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