diff options
Diffstat (limited to 'target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c')
-rw-r--r-- | target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c new file mode 100644 index 0000000..24b77f8 --- /dev/null +++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> + * + * based on work of rb532 prom.c + * Copyright (C) 2003, Peter Sadik <peter.sadik@idt.com> + * Copyright (C) 2005-2006, P.Christeas <p_christ@hol.gr> + * Copyright (C) 2007, Gabor Juhos <juhosg@openwrt.org> + * Felix Fietkau <nbd@openwrt.org> + * Florian Fainelli <florian@openwrt.org> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/console.h> +#include <linux/string.h> +#include <linux/serial_core.h> +#include <asm/bootinfo.h> +#include <adm8668.h> +#include "u-boot.h" + +register volatile struct global_data *gd asm ("k0"); + +void __init prom_free_prom_memory(void) +{ + /* No prom memory to free */ +} + +static inline int match_tag(char *arg, const char *tag) +{ + return strncmp(arg, tag, strlen(tag)) == 0; +} + +static inline unsigned long tag2ul(char *arg, const char *tag) +{ + char *num; + + num = arg + strlen(tag); + return simple_strtoul(num, 0, 10); +} + +void __init prom_setup_cmdline(void) +{ + char *cp; + int prom_argc; + char **prom_argv; + int i; + + prom_argc = fw_arg0; + prom_argv = (char **)KSEG0ADDR(fw_arg1); + + cp = &(arcs_cmdline[0]); + for (i = 1; i < prom_argc; i++) { + prom_argv[i] = (char *)KSEG0ADDR(prom_argv[i]); + + /* default bootargs has "console=/dev/ttyS0" yet console won't + * show up at all if you include the '/dev/' nowadays ... */ + if (match_tag(prom_argv[i], "console=/dev/")) { + char *ptr = prom_argv[i] + strlen("console=/dev/"); + + strcpy(cp, "console="); + cp += strlen("console="); + strcpy(cp, ptr); + cp += strlen(ptr); + *cp++ = ' '; + continue; + } + strcpy(cp, prom_argv[i]); + cp += strlen(prom_argv[i]); + *cp++ = ' '; + } + if (prom_argc > 1) + --cp; /* trailing space */ + + *cp = '\0'; +} + +void __init prom_init(void) +{ + bd_t *bd = gd->bd; + int memsize; + + memsize = bd->bi_memsize; + printk("Board info:\n"); + printk(" RAM size: %d MB\n", (int)memsize/(1024*1024)); + printk(" NOR start: %#lx\n", bd->bi_flashstart); + printk(" NOR size: %#lx\n", bd->bi_flashsize); + + prom_setup_cmdline(); + add_memory_region(0, memsize, BOOT_MEM_RAM); +} |