diff options
Diffstat (limited to 'arch/arm/cpu/start.c')
-rw-r--r-- | arch/arm/cpu/start.c | 81 |
1 files changed, 42 insertions, 39 deletions
diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c index c61db66865..0351dcb927 100644 --- a/arch/arm/cpu/start.c +++ b/arch/arm/cpu/start.c @@ -3,6 +3,10 @@ #define pr_fmt(fmt) "start.c: " fmt +#ifdef CONFIG_DEBUG_INITCALLS +#define DEBUG +#endif + #include <common.h> #include <init.h> #include <linux/sizes.h> @@ -28,6 +32,7 @@ unsigned long arm_stack_top; static unsigned long arm_barebox_size; static unsigned long arm_endmem; +static unsigned long arm_membase; static void *barebox_boarddata; static unsigned long barebox_boarddata_size; @@ -38,21 +43,24 @@ static bool blob_is_arm_boarddata(const void *blob) return bd->magic == BAREBOX_ARM_BOARDDATA_MAGIC; } +const struct barebox_boarddata *barebox_get_boarddata(void) +{ + if (!barebox_boarddata || !blob_is_arm_boarddata(barebox_boarddata)) + return NULL; + + return barebox_boarddata; +} + u32 barebox_arm_machine(void) { - if (barebox_boarddata && blob_is_arm_boarddata(barebox_boarddata)) { - const struct barebox_arm_boarddata *bd = barebox_boarddata; - return bd->machine; - } else { - return 0; - } + const struct barebox_boarddata *bd = barebox_get_boarddata(); + return bd ? bd->machine : 0; } void *barebox_arm_boot_dtb(void) { void *dtb; - void *data; - int ret; + int ret = 0; struct barebox_boarddata_compressed_dtb *compressed_dtb; static void *boot_dtb; @@ -75,10 +83,13 @@ void *barebox_arm_boot_dtb(void) if (!dtb) return NULL; - data = compressed_dtb + 1; + if (IS_ENABLED(CONFIG_IMAGE_COMPRESSION_NONE)) + memcpy(dtb, compressed_dtb->data, + compressed_dtb->datalen_uncompressed); + else + ret = uncompress(compressed_dtb->data, compressed_dtb->datalen, + NULL, NULL, dtb, NULL, NULL); - ret = uncompress(data, compressed_dtb->datalen, NULL, NULL, - dtb, NULL, NULL); if (ret) { pr_err("uncompressing dtb failed\n"); free(dtb); @@ -104,7 +115,7 @@ static inline unsigned long arm_mem_boarddata(unsigned long membase, unsigned long arm_mem_ramoops_get(void) { - return arm_mem_ramoops(0, arm_stack_top); + return arm_mem_ramoops(arm_stack_top); } EXPORT_SYMBOL_GPL(arm_mem_ramoops_get); @@ -114,17 +125,27 @@ unsigned long arm_mem_endmem_get(void) } EXPORT_SYMBOL_GPL(arm_mem_endmem_get); +unsigned long arm_mem_membase_get(void) +{ + return arm_membase; +} +EXPORT_SYMBOL_GPL(arm_mem_membase_get); + static int barebox_memory_areas_init(void) { if(barebox_boarddata) request_sdram_region("board data", (unsigned long)barebox_boarddata, barebox_boarddata_size); + if (IS_ENABLED(CONFIG_KASAN)) + request_sdram_region("kasan shadow", kasan_shadow_base, + mem_malloc_start() - kasan_shadow_base); + return 0; } device_initcall(barebox_memory_areas_init); -__noreturn __no_sanitize_address void barebox_non_pbl_start(unsigned long membase, +__noreturn __prereloc void barebox_non_pbl_start(unsigned long membase, unsigned long memsize, void *boarddata) { unsigned long endmem = membase + memsize; @@ -148,23 +169,12 @@ __noreturn __no_sanitize_address void barebox_non_pbl_start(unsigned long membas pr_debug("memory at 0x%08lx, size 0x%08lx\n", membase, memsize); + arm_membase = membase; arm_endmem = endmem; - arm_stack_top = arm_mem_stack_top(membase, endmem); + arm_stack_top = arm_mem_stack_top(endmem); arm_barebox_size = barebox_size; malloc_end = barebox_base; - if (IS_ENABLED(CONFIG_MMU_EARLY)) { - unsigned long ttb = arm_mem_ttb(membase, endmem); - - if (IS_ENABLED(CONFIG_PBL_IMAGE)) { - arm_set_cache_functions(); - } else { - pr_debug("enabling MMU, ttb @ 0x%08lx\n", ttb); - arm_early_mmu_cache_invalidate(); - mmu_early_enable(membase, memsize, ttb); - } - } - if (boarddata) { uint32_t totalsize = 0; const char *name; @@ -179,18 +189,6 @@ __noreturn __no_sanitize_address void barebox_non_pbl_start(unsigned long membas } else if (blob_is_arm_boarddata(boarddata)) { totalsize = sizeof(struct barebox_arm_boarddata); name = "machine type"; - } else if ((unsigned long)boarddata < 8192) { - struct barebox_arm_boarddata *bd; - uint32_t machine_type = (unsigned long)boarddata; - unsigned long mem = arm_mem_boarddata(membase, endmem, - sizeof(*bd)); - pr_debug("found machine type %d in boarddata\n", - machine_type); - bd = barebox_boarddata = (void *)mem; - barebox_boarddata_size = sizeof(*bd); - bd->magic = BAREBOX_ARM_BOARDDATA_MAGIC; - bd->machine = machine_type; - malloc_end = mem; } if (totalsize) { @@ -226,6 +224,11 @@ __noreturn __no_sanitize_address void barebox_non_pbl_start(unsigned long membas mem_malloc_init((void *)malloc_start, (void *)malloc_end - 1); + if (IS_ENABLED(CONFIG_MMU) && !IS_ENABLED(CONFIG_PBL_IMAGE)) { + arm_early_mmu_cache_invalidate(); + mmu_early_enable(membase, memsize); + } + if (IS_ENABLED(CONFIG_BOOTM_OPTEE)) of_add_reserve_entry(endmem - OPTEE_SIZE, endmem - 1); @@ -250,7 +253,7 @@ void start(unsigned long membase, unsigned long memsize, void *boarddata); * First function in the uncompressed image. We get here from * the pbl. The stack already has been set up by the pbl. */ -void NAKED __no_sanitize_address __section(.text_entry) start(unsigned long membase, +void NAKED __prereloc __section(.text_entry) start(unsigned long membase, unsigned long memsize, void *boarddata) { barebox_non_pbl_start(membase, memsize, boarddata); |