__noreturn void barebox_single_pbl_start(unsigned long membase, unsigned long memsize, void *boarddata) { uint32_t offset; uint32_t pg_start, pg_end, pg_len; void __noreturn (*barebox)(unsigned long, unsigned long, void *); uint32_t endmem = membase + memsize; unsigned long barebox_base; endmem -= STACK_SIZE; /* stack */ if (IS_ENABLED(CONFIG_PBL_RELOCATABLE)) relocate_to_current_adr(); /* Get offset between linked address and runtime address */ offset = get_runtime_offset(); pg_start = (uint32_t)&input_data - offset; pg_end = (uint32_t)&input_data_end - offset; pg_len = pg_end - pg_start; if (IS_ENABLED(CONFIG_RELOCATABLE)) barebox_base = arm_barebox_image_place(membase + memsize); else barebox_base = TEXT_BASE; if (offset && (IS_ENABLED(CONFIG_PBL_FORCE_PIGGYDATA_COPY) || region_overlap(pg_start, pg_len, barebox_base, pg_len * 4))) { /* * copy piggydata binary to its link address */ memcpy(&input_data, (void *)pg_start, pg_len); pg_start = (uint32_t)&input_data; } setup_c(); if (IS_ENABLED(CONFIG_MMU_EARLY)) { endmem &= ~0x3fff; endmem -= SZ_16K; /* ttb */ mmu_early_enable(membase, memsize, endmem); } endmem -= SZ_128K; /* early malloc */ free_mem_ptr = endmem; free_mem_end_ptr = free_mem_ptr + SZ_128K; pbl_barebox_uncompress((void*)barebox_base, (void *)pg_start, pg_len); arm_early_mmu_cache_flush(); flush_icache(); if (IS_ENABLED(CONFIG_THUMB2_BAREBOX)) barebox = (void *)(barebox_base + 1); else barebox = (void *)barebox_base; barebox(membase, memsize, boarddata); }
static void noinline uncompress(uint32_t membase, uint32_t memsize, uint32_t boarddata) { uint32_t offset; uint32_t pg_len; void __noreturn (*barebox)(uint32_t, uint32_t, uint32_t); uint32_t endmem = membase + memsize; unsigned long barebox_base; uint32_t *ptr; void *pg_start; arm_early_mmu_cache_invalidate(); endmem -= STACK_SIZE; /* stack */ if (IS_ENABLED(CONFIG_PBL_RELOCATABLE)) relocate_to_current_adr(); /* Get offset between linked address and runtime address */ offset = get_runtime_offset(); if (IS_ENABLED(CONFIG_RELOCATABLE)) barebox_base = arm_barebox_image_place(membase + memsize); else barebox_base = TEXT_BASE; setup_c(); if (IS_ENABLED(CONFIG_MMU_EARLY)) { endmem &= ~0x3fff; endmem -= SZ_16K; /* ttb */ mmu_early_enable(membase, memsize, endmem); } endmem -= SZ_128K; /* early malloc */ free_mem_ptr = endmem; free_mem_end_ptr = free_mem_ptr + SZ_128K; ptr = (void *)__image_end; pg_start = ptr + 1; pg_len = *(ptr); pbl_barebox_uncompress((void*)barebox_base, pg_start, pg_len); arm_early_mmu_cache_flush(); flush_icache(); if (IS_ENABLED(CONFIG_THUMB2_BAREBOX)) barebox = (void *)(barebox_base + 1); else barebox = (void *)barebox_base; barebox(membase, memsize, boarddata); }
void __noreturn barebox_multi_pbl_start(unsigned long membase, unsigned long memsize, void *boarddata) { uint32_t pg_len; void __noreturn (*barebox)(unsigned long, unsigned long, void *); uint32_t endmem = membase + memsize; unsigned long barebox_base; uint32_t *image_end; void *pg_start; unsigned long pc = get_pc(); image_end = (void *)ld_var(__image_end) - get_runtime_offset(); if (IS_ENABLED(CONFIG_PBL_RELOCATABLE)) { /* * If we run from inside the memory just relocate the binary * to the current address. Otherwise it may be a readonly location. * Copy and relocate to the start of the memory in this case. */ if (pc > membase && pc - membase < memsize) relocate_to_current_adr(); else relocate_to_adr(membase); } /* * image_end is the first location after the executable. It contains * the size of the appended compressed binary followed by the binary. */ pg_start = image_end + 1; pg_len = *(image_end); if (IS_ENABLED(CONFIG_RELOCATABLE)) barebox_base = arm_mem_barebox_image(membase, endmem, pg_len); else barebox_base = TEXT_BASE; setup_c(); pr_debug("memory at 0x%08lx, size 0x%08lx\n", membase, memsize); if (IS_ENABLED(CONFIG_MMU_EARLY)) { unsigned long ttb = arm_mem_ttb(membase, endmem); pr_debug("enabling MMU, ttb @ 0x%08lx\n", ttb); mmu_early_enable(membase, memsize, ttb); } free_mem_ptr = arm_mem_early_malloc(membase, endmem); free_mem_end_ptr = arm_mem_early_malloc_end(membase, endmem); pr_debug("uncompressing barebox binary at 0x%p (size 0x%08x) to 0x%08lx\n", pg_start, pg_len, barebox_base); pbl_barebox_uncompress((void*)barebox_base, pg_start, pg_len); arm_early_mmu_cache_flush(); flush_icache(); if (IS_ENABLED(CONFIG_THUMB2_BAREBOX)) barebox = (void *)(barebox_base + 1); else barebox = (void *)barebox_base; pr_debug("jumping to uncompressed image at 0x%p\n", barebox); barebox(membase, memsize, boarddata); }