X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Fmips%2Flib%2Fbootm.c;h=aa0475a4954e5920e2fad7a785175bb71c5af28e;hb=fb64cda579985e21610672eae44faf40eadd71ea;hp=54af24cba3f7cd8af0ed843e72a2399ae07e0ce2;hpb=ea0364f1bbfed1e3ea711147420875cf338fe77a;p=u-boot diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c index 54af24cba3..aa0475a495 100644 --- a/arch/mips/lib/bootm.c +++ b/arch/mips/lib/bootm.c @@ -2,173 +2,349 @@ * (C) Copyright 2003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * + * SPDX-License-Identifier: GPL-2.0+ */ #include -#include #include -#include -#include +#include #include +#include DECLARE_GLOBAL_DATA_PTR; #define LINUX_MAX_ENVS 256 #define LINUX_MAX_ARGS 256 -static int linux_argc; -static char ** linux_argv; +static int linux_argc; +static char **linux_argv; +static char *linux_argp; -static char ** linux_env; -static char * linux_env_p; -static int linux_env_idx; +static char **linux_env; +static char *linux_env_p; +static int linux_env_idx; -static void linux_params_init (ulong start, char * commandline); -static void linux_env_set (char * env_name, char * env_val); - -int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) +static ulong arch_get_sp(void) { - void (*theKernel) (int, char **, char **, int *); - char *commandline = getenv ("bootargs"); - char env_buf[12]; - char *cp; - - if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) - return 1; - - /* find kernel entry point */ - theKernel = (void (*)(int, char **, char **, int *))images->ep; + ulong ret; - show_boot_progress (15); + __asm__ __volatile__("move %0, $sp" : "=r"(ret) : ); -#ifdef DEBUG - printf ("## Transferring control to Linux (at address %08lx) ...\n", - (ulong) theKernel); -#endif - - linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline); - -#ifdef CONFIG_MEMSIZE_IN_BYTES - sprintf (env_buf, "%lu", (ulong)gd->ram_size); - debug ("## Giving linux memsize in bytes, %lu\n", (ulong)gd->ram_size); -#else - sprintf (env_buf, "%lu", (ulong)(gd->ram_size >> 20)); - debug ("## Giving linux memsize in MB, %lu\n", (ulong)(gd->ram_size >> 20)); -#endif /* CONFIG_MEMSIZE_IN_BYTES */ + return ret; +} - linux_env_set ("memsize", env_buf); +void arch_lmb_reserve(struct lmb *lmb) +{ + ulong sp; - sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (images->rd_start)); - linux_env_set ("initrd_start", env_buf); + sp = arch_get_sp(); + debug("## Current stack ends at 0x%08lx\n", sp); - sprintf (env_buf, "0x%X", (uint) (images->rd_end - images->rd_start)); - linux_env_set ("initrd_size", env_buf); + /* adjust sp by 4K to be safe */ + sp -= 4096; + lmb_reserve(lmb, sp, CONFIG_SYS_SDRAM_BASE + gd->ram_size - sp); +} - sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart)); - linux_env_set ("flash_start", env_buf); +static void linux_cmdline_init(void) +{ + linux_argc = 1; + linux_argv = (char **)UNCACHED_SDRAM(gd->bd->bi_boot_params); + linux_argv[0] = 0; + linux_argp = (char *)(linux_argv + LINUX_MAX_ARGS); +} - sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize)); - linux_env_set ("flash_size", env_buf); +static void linux_cmdline_set(const char *value, size_t len) +{ + linux_argv[linux_argc] = linux_argp; + memcpy(linux_argp, value, len); + linux_argp[len] = 0; - cp = getenv("ethaddr"); - if (cp != NULL) { - linux_env_set("ethaddr", cp); - } + linux_argp += len + 1; + linux_argc++; +} - cp = getenv("eth1addr"); - if (cp != NULL) { - linux_env_set("eth1addr", cp); - } +static void linux_cmdline_dump(void) +{ + int i; - /* we assume that the kernel is in place */ - printf ("\nStarting kernel ...\n\n"); + debug("## cmdline argv at 0x%p, argp at 0x%p\n", + linux_argv, linux_argp); - theKernel (linux_argc, linux_argv, linux_env, 0); - /* does not return */ - return 1; + for (i = 1; i < linux_argc; i++) + debug(" arg %03d: %s\n", i, linux_argv[i]); } -static void linux_params_init (ulong start, char *line) +static void linux_cmdline_legacy(bootm_headers_t *images) { - char *next, *quote, *argp; + const char *bootargs, *next, *quote; - linux_argc = 1; - linux_argv = (char **) start; - linux_argv[0] = 0; - argp = (char *) (linux_argv + LINUX_MAX_ARGS); + linux_cmdline_init(); + + bootargs = getenv("bootargs"); + if (!bootargs) + return; - next = line; + next = bootargs; - while (line && *line && linux_argc < LINUX_MAX_ARGS) { - quote = strchr (line, '"'); - next = strchr (line, ' '); + while (bootargs && *bootargs && linux_argc < LINUX_MAX_ARGS) { + quote = strchr(bootargs, '"'); + next = strchr(bootargs, ' '); - while (next != NULL && quote != NULL && quote < next) { - /* we found a left quote before the next blank + while (next && quote && quote < next) { + /* + * we found a left quote before the next blank * now we have to find the matching right quote */ - next = strchr (quote + 1, '"'); - if (next != NULL) { - quote = strchr (next + 1, '"'); - next = strchr (next + 1, ' '); + next = strchr(quote + 1, '"'); + if (next) { + quote = strchr(next + 1, '"'); + next = strchr(next + 1, ' '); } } - if (next == NULL) { - next = line + strlen (line); - } - - linux_argv[linux_argc] = argp; - memcpy (argp, line, next - line); - argp[next - line] = 0; + if (!next) + next = bootargs + strlen(bootargs); - argp += next - line + 1; - linux_argc++; + linux_cmdline_set(bootargs, next - bootargs); if (*next) next++; - line = next; + bootargs = next; + } +} + +static void linux_cmdline_append(bootm_headers_t *images) +{ + char buf[24]; + ulong mem, rd_start, rd_size; + + /* append mem */ + mem = gd->ram_size >> 20; + sprintf(buf, "mem=%luM", mem); + linux_cmdline_set(buf, strlen(buf)); + + /* append rd_start and rd_size */ + rd_start = images->initrd_start; + rd_size = images->initrd_end - images->initrd_start; + + if (rd_size) { + sprintf(buf, "rd_start=0x%08lX", rd_start); + linux_cmdline_set(buf, strlen(buf)); + sprintf(buf, "rd_size=0x%lX", rd_size); + linux_cmdline_set(buf, strlen(buf)); } +} - linux_env = (char **) (((ulong) argp + 15) & ~15); +static void linux_env_init(void) +{ + linux_env = (char **)(((ulong) linux_argp + 15) & ~15); linux_env[0] = 0; - linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS); + linux_env_p = (char *)(linux_env + LINUX_MAX_ENVS); linux_env_idx = 0; } -static void linux_env_set (char *env_name, char *env_val) +static void linux_env_set(const char *env_name, const char *env_val) { if (linux_env_idx < LINUX_MAX_ENVS - 1) { linux_env[linux_env_idx] = linux_env_p; - strcpy (linux_env_p, env_name); - linux_env_p += strlen (env_name); + strcpy(linux_env_p, env_name); + linux_env_p += strlen(env_name); - strcpy (linux_env_p, "="); - linux_env_p += 1; + if (CONFIG_IS_ENABLED(MALTA)) { + linux_env_p++; + linux_env[++linux_env_idx] = linux_env_p; + } else { + *linux_env_p++ = '='; + } - strcpy (linux_env_p, env_val); - linux_env_p += strlen (env_val); + strcpy(linux_env_p, env_val); + linux_env_p += strlen(env_val); linux_env_p++; linux_env[++linux_env_idx] = 0; } } + +static void linux_env_legacy(bootm_headers_t *images) +{ + char env_buf[12]; + const char *cp; + ulong rd_start, rd_size; + + if (CONFIG_IS_ENABLED(MEMSIZE_IN_BYTES)) { + sprintf(env_buf, "%lu", (ulong)gd->ram_size); + debug("## Giving linux memsize in bytes, %lu\n", + (ulong)gd->ram_size); + } else { + sprintf(env_buf, "%lu", (ulong)(gd->ram_size >> 20)); + debug("## Giving linux memsize in MB, %lu\n", + (ulong)(gd->ram_size >> 20)); + } + + rd_start = UNCACHED_SDRAM(images->initrd_start); + rd_size = images->initrd_end - images->initrd_start; + + linux_env_init(); + + linux_env_set("memsize", env_buf); + + sprintf(env_buf, "0x%08lX", rd_start); + linux_env_set("initrd_start", env_buf); + + sprintf(env_buf, "0x%lX", rd_size); + linux_env_set("initrd_size", env_buf); + + sprintf(env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart)); + linux_env_set("flash_start", env_buf); + + sprintf(env_buf, "0x%X", (uint) (gd->bd->bi_flashsize)); + linux_env_set("flash_size", env_buf); + + cp = getenv("ethaddr"); + if (cp) + linux_env_set("ethaddr", cp); + + cp = getenv("eth1addr"); + if (cp) + linux_env_set("eth1addr", cp); + + if (CONFIG_IS_ENABLED(MALTA)) { + sprintf(env_buf, "%un8r", gd->baudrate); + linux_env_set("modetty0", env_buf); + } +} + +static int boot_reloc_ramdisk(bootm_headers_t *images) +{ + ulong rd_len = images->rd_end - images->rd_start; + + /* + * In case of legacy uImage's, relocation of ramdisk is already done + * by do_bootm_states() and should not repeated in 'bootm prep'. + */ + if (images->state & BOOTM_STATE_RAMDISK) { + debug("## Ramdisk already relocated\n"); + return 0; + } + + return boot_ramdisk_high(&images->lmb, images->rd_start, + rd_len, &images->initrd_start, &images->initrd_end); +} + +static int boot_reloc_fdt(bootm_headers_t *images) +{ + /* + * In case of legacy uImage's, relocation of FDT is already done + * by do_bootm_states() and should not repeated in 'bootm prep'. + */ + if (images->state & BOOTM_STATE_FDT) { + debug("## FDT already relocated\n"); + return 0; + } + +#if CONFIG_IS_ENABLED(MIPS_BOOT_FDT) && CONFIG_IS_ENABLED(OF_LIBFDT) + boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr); + return boot_relocate_fdt(&images->lmb, &images->ft_addr, + &images->ft_len); +#else + return 0; +#endif +} + +int arch_fixup_fdt(void *blob) +{ +#if CONFIG_IS_ENABLED(MIPS_BOOT_FDT) && CONFIG_IS_ENABLED(OF_LIBFDT) + u64 mem_start = virt_to_phys((void *)gd->bd->bi_memstart); + u64 mem_size = gd->ram_size; + + return fdt_fixup_memory_banks(blob, &mem_start, &mem_size, 1); +#else + return 0; +#endif +} + +static int boot_setup_fdt(bootm_headers_t *images) +{ + return image_setup_libfdt(images, images->ft_addr, images->ft_len, + &images->lmb); +} + +static void boot_prep_linux(bootm_headers_t *images) +{ + boot_reloc_ramdisk(images); + + if (CONFIG_IS_ENABLED(MIPS_BOOT_FDT) && images->ft_len) { + boot_reloc_fdt(images); + boot_setup_fdt(images); + } else { + if (CONFIG_IS_ENABLED(CONFIG_MIPS_BOOT_ENV_LEGACY)) + linux_env_legacy(images); + + if (CONFIG_IS_ENABLED(MIPS_BOOT_CMDLINE_LEGACY)) { + linux_cmdline_legacy(images); + + if (!CONFIG_IS_ENABLED(CONFIG_MIPS_BOOT_ENV_LEGACY)) + linux_cmdline_append(images); + + linux_cmdline_dump(); + } + } +} + +static void boot_jump_linux(bootm_headers_t *images) +{ + typedef void __noreturn (*kernel_entry_t)(int, ulong, ulong, ulong); + kernel_entry_t kernel = (kernel_entry_t) images->ep; + ulong linux_extra = 0; + + debug("## Transferring control to Linux (at address %p) ...\n", kernel); + + bootstage_mark(BOOTSTAGE_ID_RUN_OS); + + if (CONFIG_IS_ENABLED(MALTA)) + linux_extra = gd->ram_size; + +#if CONFIG_IS_ENABLED(BOOTSTAGE_FDT) + bootstage_fdt_add_report(); +#endif +#if CONFIG_IS_ENABLED(BOOTSTAGE_REPORT) + bootstage_report(); +#endif + + if (images->ft_len) + kernel(-2, (ulong)images->ft_addr, 0, 0); + else + kernel(linux_argc, (ulong)linux_argv, (ulong)linux_env, + linux_extra); +} + +int do_bootm_linux(int flag, int argc, char * const argv[], + bootm_headers_t *images) +{ + /* No need for those on MIPS */ + if (flag & BOOTM_STATE_OS_BD_T) + return -1; + + /* + * Cmdline init has been moved to 'bootm prep' because it has to be + * done after relocation of ramdisk to always pass correct values + * for rd_start and rd_size to Linux kernel. + */ + if (flag & BOOTM_STATE_OS_CMDLINE) + return 0; + + if (flag & BOOTM_STATE_OS_PREP) { + boot_prep_linux(images); + return 0; + } + + if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) { + boot_jump_linux(images); + return 0; + } + + /* does not return */ + return 1; +}