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50 lines
1.2 KiB
50 lines
1.2 KiB
/* |
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* Broadcom BCM470X / BCM5301X ARM platform code. |
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* |
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* Copyright 2013 Hauke Mehrtens <[email protected]> |
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* |
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* Licensed under the GNU/GPL. See COPYING for details. |
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*/ |
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#include <linux/of_platform.h> |
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#include <asm/hardware/cache-l2x0.h> |
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#include <asm/mach/arch.h> |
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#include <asm/siginfo.h> |
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#include <asm/signal.h> |
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#define FSR_EXTERNAL (1 << 12) |
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#define FSR_READ (0 << 10) |
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#define FSR_IMPRECISE 0x0406 |
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static const char *const bcm5301x_dt_compat[] __initconst = { |
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"brcm,bcm4708", |
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NULL, |
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}; |
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static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr, |
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struct pt_regs *regs) |
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{ |
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/* |
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* We want to ignore aborts forwarded from the PCIe bus that are |
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* expected and shouldn't really be passed by the PCIe controller. |
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* The biggest disadvantage is the same FSR code may be reported when |
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* reading non-existing APB register and we shouldn't ignore that. |
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*/ |
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if (fsr == (FSR_EXTERNAL | FSR_READ | FSR_IMPRECISE)) |
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return 0; |
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return 1; |
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} |
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static void __init bcm5301x_init_early(void) |
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{ |
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hook_fault_code(16 + 6, bcm5301x_abort_handler, SIGBUS, BUS_OBJERR, |
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"imprecise external abort"); |
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} |
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DT_MACHINE_START(BCM5301X, "BCM5301X") |
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.l2c_aux_val = 0, |
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.l2c_aux_mask = ~0, |
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.dt_compat = bcm5301x_dt_compat, |
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.init_early = bcm5301x_init_early, |
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MACHINE_END
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