57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
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/*
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* Broadcom BCM470X / BCM5301X ARM platform code.
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*
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* Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
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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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static bool first_fault = true;
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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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if (fsr == 0x1c06 && first_fault) {
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first_fault = false;
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/*
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* These faults with code 0x1c06 happens for no good reason,
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* possibly left over from the CFE boot loader.
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*/
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pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n",
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addr, fsr);
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/* Returning non-zero causes fault display and panic */
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return 0;
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}
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/* Others should cause a fault */
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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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/* Install our hook */
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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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static const char __initconst *bcm5301x_dt_compat[] = {
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"brcm,bcm4708",
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NULL,
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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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.init_early = bcm5301x_init_early,
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.dt_compat = bcm5301x_dt_compat,
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MACHINE_END
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