diff options
Diffstat (limited to 'arch/blackfin/mach-common/irqpanic.c')
| -rw-r--r-- | arch/blackfin/mach-common/irqpanic.c | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/arch/blackfin/mach-common/irqpanic.c b/arch/blackfin/mach-common/irqpanic.c deleted file mode 100644 index c6496249e2bc..000000000000 --- a/arch/blackfin/mach-common/irqpanic.c +++ /dev/null | |||
| @@ -1,106 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * panic kernel with dump information | ||
| 3 | * | ||
| 4 | * Copyright 2005-2009 Analog Devices Inc. | ||
| 5 | * | ||
| 6 | * Licensed under the GPL-2 or later. | ||
| 7 | */ | ||
| 8 | |||
| 9 | #include <linux/module.h> | ||
| 10 | #include <linux/kernel_stat.h> | ||
| 11 | #include <linux/sched.h> | ||
| 12 | #include <asm/blackfin.h> | ||
| 13 | |||
| 14 | #define L1_ICACHE_START 0xffa10000 | ||
| 15 | #define L1_ICACHE_END 0xffa13fff | ||
| 16 | |||
| 17 | /* | ||
| 18 | * irq_panic - calls panic with string setup | ||
| 19 | */ | ||
| 20 | __attribute__ ((l1_text)) | ||
| 21 | asmlinkage void irq_panic(int reason, struct pt_regs *regs) | ||
| 22 | { | ||
| 23 | unsigned int cmd, tag, ca, cache_hi, cache_lo, *pa; | ||
| 24 | unsigned short i, j, die; | ||
| 25 | unsigned int bad[10][6]; | ||
| 26 | |||
| 27 | /* check entire cache for coherency | ||
| 28 | * Since printk is in cacheable memory, | ||
| 29 | * don't call it until you have checked everything | ||
| 30 | */ | ||
| 31 | |||
| 32 | die = 0; | ||
| 33 | i = 0; | ||
| 34 | |||
| 35 | /* check icache */ | ||
| 36 | |||
| 37 | for (ca = L1_ICACHE_START; ca <= L1_ICACHE_END && i < 10; ca += 32) { | ||
| 38 | |||
| 39 | /* Grab various address bits for the itest_cmd fields */ | ||
| 40 | cmd = (((ca & 0x3000) << 4) | /* ca[13:12] for SBNK[1:0] */ | ||
| 41 | ((ca & 0x0c00) << 16) | /* ca[11:10] for WAYSEL[1:0] */ | ||
| 42 | ((ca & 0x3f8)) | /* ca[09:03] for SET[4:0] and DW[1:0] */ | ||
| 43 | 0); /* Access Tag, Read access */ | ||
| 44 | |||
| 45 | SSYNC(); | ||
| 46 | bfin_write_ITEST_COMMAND(cmd); | ||
| 47 | SSYNC(); | ||
| 48 | tag = bfin_read_ITEST_DATA0(); | ||
| 49 | SSYNC(); | ||
| 50 | |||
| 51 | /* if tag is marked as valid, check it */ | ||
| 52 | if (tag & 1) { | ||
| 53 | /* The icache is arranged in 4 groups of 64-bits */ | ||
| 54 | for (j = 0; j < 32; j += 8) { | ||
| 55 | cmd = ((((ca + j) & 0x3000) << 4) | /* ca[13:12] for SBNK[1:0] */ | ||
| 56 | (((ca + j) & 0x0c00) << 16) | /* ca[11:10] for WAYSEL[1:0] */ | ||
| 57 | (((ca + j) & 0x3f8)) | /* ca[09:03] for SET[4:0] and DW[1:0] */ | ||
| 58 | 4); /* Access Data, Read access */ | ||
| 59 | |||
| 60 | SSYNC(); | ||
| 61 | bfin_write_ITEST_COMMAND(cmd); | ||
| 62 | SSYNC(); | ||
| 63 | |||
| 64 | cache_hi = bfin_read_ITEST_DATA1(); | ||
| 65 | cache_lo = bfin_read_ITEST_DATA0(); | ||
| 66 | |||
| 67 | pa = ((unsigned int *)((tag & 0xffffcc00) | | ||
| 68 | ((ca + j) & ~(0xffffcc00)))); | ||
| 69 | |||
| 70 | /* | ||
| 71 | * Debugging this, enable | ||
| 72 | * | ||
| 73 | * printk("addr: %08x %08x%08x | %08x%08x\n", | ||
| 74 | * ((unsigned int *)((tag & 0xffffcc00) | ((ca+j) & ~(0xffffcc00)))), | ||
| 75 | * cache_hi, cache_lo, *(pa+1), *pa); | ||
| 76 | */ | ||
| 77 | |||
| 78 | if (cache_hi != *(pa + 1) || cache_lo != *pa) { | ||
| 79 | /* Since icache is not working, stay out of it, by not printing */ | ||
| 80 | die = 1; | ||
| 81 | bad[i][0] = (ca + j); | ||
| 82 | bad[i][1] = cache_hi; | ||
| 83 | bad[i][2] = cache_lo; | ||
| 84 | bad[i][3] = ((tag & 0xffffcc00) | | ||
| 85 | ((ca + j) & ~(0xffffcc00))); | ||
| 86 | bad[i][4] = *(pa + 1); | ||
| 87 | bad[i][5] = *(pa); | ||
| 88 | i++; | ||
| 89 | } | ||
| 90 | } | ||
| 91 | } | ||
| 92 | } | ||
| 93 | if (die) { | ||
| 94 | printk(KERN_EMERG "icache coherency error\n"); | ||
| 95 | for (j = 0; j <= i; j++) { | ||
| 96 | printk(KERN_EMERG | ||
| 97 | "cache address : %08x cache value : %08x%08x\n", | ||
| 98 | bad[j][0], bad[j][1], bad[j][2]); | ||
| 99 | printk(KERN_EMERG | ||
| 100 | "physical address: %08x SDRAM value : %08x%08x\n", | ||
| 101 | bad[j][3], bad[j][4], bad[j][5]); | ||
| 102 | } | ||
| 103 | panic("icache coherency error"); | ||
| 104 | } else | ||
| 105 | printk(KERN_EMERG "icache checked, and OK\n"); | ||
| 106 | } | ||
