/* * 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) */ #define DEBUG #include <linux/kernel.h> #include <linux/init.h> #include <linux/string.h> #include <linux/console.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)) static int *(*__prom_putchar)(int) = (int *(*)(int))PROM_ENTRY(PROM_PUTCHAR); void prom_putchar(char c) { __prom_putchar(c); } 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 __init prom_free_prom_memory(void) { } /* * /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; pr_debug("SNI IDProm dump:\n"); for (i = 0; i < 256; i++) { if (i%16 == 0) pr_debug("%04x ", i); printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i)); if (i % 16 == 15) printk("\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; pr_debug("IDProm memsize: %lu MByte\n", memsize); /* get memory bank layout from prom */ __prom_get_memconf(&memconf); pr_debug("prom_get_mem_conf memory configuration:\n"); for (i = 0;i < 8 && memconf[i].size; i++) { if (sni_brd_type == SNI_BRD_PCI_TOWER || sni_brd_type == SNI_BRD_PCI_TOWER_CPLUS) { if (memconf[i].base >= 0x20000000 && memconf[i].base < 0x30000000) { memconf[i].base -= 0x20000000; } } pr_debug("Bank%d: %08x @ %08x\n", i, memconf[i].size, memconf[i].base); add_memory_region(memconf[i].base, memconf[i].size, BOOT_MEM_RAM); } } static void __init sni_console_setup(void) { char *ctype; char *cdev; char *baud; int port; static char options[8]; cdev = prom_getenv ("console_dev"); if (strncmp (cdev, "tty", 3) == 0) { ctype = prom_getenv ("console"); switch (*ctype) { default: case 'l': port = 0; baud = prom_getenv("lbaud"); break; case 'r': port = 1; baud = prom_getenv("rbaud"); break; } if (baud) strcpy(options, baud); add_preferred_console("ttyS", port, baud ? options : NULL); } } void __init prom_init(void) { int argc = fw_arg0; char **argv = (void *)fw_arg1; int i; int cputype; sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE; cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE; switch (sni_brd_type) { case SNI_BRD_TOWER_OASIC: switch (cputype) { case SNI_CPU_M8030: systype = "RM400-330"; break; case SNI_CPU_M8031: systype = "RM400-430"; break; case SNI_CPU_M8037: systype = "RM400-530"; break; case SNI_CPU_M8034: systype = "RM400-730"; break; default: systype = "RM400-xxx"; break; } break; case SNI_BRD_MINITOWER: switch (cputype) { case SNI_CPU_M8021: case SNI_CPU_M8043: systype = "RM400-120"; break; case SNI_CPU_M8040: systype = "RM400-220"; break; case SNI_CPU_M8053: systype = "RM400-225"; break; case SNI_CPU_M8050: systype = "RM400-420"; break; default: systype = "RM400-xxx"; break; } break; case SNI_BRD_PCI_TOWER: systype = "RM400-Cxx"; break; case SNI_BRD_RM200: systype = "RM200-xxx"; break; case SNI_BRD_PCI_MTOWER: systype = "RM300-Cxx"; break; case SNI_BRD_PCI_DESKTOP: switch (read_c0_prid() & 0xff00) { case PRID_IMP_R4600: case PRID_IMP_R4700: systype = "RM200-C20"; break; case PRID_IMP_R5000: systype = "RM200-C40"; break; default: systype = "RM200-Cxx"; break; } break; case SNI_BRD_PCI_TOWER_CPLUS: systype = "RM400-Exx"; break; case SNI_BRD_PCI_MTOWER_CPLUS: systype = "RM300-Exx"; break; } pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type,systype); #ifdef DEBUG sni_idprom_dump(); #endif sni_mem_init(); sni_console_setup(); /* 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, " "); } }