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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2014-12-09 12:42:21 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-01-05 11:30:59 +0100 |
| commit | 577cb0cb51c083090ca89c1ce5f9cd35970ed18e (patch) | |
| tree | 7a8c0286918be0b9cf76e1779224a3f059d64f2f | |
| parent | ab989e458866f0d3efdcdbfd1d8ff8261fcf51a9 (diff) | |
| download | barebox-577cb0cb51c083090ca89c1ce5f9cd35970ed18e.tar.gz barebox-577cb0cb51c083090ca89c1ce5f9cd35970ed18e.tar.xz | |
ARM: start.c: Add some debugging messages
pr_debug can now be used right after setup_c(), so add some debug
messages to the early startup code to make it a bit more clear what
is happening there.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | arch/arm/cpu/start.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c index 264420d084..e2a6b8e90f 100644 --- a/arch/arm/cpu/start.c +++ b/arch/arm/cpu/start.c @@ -16,6 +16,7 @@ * GNU General Public License for more details. * */ +#define pr_fmt(fmt) "start.c: " fmt #include <common.h> #include <init.h> @@ -62,6 +63,8 @@ static noinline __noreturn void __start(unsigned long membase, setup_c(); + pr_debug("memory at 0x%08lx, size 0x%08lx\n", membase, memsize); + barebox_boarddata = boarddata; arm_stack_top = endmem; endmem -= STACK_SIZE; /* Stack */ @@ -74,6 +77,7 @@ static noinline __noreturn void __start(unsigned long membase, if (IS_ENABLED(CONFIG_PBL_IMAGE)) { arm_set_cache_functions(); } else { + pr_debug("enabling MMU, ttb @ 0x%08lx\n", endmem); arm_early_mmu_cache_invalidate(); mmu_early_enable(membase, memsize, endmem); } @@ -87,6 +91,8 @@ static noinline __noreturn void __start(unsigned long membase, uint32_t totalsize = get_unaligned_be32(boarddata + 4); endmem -= ALIGN(totalsize, 64); barebox_boot_dtb = (void *)endmem; + pr_debug("found DTB in boarddata, copying to 0x%p\n", + barebox_boot_dtb); memcpy(barebox_boot_dtb, boarddata, totalsize); } @@ -115,8 +121,13 @@ static noinline __noreturn void __start(unsigned long membase, malloc_start = malloc_end - SZ_1G; } + pr_debug("initializing malloc pool at 0x%08lx (size 0x%08lx)\n", + malloc_start, malloc_end - malloc_start); + mem_malloc_init((void *)malloc_start, (void *)malloc_end - 1); + pr_debug("starting barebox...\n"); + start_barebox(); } |