| // 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 <common.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_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 = 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, 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; |
| } |
| |
| static ulong get_sp(void) |
| { |
| ulong ret; |
| |
| asm("mov r15, %0" : "=r"(ret) : ); |
| return ret; |
| } |
| |
| void arch_lmb_reserve(struct lmb *lmb) |
| { |
| arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 4096); |
| } |