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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (c) Copyright 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> * (c) Copyright 2008 Renesas Solutions Corp. */ #include <config.h> #include <bootm.h> #include <command.h> #include <env.h> #include <image.h> #include <asm/byteorder.h> #include <asm/global_data.h> #include <asm/zimage.h> DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_SH_SDRAM_OFFSET #define GET_INITRD_START(initrd, linux) (initrd - linux + CONFIG_SH_SDRAM_OFFSET) #else #define GET_INITRD_START(initrd, linux) (initrd - linux) #endif static void set_sh_linux_param(unsigned long param_addr, unsigned long data) { *(unsigned long *)(param_addr) = data; } static unsigned long sh_check_cmd_arg(char *cmdline, char *key, int base) { unsigned long val = 0; char *p = strstr(cmdline, key); if (p) { p += strlen(key); val = simple_strtol(p, NULL, base); } return val; } int do_bootm_linux(int flag, struct bootm_info *bmi) { struct bootm_headers *images = bmi->images; /* Linux kernel load address */ void (*kernel) (void) = (void (*)(void))images->ep; /* empty_zero_page */ unsigned char *param = (unsigned char *)image_get_load(images->legacy_hdr_os); /* Linux kernel command line */ char *cmdline = (char *)param + COMMAND_LINE; /* PAGE_SIZE */ unsigned long size = images->ep - (unsigned long)param; char *bootargs = env_get("bootargs"); /* * allow the PREP bootm subcommand, it is required for bootm to work */ if (flag & BOOTM_STATE_OS_PREP) return 0; if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) return 1; /* Clear zero page */ memset(param, 0, size); /* Set commandline */ strcpy(cmdline, bootargs); /* Initrd */ if (images->rd_start || images->rd_end) { unsigned long ramdisk_flags = 0; int val = sh_check_cmd_arg(bootargs, CMD_ARG_RD_PROMPT, 10); if (val == 1) ramdisk_flags |= RD_PROMPT; else ramdisk_flags &= ~RD_PROMPT; val = sh_check_cmd_arg(bootargs, CMD_ARG_RD_DOLOAD, 10); if (val == 1) ramdisk_flags |= RD_DOLOAD; else ramdisk_flags &= ~RD_DOLOAD; set_sh_linux_param((unsigned long)param + MOUNT_ROOT_RDONLY, 0x0001); set_sh_linux_param((unsigned long)param + RAMDISK_FLAGS, ramdisk_flags); set_sh_linux_param((unsigned long)param + ORIG_ROOT_DEV, 0x0200); set_sh_linux_param((unsigned long)param + LOADER_TYPE, 0x0001); set_sh_linux_param((unsigned long)param + INITRD_START, GET_INITRD_START(images->rd_start, CFG_SYS_SDRAM_BASE)); set_sh_linux_param((unsigned long)param + INITRD_SIZE, images->rd_end - images->rd_start); } /* Boot kernel */ kernel(); /* does not return */ return 1; } |