diff options
Diffstat (limited to 'arch/mips/sni')
| -rw-r--r-- | arch/mips/sni/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/sni/setup.c | 7 | ||||
| -rw-r--r-- | arch/mips/sni/sniprom.c | 158 |
3 files changed, 163 insertions, 3 deletions
diff --git a/arch/mips/sni/Makefile b/arch/mips/sni/Makefile index 9c7eaa5fb21..a5eb0adb87c 100644 --- a/arch/mips/sni/Makefile +++ b/arch/mips/sni/Makefile @@ -3,5 +3,6 @@ # obj-y += irq.o pcimt_scache.o reset.o setup.o +obj-$(CONFIG_CPU_BIG_ENDIAN) += sniprom.o EXTRA_AFLAGS := $(CFLAGS) diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c index 635b904cabd..a050bb6ae70 100644 --- a/arch/mips/sni/setup.c +++ b/arch/mips/sni/setup.c @@ -21,8 +21,11 @@ #include <linux/fb.h> #include <linux/tty.h> +#ifdef CONFIG_ARC #include <asm/arc/types.h> #include <asm/sgialib.h> +#endif + #include <asm/bcache.h> #include <asm/bootinfo.h> #include <asm/io.h> @@ -72,8 +75,7 @@ static inline void sni_pcimt_detect(void) static void __init sni_display_setup(void) { -#ifdef CONFIG_VT -#if defined(CONFIG_VGA_CONSOLE) +#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_ARC) struct screen_info *si = &screen_info; DISPLAY_STATUS *di; @@ -88,7 +90,6 @@ static void __init sni_display_setup(void) si->orig_video_points = 16; } #endif -#endif } static struct resource sni_io_resource = { diff --git a/arch/mips/sni/sniprom.c b/arch/mips/sni/sniprom.c new file mode 100644 index 00000000000..d1d0f1f493b --- /dev/null +++ b/arch/mips/sni/sniprom.c @@ -0,0 +1,158 @@ +/* + * Big Endian PROM code for SNI RM machines + * + * 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. + * + * Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org) + * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de) + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/string.h> + +#include <asm/addrspace.h> +#include <asm/sni.h> +#include <asm/mipsprom.h> +#include <asm/bootinfo.h> + +/* special SNI prom calls */ +/* + * This does not exist in all proms - SINIX compares + * the prom env variable "version" against "2.0008" + * or greater. If lesser it tries to probe interesting + * registers + */ +#define PROM_GET_MEMCONF 58 + +#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000) +#define PROM_ENTRY(x) (PROM_VEC + (x)) + + +#undef DEBUG +#ifdef DEBUG +#define DBG_PRINTF(x...) prom_printf(x) +#else +#define DBG_PRINTF(x...) +#endif + +static int *(*__prom_putchar)(int) = (int *(*)(int))PROM_ENTRY(PROM_PUTCHAR); +static char *(*__prom_getenv)(char *) = (char *(*)(char *))PROM_ENTRY(PROM_GETENV); +static void (*__prom_get_memconf)(void *) = (void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF); + +char *prom_getenv (char *s) +{ + return __prom_getenv(s); +} + +void prom_printf(char *fmt, ...) +{ + va_list args; + char ppbuf[1024]; + char *bptr; + + va_start(args, fmt); + vsprintf(ppbuf, fmt, args); + + bptr = ppbuf; + + while (*bptr != 0) { + if (*bptr == '\n') + __prom_putchar('\r'); + + __prom_putchar(*bptr++); + } + va_end(args); +} + +unsigned long prom_free_prom_memory(void) +{ + return 0; +} + +/* + * /proc/cpuinfo system type + * + */ +static const char *systype = "Unknown"; +const char *get_system_type(void) +{ + return systype; +} + +#define SNI_IDPROM_BASE 0xbff00000 +#define SNI_IDPROM_MEMSIZE (SNI_IDPROM_BASE+0x28) /* Memsize in 16MB quantities */ +#define SNI_IDPROM_BRDTYPE (SNI_IDPROM_BASE+0x29) /* Board Type */ +#define SNI_IDPROM_CPUTYPE (SNI_IDPROM_BASE+0x30) /* CPU Type */ + +#define SNI_IDPROM_SIZE 0x1000 + +#ifdef DEBUG +static void sni_idprom_dump(void) +{ + int i; + + prom_printf("SNI IDProm dump (first 128byte):\n"); + for(i=0;i<128;i++) { + if (i%16 == 0) + prom_printf("%04x ", i); + + prom_printf("%02x ", *(unsigned char *) (SNI_IDPROM_BASE+i)); + + if (i%16 == 15) + prom_printf("\n"); + } +} +#endif + +static void sni_mem_init(void ) +{ + int i, memsize; + struct membank { + u32 size; + u32 base; + u32 size2; + u32 pad1; + u32 pad2; + } memconf[8]; + + /* MemSIZE from prom in 16MByte chunks */ + memsize=*((unsigned char *) SNI_IDPROM_MEMSIZE) * 16; + + DBG_PRINTF("IDProm memsize: %lu MByte\n", memsize); + + /* get memory bank layout from prom */ + __prom_get_memconf(&memconf); + + DBG_PRINTF("prom_get_mem_conf memory configuration:\n"); + for(i=0;i<8 && memconf[i].size;i++) { + prom_printf("Bank%d: %08x @ %08x\n", i, + memconf[i].size, memconf[i].base); + add_memory_region(memconf[i].base, memconf[i].size, BOOT_MEM_RAM); + } +} + +void __init prom_init(void) +{ + int argc = fw_arg0; + char **argv = (void *)fw_arg1; + unsigned int sni_brd_type = *(unsigned char *) SNI_IDPROM_BRDTYPE; + int i; + + DBG_PRINTF("Found SNI brdtype %02x\n", sni_brd_type); + +#ifdef DEBUG + sni_idprom_dump(); +#endif + sni_mem_init(); + + /* copy prom cmdline parameters to kernel cmdline */ + for (i = 1; i < argc; i++) { + strcat(arcs_cmdline, argv[i]); + if (i < (argc - 1)) + strcat(arcs_cmdline, " "); + } +} + |