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authorflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-03-29 22:21:22 +0000
committerflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-03-29 22:21:22 +0000
commit8194aa23ac6468aa2ebb3f0655e50f8723a63b7e (patch)
tree2b8fadd0e48d77019fc5868f15764e05120a5b95 /target/linux/adm5120-2.6/files/arch
parentf69503b99e9a1b377bf50bf94c800cbdaf021cf2 (diff)
Add definitions, add settings detection for SoCs
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6759 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/adm5120-2.6/files/arch')
-rw-r--r--target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c80
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 85e0df622..e3a3c805a 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();
}