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Specify BL31 runtime console for ARM Standard platforms

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This patch overrides the default weak definition of
`bl31_plat_runtime_setup()` for ARM Standard platforms to
specify a BL31 runtime console. ARM Standard platforms are
now expected to define `PLAT_ARM_BL31_RUN_UART_BASE` and
`PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ` macros which is required
by `arm_bl31_plat_runtime_setup()` to initialize the runtime
console.

The system suspend resume helper `arm_system_pwr_domain_resume()`
is fixed to initialize the runtime console rather than the boot
console on resumption from system suspend.

Fixes ARM-software/tf-issues#220

Change-Id: I80eafe5b6adcfc7f1fdf8b99659aca1c64d96975
This commit is contained in:
Soby Mathew 2015-12-09 11:38:43 +00:00
parent 78e6161373
commit 080225dacd
6 changed files with 32 additions and 5 deletions
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4
docs/porting-guide.md
View file

@ -1182,6 +1182,10 @@ setup just prior to BL31 exit during cold boot. The default weak
implementation of this function will invoke `console_uninit()` which will
suppress any BL31 runtime logs.
In ARM Standard platforms, this function will initialize the BL31 runtime
console which will cause all further BL31 logs to be output to the
runtime console.
### Function : bl31_get_next_image_info() [mandatory]

7
include/plat/arm/board/common/board_css_def.h
View file

@ -74,8 +74,11 @@
#define PLAT_ARM_BOOT_UART_BASE SOC_CSS_UART0_BASE
#define PLAT_ARM_BOOT_UART_CLK_IN_HZ SOC_CSS_UART0_CLK_IN_HZ
#define PLAT_ARM_CRASH_UART_BASE SOC_CSS_UART1_BASE
#define PLAT_ARM_CRASH_UART_CLK_IN_HZ SOC_CSS_UART1_CLK_IN_HZ
#define PLAT_ARM_BL31_RUN_UART_BASE SOC_CSS_UART1_BASE
#define PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ SOC_CSS_UART1_CLK_IN_HZ
#define PLAT_ARM_CRASH_UART_BASE PLAT_ARM_BL31_RUN_UART_BASE
#define PLAT_ARM_CRASH_UART_CLK_IN_HZ PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ
#define PLAT_ARM_TSP_UART_BASE V2M_IOFPGA_UART0_BASE
#define PLAT_ARM_TSP_UART_CLK_IN_HZ V2M_IOFPGA_UART0_CLK_IN_HZ

1
include/plat/arm/common/plat_arm.h
View file

@ -170,6 +170,7 @@ uint32_t arm_get_spsr_for_bl33_entry(void);
void arm_bl31_early_platform_setup(bl31_params_t *from_bl2,
void *plat_params_from_bl2);
void arm_bl31_platform_setup(void);
void arm_bl31_plat_runtime_setup(void);
void arm_bl31_plat_arch_setup(void);
/* TSP utility functions */

7
plat/arm/board/fvp/include/platform_def.h
View file

@ -78,8 +78,11 @@
#define PLAT_ARM_BOOT_UART_BASE V2M_IOFPGA_UART0_BASE
#define PLAT_ARM_BOOT_UART_CLK_IN_HZ V2M_IOFPGA_UART0_CLK_IN_HZ
#define PLAT_ARM_CRASH_UART_BASE V2M_IOFPGA_UART1_BASE
#define PLAT_ARM_CRASH_UART_CLK_IN_HZ V2M_IOFPGA_UART1_CLK_IN_HZ
#define PLAT_ARM_BL31_RUN_UART_BASE V2M_IOFPGA_UART1_BASE
#define PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ V2M_IOFPGA_UART1_CLK_IN_HZ
#define PLAT_ARM_CRASH_UART_BASE PLAT_ARM_BL31_RUN_UART_BASE
#define PLAT_ARM_CRASH_UART_CLK_IN_HZ PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ
#define PLAT_ARM_TSP_UART_BASE V2M_IOFPGA_UART2_BASE
#define PLAT_ARM_TSP_UART_CLK_IN_HZ V2M_IOFPGA_UART2_CLK_IN_HZ

16
plat/arm/common/arm_bl31_setup.c
View file

@ -224,11 +224,27 @@ void arm_bl31_platform_setup(void)
plat_arm_pwrc_setup();
}
/*******************************************************************************
* Perform any BL3-1 platform runtime setup prior to BL3-1 exit common to ARM
* standard platforms
******************************************************************************/
void arm_bl31_plat_runtime_setup(void)
{
/* Initialize the runtime console */
console_init(PLAT_ARM_BL31_RUN_UART_BASE, PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ,
ARM_CONSOLE_BAUDRATE);
}
void bl31_platform_setup(void)
{
arm_bl31_platform_setup();
}
void bl31_plat_runtime_setup(void)
{
arm_bl31_plat_runtime_setup();
}
/*******************************************************************************
* Perform the very early platform specific architectural setup here. At the
* moment this is only intializes the mmu in a quick and dirty way.

2
plat/arm/common/arm_pm.c
View file

@ -158,7 +158,7 @@ int arm_validate_ns_entrypoint(uintptr_t entrypoint)
*****************************************************************************/
void arm_system_pwr_domain_resume(void)
{
console_init(PLAT_ARM_BOOT_UART_BASE, PLAT_ARM_BOOT_UART_CLK_IN_HZ,
console_init(PLAT_ARM_BL31_RUN_UART_BASE, PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ,
ARM_CONSOLE_BAUDRATE);
/* Assert system power domain is available on the platform */