commit: http://blackfin.uclinux.org/git/?p=linux-kernel;a=commitdiff;h=95ab7db3aa4ec52ce19bd5a69590be10399e90f4 branch: http://blackfin.uclinux.org/git/?p=linux-kernel;a=shortlog;h=refs/heads/trunk
bf60x support l2 hardware ecc error check, this commit add panic when double bits ecc error happened. Signed-off-by: Bob Liu <[email protected]> --- arch/blackfin/mm/sram-alloc.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 files changed, 39 insertions(+), 0 deletions(-) diff --git a/arch/blackfin/mm/sram-alloc.c b/arch/blackfin/mm/sram-alloc.c index 29d98fa..df89b87 100644 --- a/arch/blackfin/mm/sram-alloc.c +++ b/arch/blackfin/mm/sram-alloc.c @@ -186,9 +186,48 @@ static void __init l1_inst_sram_init(void) #endif } +#ifdef __ADSPBF60x__ +static irqreturn_t l2_ecc_err(int irq, void *dev_id) +{ + int status; + + printk(KERN_ERR "L2 ecc error happend\n"); + status = bfin_read32(L2CTL0_STAT); + if (status & 0x1) + printk(KERN_ERR "Core channel error type:0x%x, addr:0x%x\n", + bfin_read32(L2CTL0_ET0), bfin_read32(L2CTL0_EADDR0)); + if (status & 0x2) + printk(KERN_ERR "System channel error type:0x%x, addr:0x%x\n", + bfin_read32(L2CTL0_ET1), bfin_read32(L2CTL0_EADDR1)); + + status = status >> 8; + if (status) + printk(KERN_ERR "L2 Bank%d error, addr:0x%x\n", + status, bfin_read32(L2CTL0_ERRADDR0 + status)); + + panic("L2 Ecc error"); + return IRQ_HANDLED; +} +#endif + static void __init l2_sram_init(void) { #if L2_LENGTH != 0 + +#ifdef __ADSPBF60x__ + int ret; + + /* enable ecc */ + bfin_write32(L2CTL0_CTL, 0xff); + + ret = request_irq(IRQ_L2CTL0_ECC_ERR, l2_ecc_err, 0, "l2-ecc-err", + NULL); + if (unlikely(ret < 0)) { + printk(KERN_INFO "Fail to request l2 ecc error interrupt"); + return; + } +#endif + free_l2_sram_head.next = kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); if (!free_l2_sram_head.next) {
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