You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1.4 KiB
47 lines
1.4 KiB
From d831de57b1995eff51f43310b4bbfa85b1a3df42 Mon Sep 17 00:00:00 2001
|
|
From: Jonas Gorski <jonas.gorski@gmail.com>
|
|
Date: Fri, 30 Dec 2011 02:37:47 +0100
|
|
Subject: [PATCH 38/79] MIPS: BCM63XX: use the Chip ID register for
|
|
identifying the SoC
|
|
|
|
Newer BCM63XX SoCs use virtually the same cpu ID. But since they all have
|
|
the Chip ID register at the same location, we can use that to identify
|
|
the SoC we are running on.
|
|
|
|
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
|
|
---
|
|
arch/mips/bcm63xx/cpu.c | 20 ++++++++++++--------
|
|
1 file changed, 12 insertions(+), 8 deletions(-)
|
|
|
|
--- a/arch/mips/bcm63xx/cpu.c
|
|
+++ b/arch/mips/bcm63xx/cpu.c
|
|
@@ -228,17 +228,21 @@ void __init bcm63xx_cpu_init(void)
|
|
bcm63xx_irqs = bcm6345_irqs;
|
|
break;
|
|
case CPU_BMIPS4350:
|
|
- switch (read_c0_prid() & 0xf0) {
|
|
- case 0x10:
|
|
+ if ((read_c0_prid() & 0xf0) == 0x10) {
|
|
expected_cpu_id = BCM6358_CPU_ID;
|
|
bcm63xx_regs_base = bcm6358_regs_base;
|
|
bcm63xx_irqs = bcm6358_irqs;
|
|
- break;
|
|
- case 0x30:
|
|
- expected_cpu_id = BCM6368_CPU_ID;
|
|
- bcm63xx_regs_base = bcm6368_regs_base;
|
|
- bcm63xx_irqs = bcm6368_irqs;
|
|
- break;
|
|
+ } else {
|
|
+ /* all newer chips have the same chip id location */
|
|
+ u16 chip_id = bcm_readw(BCM_6368_PERF_BASE);
|
|
+
|
|
+ switch (chip_id) {
|
|
+ case BCM6368_CPU_ID:
|
|
+ expected_cpu_id = BCM6368_CPU_ID;
|
|
+ bcm63xx_regs_base = bcm6368_regs_base;
|
|
+ bcm63xx_irqs = bcm6368_irqs;
|
|
+ break;
|
|
+ }
|
|
}
|
|
break;
|
|
}
|
|
|