/* * (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. * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <command.h> #include <asm/byteorder.h> #include <asm/zimage.h> #ifdef CONFIG_SYS_DEBUG static void hexdump(unsigned char *buf, int len) { int i; for (i = 0; i < len; i++) { if ((i % 16) == 0) printf("%s%08x: ", i ? "\n" : "", (unsigned int)&buf[i]); printf("%02x ", buf[i]); } printf("\n"); } #endif #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, int argc, char * const argv[], bootm_headers_t *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 = getenv("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, CONFIG_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; }