diff options
Diffstat (limited to 'lib_ppc')
| -rw-r--r-- | lib_ppc/bootm.c | 106 |
1 files changed, 44 insertions, 62 deletions
diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c index d73d2fd..7eb8712 100644 --- a/lib_ppc/bootm.c +++ b/lib_ppc/bootm.c @@ -51,10 +51,7 @@ DECLARE_GLOBAL_DATA_PTR; extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); static ulong get_sp (void); - -#if defined(CONFIG_CMD_BDI) -extern int do_bdinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); -#endif +static void set_clocks_in_mhz (bd_t *kbd); void __attribute__((noinline)) do_bootm_linux(cmd_tbl_t *cmdtp, int flag, @@ -62,14 +59,12 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, image_header_t *hdr, int verify) { + ulong sp, sp_limit, alloc_current; + ulong initrd_start, initrd_end; ulong rd_data_start, rd_data_end, rd_len; ulong cmd_start, cmd_end; - char *cmdline; - - ulong sp_limit; - char *s; bd_t *kbd; void (*kernel)(bd_t *, ulong, ulong, ulong, ulong); @@ -88,60 +83,18 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, * memory, which means far enough below the current stack * pointer. */ + sp = get_sp(); + debug ("## Current stack ends at 0x%08lx ", sp); - sp_limit = get_sp(); - debug ("## Current stack ends at 0x%08lX ", sp_limit); - - sp_limit -= 2048; /* just to be sure */ - if (sp_limit > CFG_BOOTMAPSZ) - sp_limit = CFG_BOOTMAPSZ; - sp_limit &= ~0xF; - - debug ("=> set upper limit to 0x%08lX\n", sp_limit); + alloc_current = sp_limit = get_boot_sp_limit(sp); + debug ("=> set upper limit to 0x%08lx\n", sp_limit); - cmdline = (char *)((sp_limit - CFG_BARGSIZE) & ~0xF); - kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF); + /* allocate space and init command line */ + alloc_current = get_boot_cmdline (alloc_current, &cmd_start, &cmd_end); - if ((s = getenv("bootargs")) == NULL) - s = ""; - - strcpy (cmdline, s); - - cmd_start = (ulong)&cmdline[0]; - cmd_end = cmd_start + strlen(cmdline); - - *kbd = *(gd->bd); - -#ifdef DEBUG - printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end); - -#if defined(CONFIG_CMD_BDI) - do_bdinfo (NULL, 0, 0, NULL); -#endif -#endif - - if ((s = getenv ("clocks_in_mhz")) != NULL) { - /* convert all clock information to MHz */ - kbd->bi_intfreq /= 1000000L; - kbd->bi_busfreq /= 1000000L; -#if defined(CONFIG_MPC8220) - kbd->bi_inpfreq /= 1000000L; - kbd->bi_pcifreq /= 1000000L; - kbd->bi_pevfreq /= 1000000L; - kbd->bi_flbfreq /= 1000000L; - kbd->bi_vcofreq /= 1000000L; -#endif -#if defined(CONFIG_CPM2) - kbd->bi_cpmfreq /= 1000000L; - kbd->bi_brgfreq /= 1000000L; - kbd->bi_sccfreq /= 1000000L; - kbd->bi_vco /= 1000000L; -#endif -#if defined(CONFIG_MPC5xxx) - kbd->bi_ipbfreq /= 1000000L; - kbd->bi_pcifreq /= 1000000L; -#endif /* CONFIG_MPC5xxx */ - } + /* allocate space for kernel copy of board info */ + alloc_current = get_boot_kbd (alloc_current, &kbd); + set_clocks_in_mhz(kbd); /* find kernel */ kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr); @@ -152,7 +105,8 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, rd_len = rd_data_end - rd_data_start; - ramdisk_high (rd_data_start, rd_len, kbd, sp_limit, get_sp (), + alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len, + kbd, sp_limit, get_sp (), &initrd_start, &initrd_end); #if defined(CONFIG_OF_LIBFDT) @@ -266,8 +220,8 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, of_len = be32_to_cpu(fdt_totalsize(of_data)); - /* position on a 4K boundary before the kbd */ - of_start = (ulong)kbd - of_len; + /* 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", of_data, of_data + of_len - 1, of_len, of_len); @@ -353,6 +307,34 @@ static ulong get_sp (void) return sp; } +static void set_clocks_in_mhz (bd_t *kbd) +{ + char *s; + + if ((s = getenv ("clocks_in_mhz")) != NULL) { + /* convert all clock information to MHz */ + kbd->bi_intfreq /= 1000000L; + kbd->bi_busfreq /= 1000000L; +#if defined(CONFIG_MPC8220) + kbd->bi_inpfreq /= 1000000L; + kbd->bi_pcifreq /= 1000000L; + kbd->bi_pevfreq /= 1000000L; + kbd->bi_flbfreq /= 1000000L; + kbd->bi_vcofreq /= 1000000L; +#endif +#if defined(CONFIG_CPM2) + kbd->bi_cpmfreq /= 1000000L; + kbd->bi_brgfreq /= 1000000L; + kbd->bi_sccfreq /= 1000000L; + kbd->bi_vco /= 1000000L; +#endif +#if defined(CONFIG_MPC5xxx) + kbd->bi_ipbfreq /= 1000000L; + kbd->bi_pcifreq /= 1000000L; +#endif /* CONFIG_MPC5xxx */ + } +} + #if defined(CONFIG_OF_LIBFDT) static void fdt_error (const char *msg) { |