diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.8/024-MIPS-BCM63XX-rework-chip-detection.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.8/024-MIPS-BCM63XX-rework-chip-detection.patch | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/target/linux/brcm63xx/patches-3.8/024-MIPS-BCM63XX-rework-chip-detection.patch b/target/linux/brcm63xx/patches-3.8/024-MIPS-BCM63XX-rework-chip-detection.patch deleted file mode 100644 index 0ff9edf74b..0000000000 --- a/target/linux/brcm63xx/patches-3.8/024-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 = ¤t_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(); |