diff options
| author | Andre Przywara <andre.przywara@arm.com> | 2016-05-02 11:37:48 +0100 |
|---|---|---|
| committer | Andre Przywara <andre.przywara@arm.com> | 2016-06-02 01:29:48 +0100 |
| commit | d697594a5db02f6aa1e2368a110530ea29da329d (patch) | |
| tree | 0a33cf657dc8bd581635a2c81b82839b8fb38001 /plat/sun50iw1p1 | |
| parent | 7e993f79321991eae05352f857c2ed16fa26196f (diff) | |
bl31: output memory location of running code
For debugging purposes it seems useful to output the part of memory that
ATF is running in. Get the current location of the PC and deduct the
SRAM/DRAM region we have been loaded to.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Diffstat (limited to 'plat/sun50iw1p1')
| -rw-r--r-- | plat/sun50iw1p1/bl31_sunxi_setup.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/plat/sun50iw1p1/bl31_sunxi_setup.c b/plat/sun50iw1p1/bl31_sunxi_setup.c index adb1b50..0f2eff8 100644 --- a/plat/sun50iw1p1/bl31_sunxi_setup.c +++ b/plat/sun50iw1p1/bl31_sunxi_setup.c @@ -41,6 +41,8 @@ #include "sunxi_def.h" #include "sunxi_private.h" +#include <debug.h> + /******************************************************************************* * Declarations of linker defined symbols which will help us find the layout * of trusted SRAM @@ -118,6 +120,14 @@ entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) #endif } +static unsigned long get_pc(void) +{ + unsigned long pc; + + __asm__ volatile ("adr %0, .\n" : "=r" (pc)); + return pc; +} + /******************************************************************************* * Perform any BL31 specific platform actions. Here is an opportunity to copy * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they @@ -132,8 +142,22 @@ entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) void bl31_early_platform_setup(bl31_params_t *from_bl2, void *plat_params_from_bl2) { + unsigned long load_addr; + const char *mem_name = "unknown memory region"; + /* Initialize the console to provide early debug support */ console_init(SUNXI_UART0_BASE, UART0_CLK_IN_HZ, UART0_BAUDRATE); + load_addr = get_pc() & ~0xfff; + if (load_addr >= 0x44000 && load_addr < 0x54000) { + mem_name = "SRAM A2"; + } else if (load_addr >= 0x10000 && load_addr < 0x18000) { + mem_name = "SRAM A1"; + } else if (load_addr >= 0x18000 && load_addr < 0x40000) { + mem_name = "SRAM C"; + } else if (load_addr >= 0x40000000) + mem_name = "DRAM"; + + NOTICE("BL3-1: Running in %s (@0x%lx)\n", mem_name, load_addr); #if 0 #if RESET_TO_BL31 |