summaryrefslogtreecommitdiff
path: root/target/linux/brcm63xx/patches-3.9/024-MIPS-BCM63XX-rework-chip-detection.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/brcm63xx/patches-3.9/024-MIPS-BCM63XX-rework-chip-detection.patch')
-rw-r--r--target/linux/brcm63xx/patches-3.9/024-MIPS-BCM63XX-rework-chip-detection.patch133
1 files changed, 0 insertions, 133 deletions
diff --git a/target/linux/brcm63xx/patches-3.9/024-MIPS-BCM63XX-rework-chip-detection.patch b/target/linux/brcm63xx/patches-3.9/024-MIPS-BCM63XX-rework-chip-detection.patch
deleted file mode 100644
index 0ff9edf74b..0000000000
--- a/target/linux/brcm63xx/patches-3.9/024-MIPS-BCM63XX-rework-chip-detection.patch
+++ /dev/null
@@ -1,133 +0,0 @@
-From 3f4570c9794fcae1cf62fbf3266a2e23edac67a5 Mon Sep 17 00:00:00 2001
-From: Jonas Gorski <jogo@openwrt.org>
-Date: Wed, 27 Jun 2012 15:01:09 +0200
-Subject: [PATCH 3/7] MIPS: BCM63XX: rework chip detection
-
-Instead of trying to use a correlation of cpu prid and chip id and
-hoping they will always be unique, use the cpu prid to determine the
-chip id register location and just read out the chip id.
-
-Signed-off-by: Jonas Gorski <jogo@openwrt.org>
----
- arch/mips/bcm63xx/cpu.c | 87 +++++++++++++++++++++++------------------------
- 1 file changed, 42 insertions(+), 45 deletions(-)
-
---- a/arch/mips/bcm63xx/cpu.c
-+++ b/arch/mips/bcm63xx/cpu.c
-@@ -240,53 +240,27 @@ static unsigned int detect_memory_size(v
-
- void __init bcm63xx_cpu_init(void)
- {
-- unsigned int tmp, expected_cpu_id;
-+ unsigned int tmp;
- struct cpuinfo_mips *c = &current_cpu_data;
- unsigned int cpu = smp_processor_id();
-+ u32 chipid_reg;
-
- /* soc registers location depends on cpu type */
-- expected_cpu_id = 0;
-+ chipid_reg = 0;
-
- switch (c->cputype) {
- case CPU_BMIPS3300:
-- if ((read_c0_prid() & 0xff00) == PRID_IMP_BMIPS3300_ALT) {
-- expected_cpu_id = BCM6348_CPU_ID;
-- bcm63xx_regs_base = bcm6348_regs_base;
-- bcm63xx_irqs = bcm6348_irqs;
-- } else {
-+ if ((read_c0_prid() & 0xff00) != PRID_IMP_BMIPS3300_ALT)
- __cpu_name[cpu] = "Broadcom BCM6338";
-- expected_cpu_id = BCM6338_CPU_ID;
-- bcm63xx_regs_base = bcm6338_regs_base;
-- bcm63xx_irqs = bcm6338_irqs;
-- }
-- break;
-+ /* fall-through */
- case CPU_BMIPS32:
-- expected_cpu_id = BCM6345_CPU_ID;
-- bcm63xx_regs_base = bcm6345_regs_base;
-- bcm63xx_irqs = bcm6345_irqs;
-+ chipid_reg = BCM_6345_PERF_BASE;
- break;
- case CPU_BMIPS4350:
-- if ((read_c0_prid() & 0xf0) == 0x10) {
-- expected_cpu_id = BCM6358_CPU_ID;
-- bcm63xx_regs_base = bcm6358_regs_base;
-- bcm63xx_irqs = bcm6358_irqs;
-- } else {
-- /* all newer chips have the same chip id location */
-- u16 chip_id = bcm_readw(BCM_6368_PERF_BASE);
--
-- switch (chip_id) {
-- case BCM6328_CPU_ID:
-- expected_cpu_id = BCM6328_CPU_ID;
-- bcm63xx_regs_base = bcm6328_regs_base;
-- bcm63xx_irqs = bcm6328_irqs;
-- break;
-- case BCM6368_CPU_ID:
-- expected_cpu_id = BCM6368_CPU_ID;
-- bcm63xx_regs_base = bcm6368_regs_base;
-- bcm63xx_irqs = bcm6368_irqs;
-- break;
-- }
-- }
-+ if ((read_c0_prid() & 0xf0) == 0x10)
-+ chipid_reg = BCM_6345_PERF_BASE;
-+ else
-+ chipid_reg = BCM_6368_PERF_BASE;
- break;
- }
-
-@@ -294,20 +268,43 @@ void __init bcm63xx_cpu_init(void)
- * really early to panic, but delaying panic would not help since we
- * will never get any working console
- */
-- if (!expected_cpu_id)
-+ if (!chipid_reg)
- panic("unsupported Broadcom CPU");
-
-- /*
-- * bcm63xx_regs_base is set, we can access soc registers
-- */
--
-- /* double check CPU type */
-- tmp = bcm_perf_readl(PERF_REV_REG);
-+ /* read out CPU type */
-+ tmp = bcm_readl(chipid_reg);
- bcm63xx_cpu_id = (tmp & REV_CHIPID_MASK) >> REV_CHIPID_SHIFT;
- bcm63xx_cpu_rev = (tmp & REV_REVID_MASK) >> REV_REVID_SHIFT;
-
-- if (bcm63xx_cpu_id != expected_cpu_id)
-- panic("bcm63xx CPU id mismatch");
-+ switch (bcm63xx_cpu_id) {
-+ case BCM6328_CPU_ID:
-+ bcm63xx_regs_base = bcm6328_regs_base;
-+ bcm63xx_irqs = bcm6328_irqs;
-+ break;
-+ case BCM6338_CPU_ID:
-+ bcm63xx_regs_base = bcm6338_regs_base;
-+ bcm63xx_irqs = bcm6338_irqs;
-+ break;
-+ case BCM6345_CPU_ID:
-+ bcm63xx_regs_base = bcm6345_regs_base;
-+ bcm63xx_irqs = bcm6345_irqs;
-+ break;
-+ case BCM6348_CPU_ID:
-+ bcm63xx_regs_base = bcm6348_regs_base;
-+ bcm63xx_irqs = bcm6348_irqs;
-+ break;
-+ case BCM6358_CPU_ID:
-+ bcm63xx_regs_base = bcm6358_regs_base;
-+ bcm63xx_irqs = bcm6358_irqs;
-+ break;
-+ case BCM6368_CPU_ID:
-+ bcm63xx_regs_base = bcm6368_regs_base;
-+ bcm63xx_irqs = bcm6368_irqs;
-+ break;
-+ default:
-+ panic("unsupported broadcom CPU %x", bcm63xx_cpu_id);
-+ break;
-+ }
-
- bcm63xx_cpu_freq = detect_cpu_clock();
- bcm63xx_memory_size = detect_memory_size();