X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=lib_ppc%2Fbootm.c;h=0d702bf25178670c2689006d17083c6fa2452ee3;hb=3bc8556f9b24af60dba2b55a0abb1182dff45ecc;hp=a1bbfc63144a8397aae51646284109bb92e1e4d6;hpb=d5934ad7756f038a393a9cfab76a4fe306d9d930;p=oweals%2Fu-boot.git diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c index a1bbfc6314..0d702bf251 100644 --- a/lib_ppc/bootm.c +++ b/lib_ppc/bootm.c @@ -23,14 +23,13 @@ * MA 02111-1307 USA */ -#define DEBUG #include #include #include #include #include -#include +#include #include #include #include @@ -40,154 +39,293 @@ #include #include -static void fdt_error (const char *msg); -static ulong get_fdt (ulong alloc_current, cmd_tbl_t *cmdtp, int flag, - int argc, char *argv[], - bootm_headers_t *images, char **of_flat_tree); #endif -#ifdef CFG_INIT_RAM_LOCK +#ifdef CONFIG_SYS_INIT_RAM_LOCK #include #endif DECLARE_GLOBAL_DATA_PTR; extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); +extern ulong get_effective_memsize(void); static ulong get_sp (void); static void set_clocks_in_mhz (bd_t *kbd); -void __attribute__((noinline)) -do_bootm_linux(cmd_tbl_t *cmdtp, int flag, - int argc, char *argv[], - bootm_headers_t *images, - int verify) +#ifndef CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE +#define CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE (768*1024*1024) +#endif + +static void boot_jump_linux(bootm_headers_t *images) { - ulong sp, sp_limit, alloc_current; + void (*kernel)(bd_t *, ulong r4, ulong r5, ulong r6, + ulong r7, ulong r8, ulong r9); +#ifdef CONFIG_OF_LIBFDT + char *of_flat_tree = images->ft_addr; +#endif + + kernel = (void (*)(bd_t *, ulong, ulong, ulong, + ulong, ulong, ulong))images->ep; + debug ("## Transferring control to Linux (at address %08lx) ...\n", + (ulong)kernel); - ulong initrd_start, initrd_end; - ulong rd_data_start, rd_data_end, rd_len; + show_boot_progress (15); - ulong cmd_start, cmd_end; - bd_t *kbd; - ulong ep = 0; - void (*kernel)(bd_t *, ulong, ulong, ulong, ulong); +#if defined(CONFIG_SYS_INIT_RAM_LOCK) && !defined(CONFIG_E500) + unlock_ram_in_cache(); +#endif #if defined(CONFIG_OF_LIBFDT) - char *of_flat_tree; + if (of_flat_tree) { /* device tree; boot new style */ + /* + * Linux Kernel Parameters (passing device tree): + * r3: pointer to the fdt + * r4: 0 + * r5: 0 + * r6: epapr magic + * r7: size of IMA in bytes + * r8: 0 + * r9: 0 + */ +#if defined(CONFIG_85xx) || defined(CONFIG_440) + #define EPAPR_MAGIC (0x45504150) +#else + #define EPAPR_MAGIC (0x65504150) +#endif + + debug (" Booting using OF flat tree...\n"); + (*kernel) ((bd_t *)of_flat_tree, 0, 0, EPAPR_MAGIC, + CONFIG_SYS_BOOTMAPSZ, 0, 0); + /* does not return */ + } else +#endif + { + /* + * Linux Kernel Parameters (passing board info data): + * r3: ptr to board info data + * r4: initrd_start or 0 if no initrd + * r5: initrd_end - unused if r4 is 0 + * r6: Start of command line string + * r7: End of command line string + * r8: 0 + * r9: 0 + */ + ulong cmd_start = images->cmdline_start; + ulong cmd_end = images->cmdline_end; + ulong initrd_start = images->initrd_start; + ulong initrd_end = images->initrd_end; + bd_t *kbd = images->kbd; + + debug (" Booting using board info...\n"); + (*kernel) (kbd, initrd_start, initrd_end, + cmd_start, cmd_end, 0, 0); + /* does not return */ + } + return ; +} + +void arch_lmb_reserve(struct lmb *lmb) +{ + phys_size_t bootm_size; + ulong size, sp, bootmap_base; + + bootmap_base = getenv_bootm_low(); + bootm_size = getenv_bootm_size(); + +#ifdef DEBUG + if (((u64)bootmap_base + bootm_size) > + (CONFIG_SYS_SDRAM_BASE + (u64)gd->ram_size)) + puts("WARNING: bootm_low + bootm_size exceed total memory\n"); + if ((bootmap_base + bootm_size) > get_effective_memsize()) + puts("WARNING: bootm_low + bootm_size exceed eff. memory\n"); #endif + size = min(bootm_size, get_effective_memsize()); + size = min(size, CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE); + + if (size < bootm_size) { + ulong base = bootmap_base + size; + printf("WARNING: adjusting available memory to %lx\n", size); + lmb_reserve(lmb, base, bootm_size - size); + } + /* * Booting a (Linux) kernel image * * Allocate space for command line and board info - the * address should be as high as possible within the reach of - * the kernel (see CFG_BOOTMAPSZ settings), but in unused + * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused * memory, which means far enough below the current stack * pointer. */ sp = get_sp(); - debug ("## Current stack ends at 0x%08lx ", sp); + debug ("## Current stack ends at 0x%08lx\n", sp); - alloc_current = sp_limit = get_boot_sp_limit(sp); - debug ("=> set upper limit to 0x%08lx\n", sp_limit); + /* adjust sp by 1K to be safe */ + sp -= 1024; + lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + get_effective_memsize() - sp)); - /* allocate space and init command line */ - alloc_current = get_boot_cmdline (alloc_current, &cmd_start, &cmd_end); + return ; +} - /* allocate space for kernel copy of board info */ - alloc_current = get_boot_kbd (alloc_current, &kbd); - set_clocks_in_mhz(kbd); - - /* find kernel entry point */ - if (images->legacy_hdr_valid) { - ep = image_get_ep (images->legacy_hdr_os); -#if defined(CONFIG_FIT) - } else if (images->fit_uname_os) { - fit_unsupported_reset ("PPC linux bootm"); - do_reset (cmdtp, flag, argc, argv); +static void boot_prep_linux(void) +{ +#if (CONFIG_NUM_CPUS > 1) + /* if we are MP make sure to flush the dcache() to any changes are made + * visibile to all other cores */ + flush_dcache(); #endif - } else { - puts ("Could not find kernel entry point!\n"); - do_reset (cmdtp, flag, argc, argv); + return ; +} + +static int boot_cmdline_linux(bootm_headers_t *images) +{ + ulong bootmap_base = getenv_bootm_low(); + ulong of_size = images->ft_len; + struct lmb *lmb = &images->lmb; + ulong *cmd_start = &images->cmdline_start; + ulong *cmd_end = &images->cmdline_end; + + int ret = 0; + + if (!of_size) { + /* allocate space and init command line */ + ret = boot_get_cmdline (lmb, cmd_start, cmd_end, bootmap_base); + if (ret) { + puts("ERROR with allocation of cmdline\n"); + return ret; + } } - kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))ep; - /* find ramdisk */ - get_ramdisk (cmdtp, flag, argc, argv, images, verify, - IH_ARCH_PPC, &rd_data_start, &rd_data_end); + return ret; +} - rd_len = rd_data_end - rd_data_start; +static int boot_bd_t_linux(bootm_headers_t *images) +{ + ulong bootmap_base = getenv_bootm_low(); + ulong of_size = images->ft_len; + struct lmb *lmb = &images->lmb; + bd_t **kbd = &images->kbd; + + int ret = 0; + + if (!of_size) { + /* allocate space for kernel copy of board info */ + ret = boot_get_kbd (lmb, kbd, bootmap_base); + if (ret) { + puts("ERROR with allocation of kernel bd\n"); + return ret; + } + set_clocks_in_mhz(*kbd); + } - alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len, - kbd, sp_limit, get_sp (), - &initrd_start, &initrd_end); + return ret; +} +static int boot_body_linux(bootm_headers_t *images) +{ + ulong rd_len; + struct lmb *lmb = &images->lmb; + ulong *initrd_start = &images->initrd_start; + ulong *initrd_end = &images->initrd_end; #if defined(CONFIG_OF_LIBFDT) - /* find flattened device tree */ - alloc_current = get_fdt (alloc_current, - cmdtp, flag, argc, argv, images, &of_flat_tree); + ulong bootmap_base = getenv_bootm_low(); + ulong of_size = images->ft_len; + char **of_flat_tree = &images->ft_addr; +#endif + + int ret; + + /* allocate space and init command line */ + ret = boot_cmdline_linux(images); + if (ret) + return ret; + + /* allocate space for kernel copy of board info */ + ret = boot_bd_t_linux(images); + if (ret) + return ret; + + rd_len = images->rd_end - images->rd_start; + ret = boot_ramdisk_high (lmb, images->rd_start, rd_len, initrd_start, initrd_end); + if (ret) + return ret; + +#if defined(CONFIG_OF_LIBFDT) + ret = boot_relocate_fdt(lmb, bootmap_base, of_flat_tree, &of_size); + if (ret) + return ret; /* * Add the chosen node if it doesn't exist, add the env and bd_t * if the user wants it (the logic is in the subroutines). */ - if (of_flat_tree) { - if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) { - fdt_error ("/chosen node create failed"); - do_reset (cmdtp, flag, argc, argv); - } -#ifdef CONFIG_OF_HAS_UBOOT_ENV - if (fdt_env(of_flat_tree) < 0) { - fdt_error ("/u-boot-env node create failed"); - do_reset (cmdtp, flag, argc, argv); - } -#endif -#ifdef CONFIG_OF_HAS_BD_T - if (fdt_bd_t(of_flat_tree) < 0) { - fdt_error ("/bd_t node create failed"); - do_reset (cmdtp, flag, argc, argv); + if (of_size) { + if (fdt_chosen(*of_flat_tree, 1) < 0) { + puts ("ERROR: "); + puts ("/chosen node create failed"); + puts (" - must RESET the board to recover.\n"); + return -1; } -#endif #ifdef CONFIG_OF_BOARD_SETUP /* Call the board-specific fixup routine */ - ft_board_setup(of_flat_tree, gd->bd); + ft_board_setup(*of_flat_tree, gd->bd); #endif + + /* Delete the old LMB reservation */ + lmb_free(lmb, (phys_addr_t)(u32)*of_flat_tree, + (phys_size_t)fdt_totalsize(*of_flat_tree)); + + ret = fdt_resize(*of_flat_tree); + if (ret < 0) + return ret; + of_size = ret; + + if (*initrd_start && *initrd_end) + of_size += FDT_RAMDISK_OVERHEAD; + /* Create a new LMB reservation */ + lmb_reserve(lmb, (ulong)*of_flat_tree, of_size); + + /* fixup the initrd now that we know where it should be */ + if (*initrd_start && *initrd_end) + fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1); } #endif /* CONFIG_OF_LIBFDT */ + return 0; +} - debug ("## Transferring control to Linux (at address %08lx) ...\n", - (ulong)kernel); +__attribute__((noinline)) +int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) +{ + int ret; - show_boot_progress (15); + if (flag & BOOTM_STATE_OS_CMDLINE) { + boot_cmdline_linux(images); + return 0; + } -#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500) - unlock_ram_in_cache(); -#endif + if (flag & BOOTM_STATE_OS_BD_T) { + boot_bd_t_linux(images); + return 0; + } -#if defined(CONFIG_OF_LIBFDT) - if (of_flat_tree) { /* device tree; boot new style */ - /* - * Linux Kernel Parameters (passing device tree): - * r3: pointer to the fdt, followed by the board info data - * r4: physical pointer to the kernel itself - * r5: NULL - * r6: NULL - * r7: NULL - */ - (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0); - /* does not return */ + if (flag & BOOTM_STATE_OS_PREP) { + boot_prep_linux(); + return 0; } -#endif - /* - * Linux Kernel Parameters (passing board info data): - * r3: ptr to board info data - * r4: initrd_start or 0 if no initrd - * r5: initrd_end - unused if r4 is 0 - * r6: Start of command line string - * r7: End of command line string - */ - (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); - /* does not return */ + + if (flag & BOOTM_STATE_OS_GO) { + boot_jump_linux(images); + return 0; + } + + boot_prep_linux(); + ret = boot_body_linux(images); + if (ret) + return ret; + boot_jump_linux(images); + + return 0; } static ulong get_sp (void) @@ -217,7 +355,7 @@ static void set_clocks_in_mhz (bd_t *kbd) kbd->bi_cpmfreq /= 1000000L; kbd->bi_brgfreq /= 1000000L; kbd->bi_sccfreq /= 1000000L; - kbd->bi_vco /= 1000000L; + kbd->bi_vco /= 1000000L; #endif #if defined(CONFIG_MPC5xxx) kbd->bi_ipbfreq /= 1000000L; @@ -225,241 +363,3 @@ static void set_clocks_in_mhz (bd_t *kbd) #endif /* CONFIG_MPC5xxx */ } } - -#if defined(CONFIG_OF_LIBFDT) -static void fdt_error (const char *msg) -{ - puts ("ERROR: "); - puts (msg); - puts (" - must RESET the board to recover.\n"); -} - -static ulong get_fdt (ulong alloc_current, - cmd_tbl_t *cmdtp, int flag, - int argc, char *argv[], - bootm_headers_t *images, char **of_flat_tree) -{ - ulong fdt_addr; - image_header_t *fdt_hdr; - char *fdt_blob = NULL; - ulong fdt_relocate = 0; - ulong new_alloc_current; - ulong image_start, image_end; - ulong load_start, load_end; -#if defined(CONFIG_FIT) - void *fit_hdr; - const char *fit_uname_config = NULL; - const char *fit_uname_fdt = NULL; - ulong default_addr; -#endif - - if (argc > 3) { -#if defined(CONFIG_FIT) - /* - * If the FDT blob comes from the FIT image and the FIT image - * address is omitted in the command line argument, try to use - * ramdisk or os FIT image address or default load address. - */ - if (images->fit_uname_rd) - default_addr = (ulong)images->fit_hdr_rd; - else if (images->fit_uname_os) - default_addr = (ulong)images->fit_hdr_os; - else - default_addr = load_addr; - - if (fit_parse_conf (argv[3], default_addr, - &fdt_addr, &fit_uname_config)) { - debug ("* fdt: config '%s' from image at 0x%08lx\n", - fit_uname_config, fdt_addr); - } else if (fit_parse_subimage (argv[3], default_addr, - &fdt_addr, &fit_uname_fdt)) { - debug ("* fdt: subimage '%s' from image at 0x%08lx\n", - fit_uname_fdt, fdt_addr); - } else -#endif - { - fdt_addr = simple_strtoul(argv[3], NULL, 16); - debug ("* fdt: cmdline image address = 0x%08lx\n", - fdt_addr); - } - - debug ("## Checking for 'FDT'/'FDT image' at %08lx\n", - fdt_addr); - - /* copy from dataflash if needed */ - fdt_addr = gen_get_image (fdt_addr); - - /* - * Check if there is an FDT image at the - * address provided in the second bootm argument - * check image type, for FIT images get a FIT node. - */ - switch (gen_image_get_format ((void *)fdt_addr)) { - case IMAGE_FORMAT_LEGACY: - debug ("* fdt: legacy format image\n"); - - fdt_hdr = (image_header_t *)fdt_addr; - printf ("## Flattened Device Tree Legacy Image at %08lx\n", - fdt_hdr); - - image_print_contents (fdt_hdr); - - image_start = (ulong)fdt_hdr; - image_end = image_get_image_end (fdt_hdr); - - load_start = image_get_load (fdt_hdr); - load_end = load_start + image_get_data_size (fdt_hdr); - - if ((load_start < image_end) && (load_end > image_start)) { - fdt_error ("fdt overwritten"); - do_reset (cmdtp, flag, argc, argv); - } - - puts (" Verifying Checksum ... "); - if (!image_check_hcrc (fdt_hdr)) { - fdt_error ("fdt header checksum invalid"); - do_reset (cmdtp, flag, argc, argv); - } - - if (!image_check_dcrc (fdt_hdr)) { - fdt_error ("fdt checksum invalid"); - do_reset (cmdtp, flag, argc, argv); - } - puts ("OK\n"); - - if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) { - fdt_error ("uImage is not a fdt"); - do_reset (cmdtp, flag, argc, argv); - } - if (image_get_comp (fdt_hdr) != IH_COMP_NONE) { - fdt_error ("uImage is compressed"); - do_reset (cmdtp, flag, argc, argv); - } - if (fdt_check_header ((char *)image_get_data (fdt_hdr)) != 0) { - fdt_error ("uImage data is not a fdt"); - do_reset (cmdtp, flag, argc, argv); - } - - memmove ((void *)image_get_load (fdt_hdr), - (void *)image_get_data (fdt_hdr), - image_get_data_size (fdt_hdr)); - - fdt_blob = (char *)image_get_load (fdt_hdr); - break; -#if defined(CONFIG_FIT) - case IMAGE_FORMAT_FIT: - - /* check FDT blob vs FIT hdr */ - if (fit_uname_config || fit_uname_fdt) { - /* - * FIT image - */ - fit_hdr = (void *)fdt_addr; - debug ("* fdt: FIT format image\n"); - fit_unsupported_reset ("PPC fdt"); - do_reset (cmdtp, flag, argc, argv); - } else { - /* - * FDT blob - */ - printf ("## Flattened Device Tree blob at %08lx\n", fdt_blob); - fdt_blob = (char *)fdt_addr; - } - break; -#endif - default: - fdt_error ("Did not find a cmdline Flattened Device Tree"); - do_reset (cmdtp, flag, argc, argv); - } - - printf (" Booting using the fdt blob at 0x%x\n", fdt_blob); - - } else if (images->legacy_hdr_valid && - image_check_type (images->legacy_hdr_os, IH_TYPE_MULTI)) { - - ulong fdt_data, fdt_len; - - /* - * Now check if we have a legacy multi-component image, - * get second entry data start address and len. - */ - printf ("## Flattened Device Tree from multi " - "component Image at %08lX\n", - (ulong)images->legacy_hdr_os); - - image_multi_getimg (images->legacy_hdr_os, 2, &fdt_data, &fdt_len); - if (fdt_len) { - - fdt_blob = (char *)fdt_data; - printf (" Booting using the fdt at 0x%x\n", fdt_blob); - - if (fdt_check_header (fdt_blob) != 0) { - fdt_error ("image is not a fdt"); - do_reset (cmdtp, flag, argc, argv); - } - - if (be32_to_cpu (fdt_totalsize (fdt_blob)) != fdt_len) { - fdt_error ("fdt size != image size"); - do_reset (cmdtp, flag, argc, argv); - } - } else { - fdt_error ("Did not find a Flattened Device Tree " - "in a legacy multi-component image"); - do_reset (cmdtp, flag, argc, argv); - } - } else { - debug ("## No Flattened Device Tree\n"); - *of_flat_tree = NULL; - return alloc_current; - } - -#ifndef CFG_NO_FLASH - /* move the blob if it is in flash (set fdt_relocate) */ - if (addr2info ((ulong)fdt_blob) != NULL) - fdt_relocate = 1; -#endif - -#ifdef CFG_BOOTMAPSZ - /* - * The blob must be within CFG_BOOTMAPSZ, - * so we flag it to be copied if it is not. - */ - if (fdt_blob >= (char *)CFG_BOOTMAPSZ) - fdt_relocate = 1; -#endif - - /* move flattend device tree if needed */ - if (fdt_relocate) { - int err; - ulong of_start, of_len; - - of_len = be32_to_cpu (fdt_totalsize (fdt_blob)); - - /* position on a 4K boundary before the alloc_current */ - of_start = alloc_current - of_len; - of_start &= ~(4096 - 1); /* align on page */ - - debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", - (ulong)fdt_blob, (ulong)fdt_blob + of_len - 1, - of_len, of_len); - - printf (" Loading Device Tree to %08lx, end %08lx ... ", - of_start, of_start + of_len - 1); - - err = fdt_open_into (fdt_blob, (void *)of_start, of_len); - if (err != 0) { - fdt_error ("fdt move failed"); - do_reset (cmdtp, flag, argc, argv); - } - puts ("OK\n"); - - *of_flat_tree = (char *)of_start; - new_alloc_current = of_start; - } else { - *of_flat_tree = fdt_blob; - new_alloc_current = alloc_current; - } - - return new_alloc_current; -} -#endif