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- /*
- * Broadcom BCM470X / BCM5301X ARM platform code.
- *
- * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de>
- *
- * Licensed under the GNU/GPL. See COPYING for details.
- */
- #include <linux/of_platform.h>
- #include <asm/hardware/cache-l2x0.h>
- #include <asm/mach/arch.h>
- #include <asm/siginfo.h>
- #include <asm/signal.h>
- static bool first_fault = true;
- static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr,
- struct pt_regs *regs)
- {
- if ((fsr == 0x1406 || fsr == 0x1c06) && first_fault) {
- first_fault = false;
- /*
- * These faults with codes 0x1406 (BCM4709) or 0x1c06 happens
- * for no good reason, possibly left over from the CFE boot
- * loader.
- */
- pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n",
- addr, fsr);
- /* Returning non-zero causes fault display and panic */
- return 0;
- }
- /* Others should cause a fault */
- return 1;
- }
- static void __init bcm5301x_init_early(void)
- {
- /* Install our hook */
- hook_fault_code(16 + 6, bcm5301x_abort_handler, SIGBUS, BUS_OBJERR,
- "imprecise external abort");
- }
- static const char __initconst *bcm5301x_dt_compat[] = {
- "brcm,bcm4708",
- NULL,
- };
- DT_MACHINE_START(BCM5301X, "BCM5301X")
- .l2c_aux_val = 0,
- .l2c_aux_mask = ~0,
- .init_early = bcm5301x_init_early,
- .dt_compat = bcm5301x_dt_compat,
- MACHINE_END
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