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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>
- #define FSR_EXTERNAL (1 << 12)
- #define FSR_READ (0 << 10)
- #define FSR_IMPRECISE 0x0406
- static const char *const bcm5301x_dt_compat[] __initconst = {
- "brcm,bcm4708",
- NULL,
- };
- static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr,
- struct pt_regs *regs)
- {
- /*
- * We want to ignore aborts forwarded from the PCIe bus that are
- * expected and shouldn't really be passed by the PCIe controller.
- * The biggest disadvantage is the same FSR code may be reported when
- * reading non-existing APB register and we shouldn't ignore that.
- */
- if (fsr == (FSR_EXTERNAL | FSR_READ | FSR_IMPRECISE))
- return 0;
- return 1;
- }
- static void __init bcm5301x_init_early(void)
- {
- hook_fault_code(16 + 6, bcm5301x_abort_handler, SIGBUS, BUS_OBJERR,
- "imprecise external abort");
- }
- DT_MACHINE_START(BCM5301X, "BCM5301X")
- .l2c_aux_val = 0,
- .l2c_aux_mask = ~0,
- .dt_compat = bcm5301x_dt_compat,
- .init_early = bcm5301x_init_early,
- MACHINE_END
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