plat/marvell: Migrate to multi-console API

Migrate Marvell platforms from legacy console API to
multi-console API.

Change-Id: I647f5f49148b463a257a747af05b5f0c967f267c
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>

drivers/marvell/uart/a3700_console.S

@@ -5,16 +5,27 @@
  * https://spdx.org/licenses
  */
 
+#include <arch.h>
 #include <asm_macros.S>
 #include <a3700_console.h>
+#define USE_FINISH_CONSOLE_REG_2
+#include <console_macros.S>
 
-	.globl	console_core_init
-	.globl	console_core_putc
-	.globl	console_core_getc
-	.globl	console_core_flush
+	/*
+	 * "core" functions are low-level implementations that don't require
+	 * writable memory and are thus safe to call in BL1 crash context.
+	 */
+	.globl console_a3700_core_putc
+	.globl console_a3700_core_init
+	.globl console_a3700_core_getc
+	.globl console_a3700_core_flush
+
+	.globl console_a3700_putc
+	.globl console_a3700_getc
+	.globl console_a3700_flush
 
 	/* -----------------------------------------------
-	 * int console_core_init(unsigned long base_addr,
+	 * int console_a3700_core_init(unsigned long base_addr,
 	 * unsigned int uart_clk, unsigned int baud_rate)
 	 * Function to initialize the console without a
 	 * C Runtime to print debug information. This
@@ -27,7 +38,7 @@
 	 * Clobber list : x1, x2, x3
 	 * -----------------------------------------------
 	 */
-func console_core_init
+func console_a3700_core_init
 	/* Check the input base address */
 	cbz	x0, init_fail
 	/* Check baud rate and uart clock for sanity */
@@ -95,10 +106,43 @@ func console_core_init
 init_fail:
 	mov	w0, #0
 	ret
-endfunc console_core_init
+endfunc console_a3700_core_init
+
+	.globl console_a3700_register
+
+	/* -----------------------------------------------
+	 * int console_a3700_register(console_16550_t *console,
+		uintptr_t base, uint32_t clk, uint32_t baud)
+	 * Function to initialize and register a new a3700
+	 * 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_a3700_t struct
+	 * Out: return 1 on success, 0 on error
+	 * Clobber list : x0, x1, x2, x6, x7, x14
+	 * -----------------------------------------------
+	 */
+func console_a3700_register
+	mov	x7, x30
+	mov	x6, x3
+	cbz	x6, register_fail
+	str	x0, [x6, #CONSOLE_T_A3700_BASE]
+
+	bl	console_a3700_core_init
+	cbz	x0, register_fail
+
+	mov	x0, x6
+	mov	x30, x7
+	finish_console_register a3700, putc=1, getc=1, flush=1
+
+register_fail:
+	ret	x7
+endfunc console_a3700_register
 
 	/* --------------------------------------------------------
-	 * int console_core_putc(int c, unsigned int base_addr)
+	 * int console_a3700_core_putc(int c, unsigned int 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
@@ -107,7 +151,7 @@ endfunc console_core_init
 	 * Clobber list : x2
 	 * --------------------------------------------------------
 	 */
-func console_core_putc
+func console_a3700_core_putc
 	/* Check the input parameter */
 	cbz	x1, putc_error
 
@@ -132,10 +176,25 @@ func console_core_putc
 putc_error:
 	mov	w0, #-1
 	ret
-endfunc console_core_putc
+endfunc console_a3700_core_putc
+
+	/* --------------------------------------------------------
+	 * int console_a3700_putc(int c, console_a3700_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_a3700_putc
+	ldr	x1, [x1, #CONSOLE_T_A3700_BASE]
+	b	console_a3700_core_putc
+endfunc console_a3700_putc
 
 	/* ---------------------------------------------
-	 * int console_core_getc(void)
+	 * int console_a3700_core_getc(void)
 	 * Function to get a character from the console.
 	 * It returns the character grabbed on success
 	 * or -1 on error.
@@ -144,16 +203,28 @@ endfunc console_core_putc
 	 * Clobber list : x0, x1
 	 * ---------------------------------------------
 	 */
-func console_core_getc
-	/* Check if the receive FIFO is empty */
-	ret
-getc_error:
+func console_a3700_core_getc
 	mov	w0, #-1
 	ret
-endfunc console_core_getc
+endfunc console_a3700_core_getc
+
+	/* ---------------------------------------------
+	 * int console_a3700_getc(console_a3700_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_a3700_getc
+	ldr	x0, [x0, #CONSOLE_T_A3700_BASE]
+	b	console_a3700_core_getc
+endfunc console_a3700_getc
 
 	/* ---------------------------------------------
-	 * int console_core_flush(uintptr_t base_addr)
+	 * int console_a3700_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
@@ -161,8 +232,22 @@ endfunc console_core_getc
 	 * Clobber list : x0, x1
 	 * ---------------------------------------------
 	 */
-func console_core_flush
-	/* Placeholder */
+func console_a3700_core_flush
 	mov	w0, #0
 	ret
-endfunc console_core_flush
+endfunc console_a3700_core_flush
+
+	/* ---------------------------------------------
+	 * int console_a3700_flush(console_a3700_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_a3700_flush
+	ldr	x0, [x0, #CONSOLE_T_A3700_BASE]
+	b	console_a3700_core_flush
+endfunc console_a3700_flush
+

drivers/marvell/uart/a3700_console.h → include/drivers/marvell/uart/a3700_console.h

@@ -8,6 +8,8 @@
 #ifndef A3700_CONSOLE_H
 #define A3700_CONSOLE_H
 
+#include <console.h>
+
 /* MVEBU UART Registers */
 #define UART_RX_REG		0x00
 #define UART_TX_REG		0x04
@@ -52,4 +54,26 @@
 #define UART_CTRL_TXFIFO_RESET	(1 << 15)
 #define UARTLSR_TXFIFOEMPTY	(1 << 6)
 
+#define CONSOLE_T_A3700_BASE	CONSOLE_T_DRVDATA
+
+#ifndef __ASSEMBLY__
+
+#include <stdint.h>
+
+typedef struct {
+	console_t console;
+	uintptr_t base;
+} console_a3700_t;
+
+/*
+ * Initialize a new a3700 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_a3700_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud,
+			   console_a3700_t *console);
+
+#endif /*__ASSEMBLY__*/
+
 #endif	/* A3700_CONSOLE_H */

include/plat/marvell/a3700/common/plat_marvell.h

@@ -39,6 +39,12 @@ void marvell_setup_page_tables(uintptr_t total_base,
 #endif
 );
 
+/* Console utility functions */
+void marvell_console_boot_init(void);
+void marvell_console_boot_end(void);
+void marvell_console_runtime_init(void);
+void marvell_console_runtime_end(void);
+
 /* IO storage utility functions */
 void marvell_io_setup(void);
 

include/plat/marvell/a8k/common/plat_marvell.h

@@ -48,6 +48,12 @@ void marvell_setup_page_tables(uintptr_t total_base,
 #endif
 );
 
+/* Console utility functions */
+void marvell_console_boot_init(void);
+void marvell_console_boot_end(void);
+void marvell_console_runtime_init(void);
+void marvell_console_runtime_end(void);
+
 /* IO storage utility functions */
 void marvell_io_setup(void);
 

plat/marvell/a3700/common/a3700_common.mk

@@ -71,7 +71,6 @@ TIMBLDUARTARGS		:= $(MARVELL_SECURE_BOOT) UART $(IMAGESPATH) $(DOIMAGEPATH) $(CL
 				$(DDR_TOPOLOGY) 0 0 $(DOIMAGE_CFG) $(TIMNCFG) $(TIMNSIG) 0
 DOIMAGE_FLAGS		:= -r $(DOIMAGE_CFG) -v -D
 
-
 # GICV3
 $(eval $(call add_define,CONFIG_GICV3))
 
@@ -91,8 +90,8 @@ ATF_INCLUDES		:=	-Iinclude/common/tbbr		\
 PLAT_INCLUDES		:=	-I$(PLAT_FAMILY_BASE)/$(PLAT)		\
 				-I$(PLAT_COMMON_BASE)/include		\
 				-I$(PLAT_INCLUDE_BASE)/common		\
-				-I$(MARVELL_DRV_BASE)/uart		\
 				-I$(MARVELL_DRV_BASE)			\
+				-Iinclude/drivers/marvell/uart		\
 				-I$/drivers/arm/gic/common/		\
 				$(ATF_INCLUDES)
 

plat/marvell/a8k/common/a8k_common.mk

@@ -25,7 +25,6 @@ $(eval $(call add_define,BL31_CACHE_DISABLE))
 $(eval $(call add_define,PCI_EP_SUPPORT))
 $(eval $(call assert_boolean,PCI_EP_SUPPORT))
 
-
 AP_NUM			:= 1
 $(eval $(call add_define,AP_NUM))
 

plat/marvell/a8k/common/ble/ble.mk

@@ -13,7 +13,8 @@ PLAT_MARVELL		=	plat/marvell
 BLE_SOURCES		+= 	$(BLE_PATH)/ble_main.c				\
 				$(BLE_PATH)/ble_mem.S				\
 				drivers/delay_timer/delay_timer.c		\
-				$(PLAT_MARVELL)/common/plat_delay_timer.c
+				$(PLAT_MARVELL)/common/plat_delay_timer.c	\
+				$(PLAT_MARVELL)/common/marvell_console.c
 
 PLAT_INCLUDES		+= 	-I$(MV_DDR_PATH) \
 				-I$(CURDIR)/include/ \

plat/marvell/a8k/common/ble/ble_main.c

@@ -35,13 +35,11 @@ int exec_ble_main(int bootrom_flags)
 	 * initialize the console and prints will be ignored
 	 */
 	if ((bootrom_flags & BR_FLAG_SILENT) == 0)
-		console_init(PLAT_MARVELL_BOOT_UART_BASE,
-			     PLAT_MARVELL_BOOT_UART_CLK_IN_HZ,
-			     MARVELL_CONSOLE_BAUDRATE);
+		marvell_console_boot_init();
 
 	NOTICE("Starting binary extension\n");
 
-	/* initiliaze time (for delay functionality) */
+	/* initialize time (for delay functionality) */
 	plat_delay_timer_init();
 
 	ble_plat_setup(&skip);

plat/marvell/a8k/common/plat_pm.c

@@ -19,7 +19,6 @@
 #include <plat_marvell.h>
 #include <platform.h>
 #include <plat_pm_trace.h>
-#include <platform.h>
 
 #define MVEBU_PRIVATE_UID_REG		0x30
 #define MVEBU_RFU_GLOBL_SW_RST		0x84
@@ -614,6 +613,8 @@ static void a8k_pwr_domain_suspend(const psci_power_state_t *target_state)
 
 		INFO("Suspending to RAM\n");
 
+		marvell_console_runtime_end();
+
 		/* Prevent interrupts from spuriously waking up this cpu */
 		gicv2_cpuif_disable();
 
@@ -687,9 +688,7 @@ static void a8k_pwr_domain_suspend_finish(
 			/* Initialize the console to provide
 			 * early debug support
 			 */
-			console_init(PLAT_MARVELL_BOOT_UART_BASE,
-			PLAT_MARVELL_BOOT_UART_CLK_IN_HZ,
-			MARVELL_CONSOLE_BAUDRATE);
+			marvell_console_runtime_init();
 
 			bl31_plat_arch_setup();
 			marvell_bl31_platform_setup();

plat/marvell/common/aarch64/marvell_helpers.S

@@ -65,7 +65,11 @@ func plat_crash_console_init
 	mov_imm	x0, PLAT_MARVELL_CRASH_UART_BASE
 	mov_imm	x1, PLAT_MARVELL_CRASH_UART_CLK_IN_HZ
 	mov_imm	x2, MARVELL_CONSOLE_BAUDRATE
-	b	console_core_init
+#ifdef PLAT_a3700
+	b	console_a3700_core_init
+#else
+	b	console_16550_core_init
+#endif
 endfunc plat_crash_console_init
 
 	/* ---------------------------------------------
@@ -77,7 +81,12 @@ endfunc plat_crash_console_init
 	 */
 func plat_crash_console_putc
 	mov_imm	x1, PLAT_MARVELL_CRASH_UART_BASE
-	b	console_core_putc
+#ifdef PLAT_a3700
+
+	b	console_a3700_core_putc
+#else
+	b	console_16550_core_putc
+#endif
 endfunc plat_crash_console_putc
 
 	/* ---------------------------------------------
@@ -85,12 +94,16 @@ endfunc plat_crash_console_putc
 	 * Function to force a write of all buffered
 	 * data that hasn't been output.
 	 * Out : return -1 on error else return 0.
-	 * Clobber list : x0, x1
+	 * Clobber list : r0
 	 * ---------------------------------------------
 	 */
 func plat_crash_console_flush
 	mov_imm	x0, PLAT_MARVELL_CRASH_UART_BASE
-	b	console_core_flush
+#ifdef PLAT_a3700
+	b	console_a3700_core_flush
+#else
+	b	console_16550_core_flush
+#endif
 endfunc plat_crash_console_flush
 
 	/* ---------------------------------------------------------------------

plat/marvell/common/marvell_bl1_setup.c

@@ -35,9 +35,7 @@ meminfo_t *bl1_plat_sec_mem_layout(void)
 void marvell_bl1_early_platform_setup(void)
 {
 	/* Initialize the console to provide early debug support */
-	console_init(PLAT_MARVELL_BOOT_UART_BASE,
-		     PLAT_MARVELL_BOOT_UART_CLK_IN_HZ,
-		     MARVELL_CONSOLE_BAUDRATE);
+	marvell_console_boot_init();
 
 	/* Allow BL1 to see the whole Trusted RAM */
 	bl1_ram_layout.total_base = MARVELL_BL_RAM_BASE;

plat/marvell/common/marvell_bl2_setup.c

@@ -40,9 +40,7 @@ meminfo_t *bl2_plat_sec_mem_layout(void)
 void marvell_bl2_early_platform_setup(meminfo_t *mem_layout)
 {
 	/* Initialize the console to provide early debug support */
-	console_init(PLAT_MARVELL_BOOT_UART_BASE,
-		     PLAT_MARVELL_BOOT_UART_CLK_IN_HZ,
-		     MARVELL_CONSOLE_BAUDRATE);
+	marvell_console_boot_init();
 
 	/* Setup the BL2 memory layout */
 	bl2_tzram_layout = *mem_layout;

plat/marvell/common/marvell_bl31_setup.c

@@ -74,9 +74,7 @@ void marvell_bl31_early_platform_setup(void *from_bl2,
 				       void *plat_params_from_bl2)
 {
 	/* Initialize the console to provide early debug support */
-	console_init(PLAT_MARVELL_BOOT_UART_BASE,
-		     PLAT_MARVELL_BOOT_UART_CLK_IN_HZ,
-		     MARVELL_CONSOLE_BAUDRATE);
+	marvell_console_boot_init();
 
 #if RESET_TO_BL31
 	/* There are no parameters from BL2 if BL31 is a reset vector */
@@ -190,10 +188,10 @@ void marvell_bl31_platform_setup(void)
  */
 void marvell_bl31_plat_runtime_setup(void)
 {
+	console_switch_state(CONSOLE_FLAG_RUNTIME);
+
 	/* Initialize the runtime console */
-	console_init(PLAT_MARVELL_BL31_RUN_UART_BASE,
-		     PLAT_MARVELL_BL31_RUN_UART_CLK_IN_HZ,
-		     MARVELL_CONSOLE_BAUDRATE);
+	marvell_console_runtime_init();
 }
 
 void bl31_platform_setup(void)

plat/marvell/common/marvell_common.mk

@@ -11,6 +11,8 @@ include $(MARVELL_PLAT_BASE)/marvell.mk
 
 VERSION_STRING			+=(Marvell-${SUBVERSION})
 
+MULTI_CONSOLE_API		:= 1
+
 SEPARATE_CODE_AND_RODATA	:= 1
 
 # flag to switch from PLL to ARO
@@ -28,7 +30,8 @@ PLAT_INCLUDES		+=	-I. -Iinclude/common -Iinclude/common/tbbr	\
 PLAT_BL_COMMON_SOURCES  +=      lib/xlat_tables/xlat_tables_common.c			\
 				lib/xlat_tables/aarch64/xlat_tables.c			\
 				$(MARVELL_PLAT_BASE)/common/aarch64/marvell_common.c	\
-				$(MARVELL_PLAT_BASE)/common/aarch64/marvell_helpers.S
+				$(MARVELL_PLAT_BASE)/common/aarch64/marvell_helpers.S	\
+				$(MARVELL_COMMON_BASE)/marvell_console.c
 
 BL1_SOURCES		+=	drivers/delay_timer/delay_timer.c			\
 				drivers/io/io_fip.c					\

plat/marvell/common/marvell_console.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <assert.h>
+#include <console.h>
+#include <debug.h>
+#include <plat_marvell.h>
+#include <platform_def.h>
+
+#ifdef PLAT_a3700
+#include <a3700_console.h>
+
+static console_a3700_t marvell_boot_console;
+static console_a3700_t marvell_runtime_console;
+#else
+#include <uart_16550.h>
+
+static console_16550_t marvell_boot_console;
+static console_16550_t marvell_runtime_console;
+#endif
+
+/*******************************************************************************
+ * Functions that set up the console
+ ******************************************************************************/
+
+/* Initialize the console to provide early debug support */
+void marvell_console_boot_init(void)
+{
+	int rc =
+#ifdef PLAT_a3700
+	console_a3700_register(
+#else
+	console_16550_register(
+#endif
+				PLAT_MARVELL_BOOT_UART_BASE,
+				PLAT_MARVELL_BOOT_UART_CLK_IN_HZ,
+				MARVELL_CONSOLE_BAUDRATE,
+				&marvell_boot_console);
+	if (rc == 0) {
+		/*
+		 * The crash console doesn't use the multi console API, it uses
+		 * the core console functions directly. It is safe to call panic
+		 * and let it print debug information.
+		 */
+		panic();
+	}
+
+	console_set_scope(&marvell_boot_console.console,
+			  CONSOLE_FLAG_BOOT);
+}
+
+void marvell_console_boot_end(void)
+{
+	(void)console_flush();
+
+	(void)console_unregister(&marvell_boot_console.console);
+}
+
+/* Initialize the runtime console */
+void marvell_console_runtime_init(void)
+{
+	int rc =
+#ifdef PLAT_a3700
+	console_a3700_register(
+#else
+	console_16550_register(
+#endif
+				PLAT_MARVELL_BOOT_UART_BASE,
+				PLAT_MARVELL_BOOT_UART_CLK_IN_HZ,
+				MARVELL_CONSOLE_BAUDRATE,
+				&marvell_runtime_console);
+	if (rc == 0)
+		panic();
+
+	console_set_scope(&marvell_runtime_console.console,
+			  CONSOLE_FLAG_RUNTIME);
+}
+
+void marvell_console_runtime_end(void)
+{
+	(void)console_flush();
+
+	(void)console_unregister(&marvell_runtime_console.console);
+}