// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (c) 2011 The Chromium OS Authors. * Copyright (c) 2015 Sjoerd Simons <sjoerd.simons@collabora.co.uk> */ #include <common.h> #include <bootstage.h> #include <image.h> #include <asm/io.h> #define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818 struct arm_z_header { uint32_t code[9]; uint32_t zi_magic; uint32_t zi_start; uint32_t zi_end; } __attribute__ ((__packed__)); int bootz_setup(ulong image, ulong *start, ulong *end) { uint8_t *zimage = map_sysmem(image, 0); struct arm_z_header *arm_hdr = (struct arm_z_header *)zimage; int ret = 0; if (memcmp(zimage + 0x202, "HdrS", 4) == 0) { uint8_t setup_sects = *(zimage + 0x1f1); uint32_t syssize = le32_to_cpu(*(uint32_t *)(zimage + 0x1f4)); *start = 0; *end = (setup_sects + 1) * 512 + syssize * 16; printf("setting up X86 zImage [ %ld - %ld ]\n", *start, *end); } else if (le32_to_cpu(arm_hdr->zi_magic) == LINUX_ARM_ZIMAGE_MAGIC) { *start = le32_to_cpu(arm_hdr->zi_start); *end = le32_to_cpu(arm_hdr->zi_end); printf("setting up ARM zImage [ %ld - %ld ]\n", *start, *end); } else { printf("Unrecognized zImage\n"); ret = 1; } unmap_sysmem((void *)image); return ret; } /* Subcommand: PREP */ static int boot_prep_linux(struct bootm_headers *images) { int ret; if (CONFIG_IS_ENABLED(LMB)) { ret = image_setup_linux(images); if (ret) return ret; } return 0; } int do_bootm_linux(int flag, int argc, char *argv[], struct bootm_headers *images) { if (flag & BOOTM_STATE_OS_PREP) return boot_prep_linux(images); if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) { bootstage_mark(BOOTSTAGE_ID_RUN_OS); printf("## Transferring control to Linux (at address %08lx)...\n", images->ep); printf("sandbox: continuing, as we cannot run Linux\n"); } return 0; }