diff options
Diffstat (limited to 'target/linux/ifxmips/files/arch/mips/ifxmips/prom.c')
| -rw-r--r-- | target/linux/ifxmips/files/arch/mips/ifxmips/prom.c | 96 |
1 files changed, 54 insertions, 42 deletions
diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c b/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c index 880febc62..ef8750b6f 100644 --- a/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c +++ b/target/linux/ifxmips/files/arch/mips/ifxmips/prom.c @@ -14,7 +14,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. * * Copyright (C) 2005 Wu Qi Ming infineon - * Copyright (C) 2007 John Crispin <blogic@openwrt.org> + * Copyright (C) 2007 John Crispin <blogic@openwrt.org> */ #include <linux/init.h> @@ -23,49 +23,49 @@ #include <asm/bootinfo.h> #include <asm/ifxmips/ifxmips.h> -static char buf[1024]; +static char buf[1024]; /* for prom_printf() */ + +/* for voice cpu (MIPS24K) */ unsigned int *prom_cp1_base = NULL; unsigned int prom_cp1_size = 0; +/* for Multithreading (APRP) on MIPS34K */ +unsigned long physical_memsize = 0L; + #ifdef IFXMIPS_PROM_ASC0 #define IFXMIPS_ASC_DIFF 0 #else #define IFXMIPS_ASC_DIFF IFXMIPS_ASC_BASE_DIFF #endif -static inline u32 -asc_r32(unsigned long r) +static inline u32 asc_r32(unsigned long r) { - return ifxmips_r32((u32*)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r)); + return ifxmips_r32((u32 *)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r)); } -static inline void -asc_w32(u32 v, unsigned long r) +static inline void asc_w32(u32 v, unsigned long r) { - ifxmips_w32(v, (u32*)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r)); + ifxmips_w32(v, (u32 *)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r)); } -void -prom_free_prom_memory(void) +void prom_free_prom_memory(void) { } -void -prom_putchar(char c) +void prom_putchar(char c) { unsigned long flags; local_irq_save(flags); while((asc_r32(IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF); - if(c == '\n') + if (c == '\n') asc_w32('\r', IFXMIPS_ASC_TBUF); asc_w32(c, IFXMIPS_ASC_TBUF); local_irq_restore(flags); } -void -prom_printf(const char * fmt, ...) +void prom_printf(const char *fmt, ...) { va_list args; int l; @@ -76,7 +76,7 @@ prom_printf(const char * fmt, ...) va_end(args); buf_end = buf + l; - for(p = buf; p < buf_end; p++) + for (p = buf; p < buf_end; p++) prom_putchar(*p); } @@ -88,41 +88,53 @@ EXPORT_SYMBOL(prom_get_cp1_base); unsigned int prom_get_cp1_size(void) { - return prom_cp1_size; + /* return size im MB */ + return prom_cp1_size>>20; } EXPORT_SYMBOL(prom_get_cp1_size); -void __init -prom_init(void) +void __init prom_init(void) { int argc = fw_arg0; char **argv = (char **) fw_arg1; char **envp = (char **) fw_arg2; - int memsize = 16; + int memsize = 16; /* assume 16M as default */ int i; mips_machtype = MACH_INFINEON_IFXMIPS; - argv = (char**)KSEG1ADDR((unsigned long)argv); - arcs_cmdline[0] = '\0'; - for(i = 1; i < argc; i++) - { - char *a = (char*)KSEG1ADDR(argv[i]); - if(!a) - continue; - if(strlen(arcs_cmdline) + strlen(a + 1) >= sizeof(arcs_cmdline)) - break; - strcat(arcs_cmdline, a); - strcat(arcs_cmdline, " "); + if (argc) { + argv = (char**)KSEG1ADDR((unsigned long)argv); + arcs_cmdline[0] = '\0'; + for (i = 1; i < argc; i++) + { + char *a = (char *)KSEG1ADDR(argv[i]); + if (!argv[i]) + continue; + /* for voice cpu on Twinpass/Danube */ + if (cpu_data[0].cputype == CPU_24K) + if (!strncmp(a, "cp1_size=", 9)) { + prom_cp1_size = memparse(a + 9, &a); + continue; + } + if (strlen(arcs_cmdline) + strlen(a + 1) >= sizeof(arcs_cmdline)) { + prom_printf("cmdline overflow, skipping: %s\n", a); + break; + } + strcat(arcs_cmdline, a); + strcat(arcs_cmdline, " "); + } + if (!*arcs_cmdline) + strcpy(&(arcs_cmdline[0]), + "console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit"); } - envp = (char**)KSEG1ADDR((unsigned long)envp); while(*envp) { - char *e = (char*)KSEG1ADDR(*envp); + char *e = (char *)KSEG1ADDR(*envp); - if(!strncmp(e, "memsize=", 8)) + if (!strncmp(e, "memsize=", 8)) { e += 8; memsize = simple_strtoul(e, NULL, 10); @@ -130,16 +142,16 @@ prom_init(void) envp++; } - prom_cp1_size = 2; - memsize -= prom_cp1_size; - prom_cp1_base = (unsigned int*)(0xA0000000 + (memsize * 1024 * 1024)); - - prom_printf("Using %dMB Ram and reserving %dMB for cp1\n", memsize, prom_cp1_size); memsize *= 1024 * 1024; - if(!*arcs_cmdline) - strcpy(&(arcs_cmdline[0]), - "console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit"); + /* only on Twinpass/Danube a second CPU is used for Voice */ + if ((cpu_data[0].cputype == CPU_24K) && (prom_cp1_size)) { + memsize -= prom_cp1_size; + prom_cp1_base = (unsigned int*)KSEG1ADDR(memsize); + + prom_printf("Using %dMB Ram and reserving %dMB for cp1\n", + memsize>>20, prom_cp1_size>>20); + } add_memory_region(0x00000000, memsize, BOOT_MEM_RAM); } |