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authorPrafulla Wadaskar <[prafulla@marvell.com]>2010-09-20 17:19:42 +0530
committerWolfgang Denk <wd@denx.de>2010-10-13 09:35:58 +0200
commitc0cd02073da1ec0737d45b2e60aac53201209b30 (patch)
tree1c073a2e54074dd8f2bb3e4ef38c55f15cc6040c /arch
parentd3497138ff352841da3573c7aa9df993c4afd136 (diff)
downloadu-boot-linaro-stable-c0cd02073da1ec0737d45b2e60aac53201209b30.tar.gz
Kirkwood: print_cpuinfo fixed for valid devid revid
Earlier Device Identification register was used to detect the type for SoC, considering 88F6282 support to be added, It is not possible to detect the same using current algorithm. With this patch, device ID is being read using PCIE devid register, also valid chip revision ID will also be read and displayed Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/arm926ejs/kirkwood/cpu.c34
-rw-r--r--arch/arm/include/asm/arch-kirkwood/cpu.h2
2 files changed, 25 insertions, 11 deletions
diff --git a/arch/arm/cpu/arm926ejs/kirkwood/cpu.c b/arch/arm/cpu/arm926ejs/kirkwood/cpu.c
index 82c978bd9..b4a4c0428 100644
--- a/arch/arm/cpu/arm926ejs/kirkwood/cpu.c
+++ b/arch/arm/cpu/arm926ejs/kirkwood/cpu.c
@@ -54,10 +54,11 @@ unsigned char get_random_hex(void)
u8 outbuf[BUFLEN];
/*
- * in case of 88F6281/88F6192 A0,
+ * in case of 88F6281/88F6282/88F6192 A0,
* Bit7 need to reset to generate random values in KW_REG_UNDOC_0x1470
- * Soc reg offsets KW_REG_UNDOC_0x1470 and KW_REG_UNDOC_0x1478 are reserved regs and
- * Does not have names at this moment (no errata available)
+ * Soc reg offsets KW_REG_UNDOC_0x1470 and KW_REG_UNDOC_0x1478 are
+ * reserved regs and does not have names at this moment
+ * (no errata available)
*/
writel(readl(KW_REG_UNDOC_0x1478) & ~(1 << 7), KW_REG_UNDOC_0x1478);
for (i = 0; i < BUFLEN; i++) {
@@ -271,20 +272,31 @@ static void kw_sysrst_check(void)
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
- char *name = "Unknown";
+ char *rev;
+ u16 devid = (readl(KW_REG_PCIE_DEVID) >> 16) & 0xffff;
+ u8 revid = readl(KW_REG_PCIE_REVID) & 0xff;
- switch (readl(KW_REG_DEVICE_ID) & 0x03) {
- case 1:
- name = "88F6192_A0";
+ if ((readl(KW_REG_DEVICE_ID) & 0x03) > 2) {
+ printf("Error.. %s:Unsupported Kirkwood SoC 88F%04x\n", __FUNCTION__, devid);
+ return -1;
+ }
+
+ switch (revid) {
+ case 0:
+ rev = "Z0";
break;
case 2:
- name = "88F6281_A0";
+ rev = "A0";
+ break;
+ case 3:
+ rev = "A1";
break;
default:
- printf("SoC: Unsupported Kirkwood\n");
- return -1;
+ rev = "??";
+ break;
}
- printf("SoC: Kirkwood %s\n", name);
+
+ printf("SoC: Kirkwood 88F%04x_%s\n", devid, rev);
return 0;
}
#endif /* CONFIG_DISPLAY_CPUINFO */
diff --git a/arch/arm/include/asm/arch-kirkwood/cpu.h b/arch/arm/include/asm/arch-kirkwood/cpu.h
index b3022a378..d28c51a9b 100644
--- a/arch/arm/include/asm/arch-kirkwood/cpu.h
+++ b/arch/arm/include/asm/arch-kirkwood/cpu.h
@@ -35,6 +35,8 @@
#define KWGBE_PORT_SERIAL_CONTROL1_REG(_x) \
((_x ? KW_EGIGA0_BASE : KW_EGIGA1_BASE) + 0x44c)
+#define KW_REG_PCIE_DEVID (KW_REG_PCIE_BASE + 0x00)
+#define KW_REG_PCIE_REVID (KW_REG_PCIE_BASE + 0x08)
#define KW_REG_DEVICE_ID (KW_MPP_BASE + 0x34)
#define KW_REG_SYSRST_CNT (KW_MPP_BASE + 0x50)
#define SYSRST_CNT_1SEC_VAL (25*1000000)