diff options
Diffstat (limited to 'lib_m68k')
| -rw-r--r-- | lib_m68k/bootm.c | 72 |
1 files changed, 28 insertions, 44 deletions
diff --git a/lib_m68k/bootm.c b/lib_m68k/bootm.c index 3fd38e9..ac04da0 100644 --- a/lib_m68k/bootm.c +++ b/lib_m68k/bootm.c @@ -29,6 +29,9 @@ #include <watchdog.h> #include <environment.h> #include <asm/byteorder.h> +#ifdef CONFIG_SHOW_BOOT_PROGRESS +# include <status_led.h> +#endif DECLARE_GLOBAL_DATA_PTR; @@ -37,27 +40,19 @@ DECLARE_GLOBAL_DATA_PTR; #define LINUX_MAX_ENVS 256 #define LINUX_MAX_ARGS 256 -#ifdef CONFIG_SHOW_BOOT_PROGRESS -# include <status_led.h> -# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) -#else -# define SHOW_BOOT_PROGRESS(arg) -#endif - static ulong get_sp (void); +static void set_clocks_in_mhz (bd_t *kbd); void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[], image_header_t *hdr, int verify) { - ulong sp_limit; + ulong sp, sp_limit, alloc_current; ulong rd_data_start, rd_data_end, rd_len; ulong initrd_start, initrd_end; ulong cmd_start, cmd_end; - char *cmdline; - char *s; bd_t *kbd; void (*kernel) (bd_t *, ulong, ulong, ulong, ulong); @@ -70,41 +65,18 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, * memory, which means far enough below the current stack * pointer. */ - 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); - - cmdline = (char *)((sp_limit - CFG_BARGSIZE) & ~0xF); - kbd = (bd_t *) (((ulong) cmdline - sizeof(bd_t)) & ~0xF); - - if ((s = getenv("bootargs")) == NULL) - s = ""; - - strcpy(cmdline, s); - - cmd_start = (ulong) & cmdline[0]; - cmd_end = cmd_start + strlen(cmdline); - - *kbd = *(gd->bd); + sp = get_sp(); + debug ("## Current stack ends at 0x%08lx ", sp); -#ifdef DEBUG - printf("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end); + alloc_current = sp_limit = get_boot_sp_limit(sp); + debug ("=> set upper limit to 0x%08lx\n", sp_limit); - do_bdinfo(NULL, 0, 0, NULL); -#endif + /* allocate space and init command line */ + alloc_current = get_boot_cmdline (alloc_current, &cmd_start, &cmd_end); - if ((s = getenv("clocks_in_mhz")) != NULL) { - /* convert all clock information to MHz */ - kbd->bi_intfreq /= 1000000L; - kbd->bi_busfreq /= 1000000L; - } + /* allocate space for kernel copy of board info */ + alloc_current = get_boot_kbd (alloc_current, &kbd); + set_clocks_in_mhz(kbd); /* find kernel */ kernel = @@ -115,13 +87,14 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, IH_ARCH_M68K, &rd_data_start, &rd_data_end); rd_len = rd_data_end - rd_data_start; - ramdisk_high (rd_data_start, rd_len, kdb, sp_limit, get_sp (), + alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len, + kbd, sp_limit, get_sp (), &initrd_start, &initrd_end); debug("## Transferring control to Linux (at address %08lx) ...\n", (ulong) kernel); - SHOW_BOOT_PROGRESS(15); + show_boot_progress (15); /* * Linux Kernel Parameters (passing board info data): @@ -144,3 +117,14 @@ 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; + } +} |