juno: Initialise UART console in all bootloader stages

Ensure that each bootloader stage initializes the UART console
independently. As a result, both BL3-1 and BL2 platform code now
calls console_init() instead of relying on BL1 to perform console
setup.

Also perform the console initialisation earlier in BL1 because
it must be done before it is used e.g. through a printf() call
in an assert() statement.

Change-Id: I8bb58cf1f0e42a71a01abf65da30bfa4ae533665

plat/juno/bl1_plat_setup.c

@@ -77,6 +77,9 @@ void bl1_early_platform_setup(void)
 	const unsigned long bl1_ram_limit = BL1_RAM_LIMIT;
 	const unsigned long tzram_limit = TZRAM_BASE + TZRAM_SIZE;
 
+	/* Initialize the console to provide early debug support */
+	console_init(PL011_UART0_BASE);
+
 	/*
 	 * Calculate how much ram is BL1 using & how much remains free.
 	 * This also includes a rudimentary mechanism to detect whether
@@ -98,9 +101,6 @@ void bl1_early_platform_setup(void)
 		bl1_tzram_layout.free_size =
 			tzram_limit - bl1_ram_limit;
 	}
-
-	/* Initialize the console */
-	console_init(PL011_UART0_BASE);
 }
 
 

plat/juno/bl2_plat_setup.c

@@ -37,6 +37,7 @@
 #include <bl_common.h>
 #include <scp_bootloader.h>
 #include <debug.h>
+#include <console.h>
 
 /*******************************************************************************
  * Declarations of linker defined symbols which will help us find the layout
@@ -97,6 +98,10 @@ bl31_args *bl2_get_bl31_args_ptr(void)
 void bl2_early_platform_setup(meminfo *mem_layout,
 			      void *data)
 {
+
+	/* Initialize the console to provide early debug support */
+	console_init(PL011_UART0_BASE);
+
 	/* Setup the BL2 memory layout */
 	bl2_tzram_layout.total_base = mem_layout->total_base;
 	bl2_tzram_layout.total_size = mem_layout->total_size;

plat/juno/bl31_plat_setup.c

@@ -32,6 +32,7 @@
 #include <platform.h>
 #include <assert.h>
 #include <arch_helpers.h>
+#include <console.h>
 
 /*******************************************************************************
  * Declarations of linker defined symbols which will help us find the layout
@@ -107,6 +108,9 @@ el_change_info *bl31_get_next_image_info(uint32_t type)
 void bl31_early_platform_setup(bl31_args *from_bl2,
 			       void *data)
 {
+	/* Initialize the console to provide early debug support */
+	console_init(PL011_UART0_BASE);
+
 	bl2_to_bl31_args = *from_bl2;
 
 	/* UEFI expects x0 to be primary CPU MPID */