1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (c) 2011 The Chromium OS Authors. 4 * Copyright (c) 2015 Sjoerd Simons <sjoerd.simons (at) collabora.co.uk> 5 */ 6 7 #include <common.h> 8 #include <asm/io.h> 9 10 #define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818 11 12 struct arm_z_header { 13 uint32_t code[9]; 14 uint32_t zi_magic; 15 uint32_t zi_start; 16 uint32_t zi_end; 17 } __attribute__ ((__packed__)); 18 19 int bootz_setup(ulong image, ulong *start, ulong *end) 20 { 21 uint8_t *zimage = map_sysmem(image, 0); 22 struct arm_z_header *arm_hdr = (struct arm_z_header *)zimage; 23 int ret = 0; 24 25 if (memcmp(zimage + 0x202, "HdrS", 4) == 0) { 26 uint8_t setup_sects = *(zimage + 0x1f1); 27 uint32_t syssize = 28 le32_to_cpu(*(uint32_t *)(zimage + 0x1f4)); 29 30 *start = 0; 31 *end = (setup_sects + 1) * 512 + syssize * 16; 32 33 printf("setting up X86 zImage [ %ld - %ld ]\n", 34 *start, *end); 35 } else if (le32_to_cpu(arm_hdr->zi_magic) == LINUX_ARM_ZIMAGE_MAGIC) { 36 *start = le32_to_cpu(arm_hdr->zi_start); 37 *end = le32_to_cpu(arm_hdr->zi_end); 38 39 printf("setting up ARM zImage [ %ld - %ld ]\n", 40 *start, *end); 41 } else { 42 printf("Unrecognized zImage\n"); 43 ret = 1; 44 } 45 46 unmap_sysmem((void *)image); 47 48 return ret; 49 } 50 51 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) 52 { 53 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) { 54 bootstage_mark(BOOTSTAGE_ID_RUN_OS); 55 printf("## Transferring control to Linux (at address %08lx)...\n", 56 images->ep); 57 printf("sandbox: continuing, as we cannot run Linux\n"); 58 } 59 60 return 0; 61 } 62
