diff options
Diffstat (limited to 'target/linux/adm5120-2.6/files/arch')
-rw-r--r-- | target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c | 80 |
1 files changed, 68 insertions, 12 deletions
diff --git a/target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c b/target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c index 85e0df622b..e3a3c805a8 100644 --- a/target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c +++ b/target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c @@ -1,7 +1,9 @@ /* + * $Id$ + * * Copyright (C) 2007 OpenWrt.org - * Copyright (C) Gabor Juhos - * + * Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu> + * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your @@ -17,12 +19,13 @@ #include <asm/addrspace.h> #include <adm5120_info.h> +#include <adm5120_defs.h> +#include <adm5120_switch.h> #include <myloader.h> /* boot loaders specific definitions */ #define CFE_EPTSEAL 0x43464531 /* CFE1 is the magic number to recognize CFE from other bootloaders */ - struct adm5120_info adm5120_info = { .cpu_speed = CPU_SPEED_175, .cpu_package = CPU_PACKAGE_PQFP, @@ -38,6 +41,42 @@ static char *boot_loader_names[BOOT_LOADER_LAST+1] = { }; /* + * CPU settings detection + */ +#define CODE_GET_PC(c) ((c) & CODE_PC_MASK) +#define CODE_GET_REV(c) (((c) >> CODE_REV_SHIFT) & CODE_REV_MASK) +#define CODE_GET_PK(c) (((c) >> CODE_PK_SHIFT) & CODE_PK_MASK) +#define CODE_GET_CLKS(c) (((c) >> CODE_CLKS_SHIFT) & CODE_CLKS_MASK) +#define CODE_GET_NAB(c) (((c) & CODE_NAB) != 0) + +static void __init detect_cpu_info(void) +{ + uint32_t *reg; + uint32_t code; + uint32_t clks; + + reg = (uint32_t *)KSEG1ADDR(ADM5120_SWITCH_BASE+SWITCH_REG_CODE); + code = *reg; + + clks = CODE_GET_CLKS(code); + + adm5120_info.product_code = CODE_GET_PC(code); + adm5120_info.revision = CODE_GET_REV(code); + + adm5120_info.cpu_speed = CPU_SPEED_175; + if (clks & 1) + adm5120_info.cpu_speed += 25000000; + if (clks & 2) + adm5120_info.cpu_speed += 50000000; + + adm5120_info.cpu_package = (CODE_GET_PK(code) == CODE_PK_BGA) ? + CPU_PACKAGE_BGA : CPU_PACKAGE_PQFP; + + adm5120_info.nand_boot = CODE_GET_NAB(code); + +} + +/* * Boot loader detection routines */ static int __init detect_cfe(void) @@ -55,12 +94,12 @@ static int __init detect_cfe(void) /* We are not booted from CFE */ return 0; } - + /* cfe_a1_val must be 0, because only one CPU present in the ADM5120 SoC */ if (cfe_a1_val != 0) { return 0; } - + /* The cfe_handle, and the cfe_entry must be kernel mode addresses */ if ((cfe_handle < KSEG0) || (cfe_entry < KSEG0)) { return 0; @@ -86,7 +125,7 @@ static int __init detect_myloader(void) parts = (struct mylo_partition_table *)(MYLO_MIPS_PARTITIONS); /* Check for some magic numbers */ - if ((sysp->magic != MYLO_MAGIC_SYS_PARAMS) || + if ((sysp->magic != MYLO_MAGIC_SYS_PARAMS) || (boardp->magic != MYLO_MAGIC_BOARD_PARAMS) || (parts->magic != MYLO_MAGIC_PARTITIONS)) return 0; @@ -98,24 +137,41 @@ static int __init detect_bootloader(void) { if (detect_cfe()) return BOOT_LOADER_CFE; - - if (detect_uboot()) + + if (detect_uboot()) return BOOT_LOADER_UBOOT; - + if (detect_myloader()) return BOOT_LOADER_MYLOADER; - + return BOOT_LOADER_UNKNOWN; } +/* + * Board detection + */ +static void __init detect_board_type(void) +{ + /* FIXME: not yet implemented */ +} + void __init adm5120_info_show(void) { - printk("adm5120: boot loader is %s\n", boot_loader_names[adm5120_info.boot_loader]); + printk("ADM%04X%s revision %d, running at %ldMHz\n", + adm5120_info.product_code, + (adm5120_info.cpu_package == CPU_PACKAGE_BGA) ? "" : "P", + adm5120_info.revision, + (adm5120_info.cpu_speed / 1000000) + ); + printk("Boot loader is: %s\n", boot_loader_names[adm5120_info.boot_loader]); + printk("Booted from : %s flash\n", adm5120_info.nand_boot ? "NAND" : "NOR"); } void __init adm5120_info_init(void) { + detect_cpu_info(); adm5120_info.boot_loader = detect_bootloader(); - + detect_board_type(); + adm5120_info_show(); } |