Merge pull request #1306 from JiafeiPan/master

layerscape: Initial ATF support for LS1043ardb

plat/layerscape/board/ls1043/tsp/tsp-ls1043.mk

+#
+# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+# TSP source files specific to FVP platform
+BL32_SOURCES		+=	plat/layerscape/board/ls1043/ls1043_topology.c		\
+				plat/layerscape/board/ls1043/tsp/ls1043_tsp_setup.c		\
+				${LS1043_GIC_SOURCES}
+
+include plat/layerscape/common/tsp/ls_tsp.mk

plat/layerscape/common/aarch64/ls_bl2_mem_params_desc.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <bl_common.h>
+#include <desc_image_load.h>
+#include <platform.h>
+#include <platform_def.h>
+#include <debug.h>
+#include <ls_def.h>
+
+/*******************************************************************************
+ * Following descriptor provides BL image/ep information that gets used
+ * by BL2 to load the images and also subset of this information is
+ * passed to next BL image. The image loading sequence is managed by
+ * populating the images in required loading order. The image execution
+ * sequence is managed by populating the `next_handoff_image_id` with
+ * the next executable image id.
+ ******************************************************************************/
+static bl_mem_params_node_t bl2_mem_params_descs[] = {
+#ifdef EL3_PAYLOAD_BASE
+	/* Fill EL3 payload related information (BL31 is EL3 payload)*/
+	{
+		.image_id = BL31_IMAGE_ID,
+
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP,
+				VERSION_2, entry_point_info_t,
+				SECURE | EXECUTABLE | EP_FIRST_EXE),
+		.ep_info.pc = EL3_PAYLOAD_BASE,
+		.ep_info.spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
+				DISABLE_ALL_EXCEPTIONS),
+
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+				VERSION_2, image_info_t,
+				IMAGE_ATTRIB_PLAT_SETUP |
+				IMAGE_ATTRIB_SKIP_LOADING),
+
+		.next_handoff_image_id = INVALID_IMAGE_ID,
+	},
+
+#else /* EL3_PAYLOAD_BASE */
+
+	/* Fill BL31 related information */
+	{
+		.image_id = BL31_IMAGE_ID,
+
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP,
+				VERSION_2, entry_point_info_t,
+				SECURE | EXECUTABLE | EP_FIRST_EXE),
+		.ep_info.pc = BL31_BASE,
+		.ep_info.spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
+				DISABLE_ALL_EXCEPTIONS),
+#if DEBUG
+		.ep_info.args.arg1 = LS_BL31_PLAT_PARAM_VAL,
+#endif
+
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+			VERSION_2, image_info_t, IMAGE_ATTRIB_PLAT_SETUP),
+		.image_info.image_base = BL31_BASE,
+		.image_info.image_max_size = (BL31_LIMIT - BL31_BASE),
+
+# ifdef BL32_BASE
+		.next_handoff_image_id = BL32_IMAGE_ID,
+# else
+		.next_handoff_image_id = BL33_IMAGE_ID,
+# endif
+	},
+# ifdef BL32_BASE
+	/* Fill BL32 related information */
+	{
+		.image_id = BL32_IMAGE_ID,
+
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP,
+			VERSION_2, entry_point_info_t, SECURE | EXECUTABLE),
+		.ep_info.pc = BL32_BASE,
+
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+				VERSION_2, image_info_t, 0),
+		.image_info.image_base = BL32_BASE,
+		.image_info.image_max_size = (BL32_LIMIT - BL32_BASE),
+
+		.next_handoff_image_id = BL33_IMAGE_ID,
+	},
+# endif /* BL32_BASE */
+
+	/* Fill BL33 related information */
+	{
+		.image_id = BL33_IMAGE_ID,
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP,
+			VERSION_2, entry_point_info_t, NON_SECURE | EXECUTABLE),
+# ifdef PRELOADED_BL33_BASE
+		.ep_info.pc = PRELOADED_BL33_BASE,
+
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+				VERSION_2, image_info_t,
+				IMAGE_ATTRIB_SKIP_LOADING),
+# else
+		.ep_info.pc = BL33_BASE,
+
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+				VERSION_2, image_info_t, 0),
+		.image_info.image_base = BL33_BASE,
+		.image_info.image_max_size = LS_NS_DRAM_SIZE,
+# endif /* PRELOADED_BL33_BASE */
+
+		.next_handoff_image_id = INVALID_IMAGE_ID,
+	}
+#endif /* EL3_PAYLOAD_BASE */
+};
+
+REGISTER_BL_IMAGE_DESCS(bl2_mem_params_descs)

plat/layerscape/common/aarch64/ls_console.S

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <console_macros.S>
+#include <assert_macros.S>
+#include "ls_16550.h"
+
+	/*
+	 * "core" functions are low-level implementations that don't require
+	 * writable memory and are thus safe to call in BL1 crash context.
+	 */
+	.globl console_ls_16550_core_init
+	.globl console_ls_16550_core_putc
+	.globl console_ls_16550_core_getc
+
+	.globl console_ls_16550_putc
+	.globl console_ls_16550_getc
+	.globl console_ls_16550_flush
+
+	/* -----------------------------------------------
+	 * int console_ls_16550_core_init(uintptr_t base_addr,
+	 * unsigned int uart_clk, unsigned int baud_rate)
+	 * Function to initialize the console without a
+	 * C Runtime to print debug information. This
+	 * function will be accessed by console_init and
+	 * crash reporting.
+	 * In: x0 - console base address
+	 *     w1 - Uart clock in Hz
+	 *     w2 - Baud rate
+	 * Out: return 1 on success, 0 on error
+	 * Clobber list : x1, x2, x3
+	 * -----------------------------------------------
+	 */
+func console_ls_16550_core_init
+	/* Check the input base address */
+	cbz	x0, init_fail
+	/* Check baud rate and uart clock for sanity */
+	cbz	w1, init_fail
+	cbz	w2, init_fail
+
+	/* Program the baudrate */
+	/* Divisor =  Uart clock / (16 * baudrate) */
+	lsl	w2, w2, #4
+	udiv	w2, w1, w2
+	and	w1, w2, #0xff		/* w1 = DLL */
+	lsr	w2, w2, #8
+	and	w2, w2, #0xff		/* w2 = DLLM */
+	ldrb	w3, [x0, #UARTLCR]
+	orr	w3, w3, #UARTLCR_DLAB
+	strb	w3, [x0, #UARTLCR]	/* enable DLL, DLLM programming */
+	strb	w1, [x0, #UARTDLL]	/* program DLL */
+	strb	w2, [x0, #UARTDLLM]	/* program DLLM */
+	mov	w2, #~UARTLCR_DLAB
+	and	w3, w3, w2
+	strb	w3, [x0, #UARTLCR]	/* disable DLL, DLLM programming */
+
+	/* 8n1 */
+	mov	w3, #3
+	strb	w3, [x0, #UARTLCR]
+	/* no interrupt */
+	mov	w3, #0
+	strb	w3, [x0, #UARTIER]
+	/* enable fifo, DMA */
+	mov	w3, #(UARTFCR_FIFOEN |UARTFCR_TXCLR | UARTFCR_RXCLR)
+	strb	w3, [x0, #UARTFCR]
+	/* DTR + RTS */
+	mov	w3, #3
+	str	w3, [x0, #UARTMCR]
+	mov	w0, #1
+	ret
+init_fail:
+	mov	w0, #0
+	ret
+endfunc console_ls_16550_core_init
+
+#if MULTI_CONSOLE_API
+	.globl console_ls_16550_register
+
+	/* -----------------------------------------------
+	 * int console_ls_16550_register(console_ls_16550_t *console,
+	 *	uintptr_t base, uint32_t clk, uint32_t baud)
+	 * Function to initialize and register a new 16550
+	 * console. Storage passed in for the console struct
+	 * *must* be persistent (i.e. not from the stack).
+	 * In: x0 - UART register base address
+	 *     w1 - UART clock in Hz
+	 *     w2 - Baud rate
+	 *     x3 - pointer to empty console_ls_16550_t struct
+	 * Out: return 1 on success, 0 on error
+	 * Clobber list : x0, x1, x2, x6, x7, x14
+	 * -----------------------------------------------
+	 */
+func console_ls_16550_register
+	mov	x7, x30
+	mov	x6, x3
+	cbz	x6, register_fail
+	str	x0, [x6, #CONSOLE_T_16550_BASE]
+
+	bl	console_ls_16550_core_init
+	cbz	x0, register_fail
+
+	mov	x0, x6
+	mov	x30, x7
+	finish_console_register ls_16550
+
+register_fail:
+	ret	x7
+endfunc console_ls_16550_register
+#else
+	.globl console_core_init
+	.globl console_core_putc
+	.globl console_core_getc
+	.globl console_core_flush
+	.equ console_core_init,console_ls_16550_core_init
+	.equ console_core_putc,console_ls_16550_core_putc
+	.equ console_core_getc,console_ls_16550_core_getc
+	.equ console_core_flush,console_ls_16550_core_flush
+#endif
+
+	/* --------------------------------------------------------
+	 * int console_ls_16550_core_putc(int c, uintptr_t base_addr)
+	 * Function to output a character over the console. It
+	 * returns the character printed on success or -1 on error.
+	 * In : w0 - character to be printed
+	 *      x1 - console base address
+	 * Out : return -1 on error else return character.
+	 * Clobber list : x2
+	 * --------------------------------------------------------
+	 */
+func console_ls_16550_core_putc
+#if ENABLE_ASSERTIONS
+	cmp	x1, #0
+	ASM_ASSERT(ne)
+#endif /* ENABLE_ASSERTIONS */
+
+	/* Prepend '\r' to '\n' */
+	cmp	w0, #0xA //'\n'
+	b.ne	2f
+	/* Check if the transmit FIFO is full */
+1:	ldrb	w2, [x1, #UARTLSR]
+	and	w2, w2, #UARTLSR_THRE        /* #(UARTLSR_TEMT | UARTLSR_THRE)*/
+	cmp	w2, #(UARTLSR_THRE)
+	b.ne	1b
+	mov	w2, #0xD		/* '\r' */
+	strb	w2, [x1, #UARTTX]
+	ldrb	w2, [x1, #UARTFCR]
+	orr	w2, w2, #UARTFCR_TXCLR
+
+	/* Check if the transmit FIFO is full */
+2:	ldrb	w2, [x1, #UARTLSR]
+	and	w2, w2, #(UARTLSR_THRE)
+	cmp	w2, #(UARTLSR_THRE)
+	b.ne	2b
+	strb	w0, [x1, #UARTTX]
+	ret
+endfunc console_ls_16550_core_putc
+
+	/* --------------------------------------------------------
+	 * int console_16550_putc(int c, console_ls_16550_t *console)
+	 * Function to output a character over the console. It
+	 * returns the character printed on success or -1 on error.
+	 * In : w0 - character to be printed
+	 *      x1 - pointer to console_t structure
+	 * Out : return -1 on error else return character.
+	 * Clobber list : x2
+	 * --------------------------------------------------------
+	 */
+func console_ls_16550_putc
+#if ENABLE_ASSERTIONS
+	cmp	x1, #0
+	ASM_ASSERT(ne)
+#endif /* ENABLE_ASSERTIONS */
+	ldr	x1, [x1, #CONSOLE_T_16550_BASE]
+	b	console_ls_16550_core_putc
+endfunc console_ls_16550_putc
+
+	/* ---------------------------------------------
+	 * int console_ls_16550_core_getc(uintptr_t base_addr)
+	 * Function to get a character from the console.
+	 * It returns the character grabbed on success
+	 * or -1 on if no character is available.
+	 * In :  x0 - console base address
+	 * Out : w0 - character if available, else -1
+	 * Clobber list : x0, x1
+	 * ---------------------------------------------
+	 */
+func console_ls_16550_core_getc
+#if ENABLE_ASSERTIONS
+	cmp	x0, #0
+	ASM_ASSERT(ne)
+#endif /* ENABLE_ASSERTIONS */
+
+	/* Check if the receive FIFO is empty */
+1:	ldrb	w1, [x0, #UARTLSR]
+	tbz	w1, #UARTLSR_RDR, 1b
+	ldrb	w0, [x0, #UARTRX]
+	ret
+no_char:
+	mov	w0, #ERROR_NO_PENDING_CHAR
+	ret
+endfunc console_ls_16550_core_getc
+
+	/* ---------------------------------------------
+	 * int console_ls_16550_getc(console_ls_16550_t *console)
+	 * Function to get a character from the console.
+	 * It returns the character grabbed on success
+	 * or -1 on if no character is available.
+	 * In :  x0 - pointer to console_t structure
+	 * Out : w0 - character if available, else -1
+	 * Clobber list : x0, x1
+	 * ---------------------------------------------
+	 */
+func console_ls_16550_getc
+#if ENABLE_ASSERTIONS
+	cmp	x1, #0
+	ASM_ASSERT(ne)
+#endif /* ENABLE_ASSERTIONS */
+	ldr	x0, [x0, #CONSOLE_T_16550_BASE]
+	b	console_ls_16550_core_getc
+endfunc console_ls_16550_getc
+
+	/* ---------------------------------------------
+	 * int console_ls_16550_core_flush(uintptr_t base_addr)
+	 * Function to force a write of all buffered
+	 * data that hasn't been output.
+	 * In : x0 - console base address
+	 * Out : return -1 on error else return 0.
+	 * Clobber list : x0, x1
+	 * ---------------------------------------------
+	 */
+func console_ls_16550_core_flush
+#if ENABLE_ASSERTIONS
+	cmp	x0, #0
+	ASM_ASSERT(ne)
+#endif /* ENABLE_ASSERTIONS */
+
+	/* Loop until the transmit FIFO is empty */
+1:	ldrb	w1, [x0, #UARTLSR]
+	and	w1, w1, #(UARTLSR_TEMT | UARTLSR_THRE)
+	cmp	w1, #(UARTLSR_TEMT | UARTLSR_THRE)
+	b.ne	1b
+
+	mov	w0, #0
+	ret
+endfunc console_ls_16550_core_flush
+
+	/* ---------------------------------------------
+	 * int console_ls_16550_flush(console_ls_16550_t *console)
+	 * Function to force a write of all buffered
+	 * data that hasn't been output.
+	 * In : x0 - pointer to console_t structure
+	 * Out : return -1 on error else return 0.
+	 * Clobber list : x0, x1
+	 * ---------------------------------------------
+	 */
+func console_ls_16550_flush
+#if ENABLE_ASSERTIONS
+	cmp	x0, #0
+	ASM_ASSERT(ne)
+#endif /* ENABLE_ASSERTIONS */
+	ldr	x0, [x0, #CONSOLE_T_16550_BASE]
+	b	console_ls_16550_core_flush
+endfunc console_ls_16550_flush

plat/layerscape/common/aarch64/ls_helpers.S

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <asm_macros.S>
+#include <console.h>
+#include <platform_def.h>
+
+	.weak	plat_my_core_pos
+	.globl	plat_crash_console_init
+	.globl	plat_crash_console_putc
+	.globl	plat_crash_console_flush
+	.weak	platform_mem_init
+	.globl	plat_ls_calc_core_pos
+
+
+	/* -----------------------------------------------------
+	 *  unsigned int plat_my_core_pos(void)
+	 *  This function uses the plat_ls_calc_core_pos()
+	 *  definition to get the index of the calling CPU.
+	 * -----------------------------------------------------
+	 */
+func plat_my_core_pos
+	mrs	x0, mpidr_el1
+	b	plat_ls_calc_core_pos
+endfunc plat_my_core_pos
+
+	/* -----------------------------------------------------
+	 *  unsigned int plat_ls_calc_core_pos(u_register_t mpidr)
+	 *  Helper function to calculate the core position.
+	 *  With this function: CorePos = (ClusterId * 4) +
+	 *  				  CoreId
+	 * -----------------------------------------------------
+	 */
+func plat_ls_calc_core_pos
+	and	x1, x0, #MPIDR_CPU_MASK
+	and	x0, x0, #MPIDR_CLUSTER_MASK
+	add	x0, x1, x0, LSR #6
+	ret
+endfunc plat_ls_calc_core_pos
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_init(void)
+	 * Function to initialize the crash console
+	 * without a C Runtime to print crash report.
+	 * Clobber list : x0 - x4
+	 * ---------------------------------------------
+	 */
+
+#if MULTI_CONSOLE_API
+	/* -----------------------------------------------------
+	 * int plat_crash_console_init(void)
+	 * Use normal console by default. Switch it to crash
+	 * mode so serial consoles become active again.
+	 * NOTE: This default implementation will only work for
+	 * crashes that occur after a normal console (marked
+	 * valid for the crash state) has been registered with
+	 * the console framework. To debug crashes that occur
+	 * earlier, the platform has to override these functions
+	 * with an implementation that initializes a console
+	 * driver with hardcoded parameters. See
+	 * docs/porting-guide.rst for more information.
+	 * -----------------------------------------------------
+	 */
+func plat_crash_console_init
+#if defined(IMAGE_BL1)
+	/*
+	 * BL1 code can possibly crash so early that the data segment is not yet
+	 * accessible. Don't risk undefined behavior by trying to run the normal
+	 * console framework. Platforms that want to debug BL1 will need to
+	 * override this with custom functions that can run from registers only.
+	 */
+	mov	x0, #0
+	ret
+#else	/* IMAGE_BL1 */
+	mov	x3, x30
+	mov	x0, #CONSOLE_FLAG_CRASH
+	bl	console_switch_state
+	mov	x0, #1
+	ret	x3
+#endif
+endfunc plat_crash_console_init
+
+	/* -----------------------------------------------------
+	 * void plat_crash_console_putc(int character)
+	 * Output through the normal console by default.
+	 * -----------------------------------------------------
+	 */
+func plat_crash_console_putc
+	b	console_putc
+endfunc plat_crash_console_putc
+
+	/* -----------------------------------------------------
+	 * void plat_crash_console_flush(void)
+	 * Flush normal console by default.
+	 * -----------------------------------------------------
+	 */
+func plat_crash_console_flush
+	b	console_flush
+endfunc plat_crash_console_flush
+
+#else	/* MULTI_CONSOLE_API */
+
+	/* -----------------------------------------------------
+	 * In the old API these are all no-op stubs that need to
+	 * be overridden by the platform to be useful.
+	 * -----------------------------------------------------
+	 */
+func plat_crash_console_init
+	mov_imm	x0, PLAT_LS1043_UART_BASE
+	mov_imm	x1, PLAT_LS1043_UART_CLOCK
+	mov_imm	x2, PLAT_LS1043_UART_BAUDRATE
+	b	console_core_init
+endfunc plat_crash_console_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_putc(int c)
+	 * Function to print a character on the crash
+	 * console without a C Runtime.
+	 * Clobber list : x1, x2
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_putc
+	mov_imm	x1, PLAT_LS1043_UART_BASE
+	b	console_core_putc
+endfunc plat_crash_console_putc
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_flush()
+	 * Function to force a write of all buffered
+	 * data that hasn't been output.
+	 * Out : return -1 on error else return 0.
+	 * Clobber list : r0 - r1
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_flush
+	mov_imm	x1, PLAT_LS1043_UART_BASE
+	b	console_core_flush
+endfunc plat_crash_console_flush
+#endif
+	/* ---------------------------------------------------------------------
+	 * We don't need to carry out any memory initialization on LS
+	 * platforms. The Secure SRAM is accessible straight away.
+	 * ---------------------------------------------------------------------
+	 */
+func platform_mem_init
+	ret
+endfunc platform_mem_init

plat/layerscape/common/include/fsl_csu.h

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __FSL_CSU_H__
+#define __FSL_CSU_H__
+
+enum csu_cslx_access {
+	CSU_NS_SUP_R = 0x08,
+	CSU_NS_SUP_W = 0x80,
+	CSU_NS_SUP_RW = 0x88,
+	CSU_NS_USER_R = 0x04,
+	CSU_NS_USER_W = 0x40,
+	CSU_NS_USER_RW = 0x44,
+	CSU_S_SUP_R = 0x02,
+	CSU_S_SUP_W = 0x20,
+	CSU_S_SUP_RW = 0x22,
+	CSU_S_USER_R = 0x01,
+	CSU_S_USER_W = 0x10,
+	CSU_S_USER_RW = 0x11,
+	CSU_ALL_RW = 0xff,
+};
+
+struct csu_ns_dev {
+	uintptr_t ind;
+	uint32_t val;
+};
+
+void enable_layerscape_ns_access(void);
+
+#endif

plat/layerscape/common/include/ls_16550.h

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __LS_16550_H__
+#define __LS_16550_H__
+
+#include <console.h>
+
+/* UART16550 Registers */
+#define UARTTX			0x0
+#define UARTRX			0x0
+#define UARTDLL			0x0
+#define UARTIER			0x1
+#define UARTDLLM		0x1
+#define UARTFCR			0x2
+#define UARTLCR			0x3
+#define UARTLSR			0x5
+#define UARTMCR                 0x4
+
+/* FIFO Control Register bits */
+#define UARTFCR_FIFOMD_16450	(0 << 6)
+#define UARTFCR_FIFOMD_16550	(1 << 6)
+#define UARTFCR_RXTRIG_1	(0 << 6)
+#define UARTFCR_RXTRIG_4	(1 << 6)
+#define UARTFCR_RXTRIG_8	(2 << 6)
+#define UARTFCR_RXTRIG_16	(3 << 6)
+#define UARTFCR_TXTRIG_1	(0 << 4)
+#define UARTFCR_TXTRIG_4	(1 << 4)
+#define UARTFCR_TXTRIG_8	(2 << 4)
+#define UARTFCR_TXTRIG_16	(3 << 4)
+#define UARTFCR_DMAEN		(1 << 3)	/* Enable DMA mode */
+#define UARTFCR_TXCLR		(1 << 2)	/* Clear contents of Tx FIFO */
+#define UARTFCR_RXCLR		(1 << 1)	/* Clear contents of Rx FIFO */
+#define UARTFCR_FIFOEN		(1 << 0)	/* Enable the Tx/Rx FIFO */
+#define UARTFCR_64FIFO          (1 << 5)
+
+/* Line Control Register bits */
+#define UARTLCR_DLAB		(1 << 7)	/* Divisor Latch Access */
+#define UARTLCR_SETB		(1 << 6)	/* Set BREAK Condition */
+#define UARTLCR_SETP		(1 << 5)	/* Set Parity to LCR[4] */
+#define UARTLCR_EVEN		(1 << 4)	/* Even Parity Format */
+#define UARTLCR_PAR		(1 << 3)	/* Parity */
+#define UARTLCR_STOP		(1 << 2)	/* Stop Bit */
+#define UARTLCR_WORDSZ_5	0		/* Word Length of 5 */
+#define UARTLCR_WORDSZ_6	1		/* Word Length of 6 */
+#define UARTLCR_WORDSZ_7	2		/* Word Length of 7 */
+#define UARTLCR_WORDSZ_8	3		/* Word Length of 8 */
+
+/* Line Status Register bits */
+#define UARTLSR_RXFIFOEMT	(1 << 9)	/* Rx Fifo Empty */
+#define UARTLSR_TXFIFOFULL	(1 << 8)	/* Tx Fifo Full */
+#define UARTLSR_RXFIFOERR	(1 << 7)	/* Rx Fifo Error */
+#define UARTLSR_TEMT		(1 << 6)	/* Tx Shift Register Empty */
+#define UARTLSR_THRE		(1 << 5)	/* Tx Holding Register Empty */
+#define UARTLSR_BRK		(1 << 4)	/* Break Condition Detected */
+#define UARTLSR_FERR		(1 << 3)	/* Framing Error */
+#define UARTLSR_PERR		(1 << 3)	/* Parity Error */
+#define UARTLSR_OVRF		(1 << 2)	/* Rx Overrun Error */
+#define UARTLSR_RDR		(1 << 2)	/* Rx Data Ready */
+
+#define CONSOLE_T_16550_BASE	CONSOLE_T_DRVDATA
+
+#ifndef __ASSEMBLY__
+
+#include <types.h>
+
+typedef struct {
+	console_t console;
+	uintptr_t base;
+} console_ls_16550_t;
+
+/*
+ * Initialize a new 16550 console instance and register it with the console
+ * framework. The |console| pointer must point to storage that will be valid
+ * for the lifetime of the console, such as a global or static local variable.
+ * Its contents will be reinitialized from scratch.
+ */
+int console_ls_16550_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud,
+			   console_ls_16550_t *console);
+
+#endif /*__ASSEMBLY__*/
+
+#endif	/* __LS_16550_H__ */

plat/layerscape/common/include/plat_ls.h

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __PLAT_LS_H__
+#define __PLAT_LS_H__
+
+#include <sys/types.h>
+#include <cpu_data.h>
+
+/* BL1 utility functions */
+void ls_bl1_platform_setup(void);
+void ls_bl1_early_platform_setup(void);
+
+/* BL2 utility functions */
+void ls_bl2_early_platform_setup(meminfo_t *mem_layout);
+uint32_t ls_get_spsr_for_bl32_entry(void);
+uint32_t ls_get_spsr_for_bl33_entry(void);
+
+/* BL3 utility functions */
+void ls_bl31_early_platform_setup(void *from_bl2,
+				void *plat_params_from_bl2);
+
+/* IO storage utility functions */
+void plat_ls_io_setup(void);
+
+
+void ls_setup_page_tables(uintptr_t total_base,
+			size_t total_size,
+			uintptr_t code_start,
+			uintptr_t code_limit,
+			uintptr_t rodata_start,
+			uintptr_t rodata_limit
+#if USE_COHERENT_MEM
+			, uintptr_t coh_start,
+			uintptr_t coh_limit
+#endif
+);
+
+/* PSCI utility functions */
+int ls_check_mpidr(u_register_t mpidr);
+
+/* Security utility functions */
+int tzc380_setup(void);
+
+/* Timer utility functions */
+uint64_t ls_get_timer(uint64_t start);
+void ls_delay_timer_init(void);
+
+/* TSP utility functions */
+void ls_tsp_early_platform_setup(void);
+
+/* Helper functions */
+unsigned int plat_ls_calc_core_pos(u_register_t mpidr);
+
+/* others */
+unsigned int plat_ls_get_cluster_core_count(u_register_t mpidr);
+
+#endif /* __PLAT_LS_H__ */

plat/layerscape/common/include/soc.h

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __LAYERSCAPE_SOC_H__
+#define __LAYERSCAPE_SOC_H__
+
+#include <stdint.h>
+
+#define SVR_WO_E		0xFFFFFE
+#define SVR_LS1043A		0x879204
+#define SVR_LS1043AE		0x879200
+
+void get_gic_offset(uint32_t *gicc_base, uint32_t *gicd_base);
+
+#endif /* __LAYERSCAPE_SOC_H__ */

plat/layerscape/common/include/tzc380.h

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __TZC380_H__
+#define __TZC380_H__
+
+struct tzc380_reg {
+	unsigned int secure;
+	unsigned int enabled;
+	unsigned int low_addr;
+	unsigned int high_addr;
+	unsigned int size;
+	unsigned int sub_mask;
+};
+
+#endif /* __TZC380_H__ */

plat/layerscape/common/ls_bl1_setup.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <debug.h>
+#include "ls_16550.h"
+#include "plat_ls.h"
+#include "../../../bl1/bl1_private.h"
+
+/* Data structure which holds the extents of the trusted SRAM for BL1*/
+static meminfo_t bl1_tzram_layout;
+
+meminfo_t *bl1_plat_sec_mem_layout(void)
+{
+	return &bl1_tzram_layout;
+}
+
+/*******************************************************************************
+ * BL1 specific platform actions shared between ARM standard platforms.
+ ******************************************************************************/
+void ls_bl1_early_platform_setup(void)
+{
+	static console_ls_16550_t console;
+
+#if !LS1043_DISABLE_TRUSTED_WDOG
+	/* TODO: Enable watchdog */
+
+#endif
+
+	/* Initialize the console to provide early debug support */
+	console_ls_16550_register(LS_TF_UART_BASE, LS_TF_UART_CLOCK,
+			       LS_TF_UART_BAUDRATE, &console);
+
+	/* Allow BL1 to see the whole Trusted RAM */
+	bl1_tzram_layout.total_base = LS_SRAM_BASE;
+	bl1_tzram_layout.total_size = LS_SRAM_SIZE;
+}
+
+/******************************************************************************
+ * Perform the very early platform specific architecture setup shared between
+ * ARM standard platforms. This only does basic initialization. Later
+ * architectural setup (bl1_arch_setup()) does not do anything platform
+ * specific.
+ *****************************************************************************/
+void ls_bl1_plat_arch_setup(void)
+{
+	ls_setup_page_tables(bl1_tzram_layout.total_base,
+			      bl1_tzram_layout.total_size,
+			      BL_CODE_BASE,
+			      BL1_CODE_END,
+			      BL1_RO_DATA_BASE,
+			      BL1_RO_DATA_END
+#if USE_COHERENT_MEM
+			      , BL_COHERENT_RAM_BASE,
+			      BL_COHERENT_RAM_END
+#endif
+			     );
+	VERBOSE("After setup the page tables\n");
+#ifdef AARCH32
+	enable_mmu_secure(0);
+#else
+	enable_mmu_el3(0);
+#endif /* AARCH32 */
+	VERBOSE("After MMU enabled\n");
+}
+
+void bl1_plat_arch_setup(void)
+{
+	ls_bl1_plat_arch_setup();
+}
+
+/*
+ * Perform the platform specific architecture setup shared between
+ * ARM standard platforms.
+ */
+void ls_bl1_platform_setup(void)
+{
+	/* Initialise the IO layer and register platform IO devices */
+	plat_ls_io_setup();
+}
+
+void bl1_plat_prepare_exit(entry_point_info_t *ep_info)
+{
+#if !LS1043_DISABLE_TRUSTED_WDOG
+	/*TODO: Disable watchdog before leaving BL1 */
+#endif
+}

plat/layerscape/common/ls_bl2_setup.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <bl_common.h>
+#include <desc_image_load.h>
+#include "ls_16550.h"
+#include "plat_ls.h"
+#include "ls_def.h"
+
+/* Data structure which holds the extents of the trusted SRAM for BL2 */
+static meminfo_t bl2_tzram_layout __aligned(CACHE_WRITEBACK_GRANULE);
+
+/*******************************************************************************
+ * BL1 has passed the extents of the trusted SRAM that should be visible to BL2
+ * in x0. This memory layout is sitting at the base of the free trusted SRAM.
+ * Copy it to a safe location before its reclaimed by later BL2 functionality.
+ ******************************************************************************/
+void ls_bl2_early_platform_setup(meminfo_t *mem_layout)
+{
+	static console_ls_16550_t console;
+
+	/* Initialize the console to provide early debug support */
+	console_ls_16550_register(LS_TF_UART_BASE, LS_TF_UART_CLOCK,
+			       LS_TF_UART_BAUDRATE, &console);
+
+	/* Setup the BL2 memory layout */
+	bl2_tzram_layout = *mem_layout;
+
+	/* Initialise the IO layer and register platform IO devices */
+	plat_ls_io_setup();
+}
+
+/*******************************************************************************
+ * Perform the very early platform specific architectural setup here. At the
+ * moment this is only initializes the mmu in a quick and dirty way.
+ ******************************************************************************/
+void ls_bl2_plat_arch_setup(void)
+{
+	ls_setup_page_tables(bl2_tzram_layout.total_base,
+			      bl2_tzram_layout.total_size,
+			      BL_CODE_BASE,
+			      BL_CODE_END,
+			      BL_RO_DATA_BASE,
+			      BL_RO_DATA_END
+#if USE_COHERENT_MEM
+			      , BL_COHERENT_RAM_BASE,
+			      BL_COHERENT_RAM_END
+#endif
+			      );
+
+#ifdef AARCH32
+	enable_mmu_secure(0);
+#else
+	enable_mmu_el1(0);
+#endif
+}
+
+void bl2_plat_arch_setup(void)
+{
+	ls_bl2_plat_arch_setup();
+}
+
+int ls_bl2_handle_post_image_load(unsigned int image_id)
+{
+	int err = 0;
+	bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id);
+
+	assert(bl_mem_params);
+
+	switch (image_id) {
+#ifdef AARCH64
+	case BL32_IMAGE_ID:
+		bl_mem_params->ep_info.spsr = ls_get_spsr_for_bl32_entry();
+		break;
+#endif
+
+	case BL33_IMAGE_ID:
+		/* BL33 expects to receive the primary CPU MPID (through r0) */
+		bl_mem_params->ep_info.args.arg0 = 0xffff & read_mpidr();
+		bl_mem_params->ep_info.spsr = ls_get_spsr_for_bl33_entry();
+		break;
+	}
+
+	return err;
+}
+
+/*******************************************************************************
+ * This function can be used by the platforms to update/use image
+ * information for given `image_id`.
+ ******************************************************************************/
+int bl2_plat_handle_post_image_load(unsigned int image_id)
+{
+	return ls_bl2_handle_post_image_load(image_id);
+}

plat/layerscape/common/ls_bl31_setup.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <console.h>
+#include <mmio.h>
+#include <gicv2.h>
+#include "ls_16550.h"
+#include "plat_ls.h"
+#include "soc.h"
+
+#define BL31_END (uintptr_t)(&__BL31_END__)
+
+/*
+ * Placeholder variables for copying the arguments that have been passed to
+ * BL31 from BL2.
+ */
+static entry_point_info_t bl32_image_ep_info;
+static entry_point_info_t bl33_image_ep_info;
+
+const unsigned int g0_interrupt_array1[] = {
+	9
+};
+
+gicv2_driver_data_t ls_gic_data = {
+	.gicd_base = GICD_BASE,
+	.gicc_base = GICC_BASE,
+	.g0_interrupt_num = ARRAY_SIZE(g0_interrupt_array1),
+	.g0_interrupt_array = g0_interrupt_array1,
+};
+
+
+/*******************************************************************************
+ * Return a pointer to the 'entry_point_info' structure of the next image for the
+ * security state specified. BL33 corresponds to the non-secure image type
+ * while BL32 corresponds to the secure image type. A NULL pointer is returned
+ * if the image does not exist.
+ ******************************************************************************/
+entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
+{
+	entry_point_info_t *next_image_info;
+
+	assert(sec_state_is_valid(type));
+	next_image_info = (type == NON_SECURE)
+			? &bl33_image_ep_info : &bl32_image_ep_info;
+
+	if (next_image_info->pc)
+		return next_image_info;
+	else
+		return NULL;
+}
+
+/*******************************************************************************
+ * Perform any BL31 early platform setup common to Layerscape platforms.
+ * Here is an opportunity to copy parameters passed by the calling EL (S-EL1
+ * in BL2 & S-EL3 in BL1) before they are lost (potentially). This needs to be
+ * done before the MMU is initialized so that the memory layout can be used
+ * while creating page tables. BL2 has flushed this information to memory, so
+ * we are guaranteed to pick up good data.
+ ******************************************************************************/
+void ls_bl31_early_platform_setup(void *from_bl2,
+				void *plat_params_from_bl2)
+{
+	static console_ls_16550_t console;
+
+	/* Initialize the console to provide early debug support */
+	console_ls_16550_register(LS_TF_UART_BASE, LS_TF_UART_CLOCK,
+				LS_TF_UART_BAUDRATE, &console);
+#if RESET_TO_BL31
+	/* There are no parameters from BL2 if BL31 is a reset vector */
+	assert(from_bl2 == NULL);
+	assert(plat_params_from_bl2 == NULL);
+
+#ifdef BL32_BASE
+	/* Populate entry point information for BL32 */
+	SET_PARAM_HEAD(&bl32_image_ep_info,
+				PARAM_EP,
+				VERSION_1,
+				0);
+	SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
+	bl32_image_ep_info.pc = BL32_BASE;
+	bl32_image_ep_info.spsr = ls_get_spsr_for_bl32_entry();
+#endif /* BL32_BASE */
+
+	/* Populate entry point information for BL33 */
+	SET_PARAM_HEAD(&bl33_image_ep_info,
+				PARAM_EP,
+				VERSION_1,
+				0);
+	/*
+	 * Tell BL31 where the non-trusted software image
+	 * is located and the entry state information
+	 */
+	bl33_image_ep_info.pc = plat_get_ns_image_entrypoint();
+
+	bl33_image_ep_info.spsr = ls_get_spsr_for_bl33_entry();
+	SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
+
+#else /* RESET_TO_BL31 */
+
+	/*
+	 * In debug builds, we pass a special value in 'plat_params_from_bl2'
+	 * to verify platform parameters from BL2 to BL31.
+	 * In release builds, it's not used.
+	 */
+	assert(((unsigned long long)plat_params_from_bl2) ==
+		LS_BL31_PLAT_PARAM_VAL);
+
+	/*
+	 * Check params passed from BL2 should not be NULL,
+	 */
+	bl_params_t *params_from_bl2 = (bl_params_t *)from_bl2;
+
+	assert(params_from_bl2 != NULL);
+	assert(params_from_bl2->h.type == PARAM_BL_PARAMS);
+	assert(params_from_bl2->h.version >= VERSION_2);
+
+	bl_params_node_t *bl_params = params_from_bl2->head;
+
+	/*
+	 * Copy BL33 and BL32 (if present), entry point information.
+	 * They are stored in Secure RAM, in BL2's address space.
+	 */
+	while (bl_params) {
+		if (bl_params->image_id == BL32_IMAGE_ID)
+			bl32_image_ep_info = *bl_params->ep_info;
+
+		if (bl_params->image_id == BL33_IMAGE_ID)
+			bl33_image_ep_info = *bl_params->ep_info;
+
+		bl_params = bl_params->next_params_info;
+	}
+
+	if (bl33_image_ep_info.pc == 0)
+		panic();
+
+#endif /* RESET_TO_BL31 */
+}
+
+/*******************************************************************************
+ * Perform any BL31 platform setup common to Layerscape platforms
+ ******************************************************************************/
+void ls_bl31_platform_setup(void)
+{
+	uint32_t gicc_base, gicd_base;
+
+	NOTICE(FIRMWARE_WELCOME_STR_LS1043_BL31);
+	/* Initialize the GIC driver, cpu and distributor interfaces */
+	get_gic_offset(&gicc_base, &gicd_base);
+	ls_gic_data.gicd_base = (uintptr_t)gicd_base;
+	ls_gic_data.gicc_base = (uintptr_t)gicc_base;
+	gicv2_driver_init(&ls_gic_data);
+	gicv2_distif_init();
+	gicv2_pcpu_distif_init();
+	gicv2_cpuif_enable();
+
+#if RESET_TO_BL31
+	/*
+	 * Do initial security configuration to allow DRAM/device access
+	 * (if earlier BL has not already done so).
+	 */
+	plat_ls_security_setup();
+
+#endif /* RESET_TO_BL31 */
+
+	/* Enable and initialize the System level generic timer */
+	mmio_write_32(LS1043_SYS_CNTCTL_BASE + CNTCR_OFF,
+			CNTCR_FCREQ(0) | CNTCR_EN);
+
+	VERBOSE("Leave arm_bl31_platform_setup\n");
+}
+
+/*******************************************************************************
+ * Perform any BL31 platform runtime setup prior to BL31 exit common to Layerscape
+ * platforms
+ ******************************************************************************/
+void ls_bl31_plat_runtime_setup(void)
+{
+	static console_ls_16550_t console;
+
+	/* Initialize the runtime console */
+	console_ls_16550_register(PLAT_LS1043_UART_BASE, PLAT_LS1043_UART_CLOCK,
+				PLAT_LS1043_UART_BAUDRATE, &console);
+}
+
+void bl31_platform_setup(void)
+{
+	ls_bl31_platform_setup();
+}
+
+void bl31_plat_runtime_setup(void)
+{
+	ls_bl31_plat_runtime_setup();
+}
+
+/*******************************************************************************
+ * Perform the very early platform specific architectural setup shared between
+ * Layerscape platforms. This only does basic initialization. Later
+ * architectural setup (bl31_arch_setup()) does not do anything platform
+ * specific.
+ ******************************************************************************/
+void ls_bl31_plat_arch_setup(void)
+{
+	ls_setup_page_tables(BL31_BASE,
+			      BL31_END - BL31_BASE,
+			      BL_CODE_BASE,
+			      BL_CODE_END,
+			      BL_RO_DATA_BASE,
+			      BL_RO_DATA_END
+#if USE_COHERENT_MEM
+			      , BL_COHERENT_RAM_BASE,
+			      BL_COHERENT_RAM_END
+#endif
+			      );
+	enable_mmu_el3(0);
+}
+
+void bl31_plat_arch_setup(void)
+{
+	ls_bl31_plat_arch_setup();
+}

plat/layerscape/common/ls_common.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <arch.h>
+#include <arch_helpers.h>
+#include <xlat_tables_v2.h>
+#include <assert.h>
+#include <debug.h>
+#include <mmio.h>
+#include "platform_def.h"
+
+const mmap_region_t *plat_ls_get_mmap(void);
+
+/*
+ * Table of memory regions for various BL stages to map using the MMU.
+ * This doesn't include Trusted SRAM as ls_setup_page_tables() already
+ * takes care of mapping it.
+ *
+ * The flash needs to be mapped as writable in order to erase the FIP's Table of
+ * Contents in case of unrecoverable error (see plat_error_handler()).
+ */
+#ifdef IMAGE_BL1
+const mmap_region_t plat_ls_mmap[] = {
+	LS_MAP_FLASH0_RW,
+	LS_MAP_NS_DRAM,
+	LS_MAP_CCSR,
+	{0}
+};
+#endif
+#ifdef IMAGE_BL2
+const mmap_region_t plat_ls_mmap[] = {
+	LS_MAP_FLASH0_RW,
+	LS_MAP_CCSR,
+	LS_MAP_NS_DRAM,
+	LS_MAP_TSP_SEC_MEM,
+	{0}
+};
+#endif
+#ifdef IMAGE_BL31
+const mmap_region_t plat_ls_mmap[] = {
+	LS_MAP_CCSR,
+	LS_MAP_FLASH0_RW,
+	LS_MAP_NS_DRAM,
+	LS_MAP_TSP_SEC_MEM,
+	{0}
+};
+#endif
+#ifdef IMAGE_BL32
+const mmap_region_t plat_ls_mmap[] = {
+	LS_MAP_CCSR,
+	LS_MAP_FLASH0_RW,
+	LS_MAP_TSP_SEC_MEM,
+	{0}
+};
+#endif
+/*
+ * Set up the page tables for the generic and platform-specific memory regions.
+ * The extents of the generic memory regions are specified by the function
+ * arguments and consist of:
+ * - Trusted SRAM seen by the BL image;
+ * - Code section;
+ * - Read-only data section;
+ * - Coherent memory region, if applicable.
+ */
+void ls_setup_page_tables(uintptr_t total_base,
+			   size_t total_size,
+			   uintptr_t code_start,
+			   uintptr_t code_limit,
+			   uintptr_t rodata_start,
+			   uintptr_t rodata_limit
+#if USE_COHERENT_MEM
+			   ,
+			   uintptr_t coh_start,
+			   uintptr_t coh_limit
+#endif
+			   )
+{
+	/* Now (re-)map the platform-specific memory regions */
+	mmap_add(plat_ls_get_mmap());
+	/*
+	 * Map the Trusted SRAM with appropriate memory attributes.
+	 * Subsequent mappings will adjust the attributes for specific regions.
+	 */
+	VERBOSE("Trusted SRAM seen by this BL image: %p - %p\n",
+		(void *) total_base, (void *) (total_base + total_size));
+	mmap_add_region(total_base, total_base,
+			total_size,
+			MT_MEMORY | MT_RW | MT_SECURE);
+
+	/* Re-map the code section */
+	VERBOSE("Code region: %p - %p\n",
+		(void *) code_start, (void *) code_limit);
+	mmap_add_region(code_start, code_start,
+			code_limit - code_start,
+			MT_CODE | MT_SECURE);
+
+	/* Re-map the read-only data section */
+	VERBOSE("Read-only data region: %p - %p\n",
+		(void *) rodata_start, (void *) rodata_limit);
+	mmap_add_region(rodata_start, rodata_start,
+			rodata_limit - rodata_start,
+			MT_RO_DATA | MT_SECURE);
+
+#if USE_COHERENT_MEM
+	/* Re-map the coherent memory region */
+	VERBOSE("Coherent region: %p - %p\n",
+		(void *) coh_start, (void *) coh_limit);
+	mmap_add_region(coh_start, coh_start,
+			coh_limit - coh_start,
+			MT_DEVICE | MT_RW | MT_SECURE);
+#endif
+
+	/* Create the page tables to reflect the above mappings */
+	init_xlat_tables();
+}
+
+uintptr_t plat_get_ns_image_entrypoint(void)
+{
+#ifdef PRELOADED_BL33_BASE
+	return PRELOADED_BL33_BASE;
+#else
+	return LS_NS_DRAM_BASE;
+#endif
+}
+
+/*******************************************************************************
+ * Gets SPSR for BL32 entry
+ ******************************************************************************/
+uint32_t ls_get_spsr_for_bl32_entry(void)
+{
+	/*
+	 * The Secure Payload Dispatcher service is responsible for
+	 * setting the SPSR prior to entry into the BL32 image.
+	 */
+	return 0;
+}
+
+/*******************************************************************************
+ * Gets SPSR for BL33 entry
+ ******************************************************************************/
+#ifndef AARCH32
+uint32_t ls_get_spsr_for_bl33_entry(void)
+{
+	unsigned int mode;
+	uint32_t spsr;
+
+	/* Figure out what mode we enter the non-secure world in */
+	mode = EL_IMPLEMENTED(2) ? MODE_EL2 : MODE_EL1;
+
+	/*
+	 * TODO: Consider the possibility of specifying the SPSR in
+	 * the FIP ToC and allowing the platform to have a say as
+	 * well.
+	 */
+	spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
+	return spsr;
+}
+#else
+/*******************************************************************************
+ * Gets SPSR for BL33 entry
+ ******************************************************************************/
+uint32_t ls_get_spsr_for_bl33_entry(void)
+{
+	unsigned int hyp_status, mode, spsr;
+
+	hyp_status = GET_VIRT_EXT(read_id_pfr1());
+
+	mode = (hyp_status) ? MODE32_hyp : MODE32_svc;
+
+	/*
+	 * TODO: Consider the possibility of specifying the SPSR in
+	 * the FIP ToC and allowing the platform to have a say as
+	 * well.
+	 */
+	spsr = SPSR_MODE32(mode, plat_get_ns_image_entrypoint() & 0x1,
+			SPSR_E_LITTLE, DISABLE_ALL_EXCEPTIONS);
+	return spsr;
+}
+#endif /* AARCH32 */
+
+/*******************************************************************************
+ * Returns Layerscape platform specific memory map regions.
+ ******************************************************************************/
+const mmap_region_t *plat_ls_get_mmap(void)
+{
+	return plat_ls_mmap;
+}
+
+
+unsigned int plat_get_syscnt_freq2(void)
+{
+	unsigned int counter_base_frequency;
+
+	counter_base_frequency = COUNTER_FREQUENCY;
+
+	return counter_base_frequency;
+}

plat/layerscape/common/ls_common.mk

+#
+# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+
+# Process LS1043_DISABLE_TRUSTED_WDOG flag
+# TODO:Temparally disabled it on development phase, not implemented yet
+LS1043_DISABLE_TRUSTED_WDOG	:=	1
+
+# On Layerscape platforms, separate the code and read-only data sections to allow
+# mapping the former as executable and the latter as execute-never.
+SEPARATE_CODE_AND_RODATA	:=	1
+
+# Enable new version of image loading on Layerscape platforms
+LOAD_IMAGE_V2			:=	1
+
+# Use generic OID definition (tbbr_oid.h)
+USE_TBBR_DEFS			:=	1
+
+
+COLD_BOOT_SINGLE_CPU		:=	1
+
+PLAT_INCLUDES		+=	-Iinclude/common/tbbr
+
+PLAT_BL_COMMON_SOURCES	+=	plat/layerscape/common/${ARCH}/ls_helpers.S		\
+				plat/layerscape/common/ls_common.c
+
+include lib/xlat_tables_v2/xlat_tables.mk
+
+PLAT_BL_COMMON_SOURCES	+=	${XLAT_TABLES_LIB_SRCS}
+
+BL1_SOURCES		+=			\
+				drivers/io/io_fip.c				\
+				drivers/io/io_memmap.c				\
+				drivers/io/io_storage.c				\
+				plat/layerscape/common/ls_timer.c			\
+				plat/layerscape/common/ls_bl1_setup.c			\
+				plat/layerscape/common/ls_io_storage.c
+
+BL2_SOURCES		+=	drivers/io/io_fip.c				\
+				drivers/io/io_memmap.c				\
+				drivers/io/io_storage.c				\
+				plat/layerscape/common/ls_timer.c			\
+				plat/layerscape/common/ls_bl2_setup.c			\
+				plat/layerscape/common/ls_io_storage.c
+BL2_SOURCES		+=	plat/layerscape/common/${ARCH}/ls_bl2_mem_params_desc.c
+BL2_SOURCES		+=	plat/layerscape/common/ls_image_load.c		\
+					common/desc_image_load.c
+
+BL31_SOURCES		+=	plat/layerscape/common/ls_bl31_setup.c		\
+				plat/layerscape/common/ls_timer.c			\
+				plat/layerscape/common/ls_topology.c			\
+				plat/layerscape/common/ns_access.c		\
+				plat/common/plat_psci_common.c
+# Verify build config
+# -------------------
+
+ifneq (${LOAD_IMAGE_V2}, 1)
+  $(error Error: Layerscape needs LOAD_IMAGE_V2=1)
+endif

plat/layerscape/common/ls_image_load.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <desc_image_load.h>
+#include "ls_def.h"
+
+/*******************************************************************************
+ * This function flushes the data structures so that they are visible
+ * in memory for the next BL image.
+ ******************************************************************************/
+void plat_flush_next_bl_params(void)
+{
+	flush_bl_params_desc();
+}
+
+/*******************************************************************************
+ * This function returns the list of loadable images.
+ ******************************************************************************/
+bl_load_info_t *plat_get_bl_image_load_info(void)
+{
+	return get_bl_load_info_from_mem_params_desc();
+}
+
+/*******************************************************************************
+ * This function returns the list of executable images.
+ ******************************************************************************/
+bl_params_t *plat_get_next_bl_params(void)
+{
+	return get_next_bl_params_from_mem_params_desc();
+}

plat/layerscape/common/ls_io_storage.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <assert.h>
+#include <debug.h>
+#include <firmware_image_package.h>
+#include <io_driver.h>
+#include <io_fip.h>
+#include <io_memmap.h>
+#include <io_storage.h>
+#include "platform_def.h"
+
+/* IO devices */
+static const io_dev_connector_t *fip_dev_con;
+static uintptr_t fip_dev_handle;
+static const io_dev_connector_t *memmap_dev_con;
+static uintptr_t memmap_dev_handle;
+
+static const io_block_spec_t fip_block_spec = {
+	.offset = PLAT_LS_FIP_BASE,
+	.length = PLAT_LS_FIP_MAX_SIZE
+};
+
+static const io_uuid_spec_t bl2_uuid_spec = {
+	.uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2,
+};
+
+static const io_uuid_spec_t bl31_uuid_spec = {
+	.uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31,
+};
+
+static const io_uuid_spec_t bl32_uuid_spec = {
+	.uuid = UUID_SECURE_PAYLOAD_BL32,
+};
+
+static const io_uuid_spec_t bl33_uuid_spec = {
+	.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
+};
+
+static int open_fip(const uintptr_t spec);
+static int open_memmap(const uintptr_t spec);
+
+struct plat_io_policy {
+	uintptr_t *dev_handle;
+	uintptr_t image_spec;
+	int (*check)(const uintptr_t spec);
+};
+
+static const struct plat_io_policy policies[] = {
+	[FIP_IMAGE_ID] = {
+		&memmap_dev_handle,
+		(uintptr_t)&fip_block_spec,
+		open_memmap
+	},
+	[BL2_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl2_uuid_spec,
+		open_fip
+	},
+	[BL31_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl31_uuid_spec,
+		open_fip
+	},
+	[BL32_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl32_uuid_spec,
+		open_fip
+	},
+	[BL33_IMAGE_ID] = {
+		&fip_dev_handle,
+		(uintptr_t)&bl33_uuid_spec,
+		open_fip
+	},
+};
+
+static int open_fip(const uintptr_t spec)
+{
+	int result;
+	uintptr_t local_image_handle;
+
+	/* See if a Firmware Image Package is available */
+	result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID);
+	if (result == 0) {
+		result = io_open(fip_dev_handle, spec, &local_image_handle);
+		if (result == 0) {
+			VERBOSE("Using FIP\n");
+			io_close(local_image_handle);
+		}
+	}
+	return result;
+}
+
+
+static int open_memmap(const uintptr_t spec)
+{
+	int result;
+	uintptr_t local_image_handle;
+
+	result = io_dev_init(memmap_dev_handle, (uintptr_t)NULL);
+	if (result == 0) {
+		result = io_open(memmap_dev_handle, spec, &local_image_handle);
+		if (result == 0) {
+			VERBOSE("Using Memmap\n");
+			io_close(local_image_handle);
+		}
+	}
+	return result;
+}
+
+
+void ls_io_setup(void)
+{
+	int io_result;
+
+	io_result = register_io_dev_fip(&fip_dev_con);
+	assert(io_result == 0);
+
+	io_result = register_io_dev_memmap(&memmap_dev_con);
+	assert(io_result == 0);
+
+	/* Open connections to devices and cache the handles */
+	io_result = io_dev_open(fip_dev_con, (uintptr_t)NULL,
+				&fip_dev_handle);
+	assert(io_result == 0);
+
+	io_result = io_dev_open(memmap_dev_con, (uintptr_t)NULL,
+				&memmap_dev_handle);
+	assert(io_result == 0);
+
+	/* Ignore improbable errors in release builds */
+	(void)io_result;
+}
+
+void plat_ls_io_setup(void)
+{
+	ls_io_setup();
+}
+
+int plat_ls_get_alt_image_source(
+	unsigned int image_id __unused,
+	uintptr_t *dev_handle __unused,
+	uintptr_t *image_spec __unused)
+{
+	/* By default do not try an alternative */
+	return -ENOENT;
+}
+
+/*
+ * Return an IO device handle and specification which can be used to access
+ * an image. Use this to enforce platform load policy.
+ */
+int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle,
+			  uintptr_t *image_spec)
+{
+	int result;
+	const struct plat_io_policy *policy;
+
+	assert(image_id < ARRAY_SIZE(policies));
+
+	policy = &policies[image_id];
+	result = policy->check(policy->image_spec);
+	if (result == 0) {
+		*image_spec = policy->image_spec;
+		*dev_handle = *(policy->dev_handle);
+	} else {
+		VERBOSE("Trying alternative IO\n");
+		result = plat_ls_get_alt_image_source(image_id, dev_handle,
+						       image_spec);
+	}
+
+	return result;
+}

plat/layerscape/common/ls_timer.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <mmio.h>
+#include <delay_timer.h>
+#include <arch_helpers.h>
+
+#define TIMER_BASE_ADDR 0x02B00000
+
+uint64_t ls_get_timer(uint64_t start)
+{
+	return read_cntpct_el0() * 1000 / read_cntfrq_el0() - start;
+}
+
+static uint32_t ls_timeus_get_value(void)
+{
+	/*
+	 * Generic delay timer implementation expects the timer to be a down
+	 * counter. We apply bitwise NOT operator to the tick values returned
+	 * by read_cntpct_el0() to simulate the down counter. The value is
+	 * clipped from 64 to 32 bits.
+	 */
+	return (uint32_t)(~read_cntpct_el0());
+}
+
+static const timer_ops_t ls_timer_ops = {
+	.get_timer_value	= ls_timeus_get_value,
+	.clk_mult		= 1,
+	.clk_div		= 25,
+};
+
+
+/*
+ * Initialise the nxp layerscape on-chip free rolling us counter as the delay
+ * timer.
+ */
+void ls_delay_timer_init(void)
+{
+	uintptr_t cntcr =  TIMER_BASE_ADDR;
+
+	mmio_write_32(cntcr, 0x1);
+
+	timer_init(&ls_timer_ops);
+}

plat/layerscape/common/ls_topology.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "plat_ls.h"
+
+/*******************************************************************************
+ * This function validates an MPIDR by checking whether it falls within the
+ * acceptable bounds. An error code (-1) is returned if an incorrect mpidr
+ * is passed.
+ ******************************************************************************/
+int ls_check_mpidr(u_register_t mpidr)
+{
+	unsigned int cluster_id, cpu_id;
+	uint64_t valid_mask;
+
+	valid_mask = ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK);
+	cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
+	cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
+
+	mpidr &= MPIDR_AFFINITY_MASK;
+	if (mpidr & valid_mask)
+		return -1;
+
+	if (cluster_id >= PLAT_LS_CLUSTER_COUNT)
+		return -1;
+
+	/*
+	 * Validate cpu_id by checking whether it represents a CPU in
+	 * one of the two clusters present on the platform.
+	 */
+	if (cpu_id >= plat_ls_get_cluster_core_count(mpidr))
+		return -1;
+
+
+	return 0;
+}

plat/layerscape/common/ls_tzc380.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <debug.h>
+#include <mmio.h>
+#include <endian.h>
+#include "platform_def.h"
+#include "soc_tzasc.h"
+
+int tzc380_set_region(unsigned int tzasc_base, unsigned int region_id,
+		unsigned int enabled, unsigned int low_addr,
+		unsigned int high_addr, unsigned int size,
+		unsigned int security, unsigned int subreg_disable_mask)
+{
+	unsigned int reg;
+	unsigned int reg_base;
+	unsigned int attr_value;
+
+	reg_base = (tzasc_base + TZASC_REGIONS_REG + (region_id << 4));
+
+	if (region_id == 0) {
+		reg = (reg_base + TZASC_REGION_ATTR_OFFSET);
+		mmio_write_32((uintptr_t)reg, ((security & 0xF) << 28));
+	} else {
+		reg = reg_base + TZASC_REGION_LOWADDR_OFFSET;
+		mmio_write_32((uintptr_t)reg,
+				(low_addr & TZASC_REGION_LOWADDR_MASK));
+
+		reg = reg_base + TZASC_REGION_HIGHADDR_OFFSET;
+		mmio_write_32((uintptr_t)reg, high_addr);
+
+		reg = reg_base + TZASC_REGION_ATTR_OFFSET;
+		attr_value = ((security & 0xF) << 28) |
+			((subreg_disable_mask & 0xFF) << 8) |
+			((size & 0x3F) << 1) | (enabled & 0x1);
+		mmio_write_32((uintptr_t)reg, attr_value);
+
+	}
+	return 0;
+}
+
+int tzc380_setup(void)
+{
+	int reg_id = 0;
+
+	INFO("Configuring TZASC-380\n");
+
+	/*
+	 * Configure CCI control override register to terminate all barrier
+	 * transactions
+	 */
+	mmio_write_32(PLAT_LS1043_CCI_BASE, CCI_TERMINATE_BARRIER_TX);
+
+	/* Configure CSU secure access register to disable TZASC bypass mux */
+	mmio_write_32((uintptr_t)(CONFIG_SYS_FSL_CSU_ADDR +
+				CSU_SEC_ACCESS_REG_OFFSET),
+			bswap32(TZASC_BYPASS_MUX_DISABLE));
+
+	for (reg_id = 0; reg_id < MAX_NUM_TZC_REGION; reg_id++) {
+		tzc380_set_region(CONFIG_SYS_FSL_TZASC_ADDR,
+				reg_id,
+				tzc380_reg_list[reg_id].enabled,
+				tzc380_reg_list[reg_id].low_addr,
+				tzc380_reg_list[reg_id].high_addr,
+				tzc380_reg_list[reg_id].size,
+				tzc380_reg_list[reg_id].secure,
+				tzc380_reg_list[reg_id].sub_mask);
+	}
+
+	return 0;
+}

plat/layerscape/common/ns_access.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <mmio.h>
+#include <endian.h>
+#include <debug.h>
+#include "ns_access.h"
+#include "platform_def.h"
+
+static void enable_devices_ns_access(struct csu_ns_dev *ns_dev, uint32_t num)
+{
+	uint32_t *base = (uint32_t *)CONFIG_SYS_FSL_CSU_ADDR;
+	uint32_t *reg;
+	uint32_t val;
+	int i;
+
+	for (i = 0; i < num; i++) {
+		reg = base + ns_dev[i].ind / 2;
+		val = be32toh(mmio_read_32((uintptr_t)reg));
+		if (ns_dev[i].ind % 2 == 0) {
+			val &= 0x0000ffff;
+			val |= ns_dev[i].val << 16;
+		} else {
+			val &= 0xffff0000;
+			val |= ns_dev[i].val;
+		}
+		mmio_write_32((uintptr_t)reg, htobe32(val));
+	}
+}
+
+void enable_layerscape_ns_access(void)
+{
+	enable_devices_ns_access(ns_dev, ARRAY_SIZE(ns_dev));
+}