projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5b293ebe HM |
1 | /* |
| 2 | * Broadcom BCM470X / BCM5301X ARM platform code. | |
| 3 | * | |
| 4 | * Copyright 2013 Hauke Mehrtens <hauke@hauke-m.de> | |
| 5 | * | |
| 6 | * Licensed under the GNU/GPL. See COPYING for details. | |
| 7 | */ | |
| 8 | #include <linux/of_platform.h> | |
| 9 | #include <asm/hardware/cache-l2x0.h> | |
| 10 | ||
| 11 | #include <asm/mach/arch.h> | |
| fdf4850c HM |
12 | #include <asm/siginfo.h> |
| 13 | #include <asm/signal.h> | |
| 5b293ebe HM |
14 | |
| 15 | ||
| fdf4850c HM |
16 | static bool first_fault = true; |
| 17 | ||
| 18 | static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr, | |
| 19 | struct pt_regs *regs) | |
| 20 | { | |
| 21 | if (fsr == 0x1c06 && first_fault) { | |
| 22 | first_fault = false; | |
| 23 | ||
| 24 | /* | |
| 25 | * These faults with code 0x1c06 happens for no good reason, | |
| 26 | * possibly left over from the CFE boot loader. | |
| 27 | */ | |
| 28 | pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n", | |
| 29 | addr, fsr); | |
| 30 | ||
| 31 | /* Returning non-zero causes fault display and panic */ | |
| 32 | return 0; | |
| 33 | } | |
| 34 | ||
| 35 | /* Others should cause a fault */ | |
| 36 | return 1; | |
| 37 | } | |
| 38 | ||
| 39 | static void __init bcm5301x_init_early(void) | |
| 40 | { | |
| 41 | /* Install our hook */ | |
| 42 | hook_fault_code(16 + 6, bcm5301x_abort_handler, SIGBUS, BUS_OBJERR, | |
| 43 | "imprecise external abort"); | |
| 44 | } | |
| 45 | ||
| 5b293ebe HM |
46 | static void __init bcm5301x_dt_init(void) |
| 47 | { | |
| d453ef75 | 48 | l2x0_of_init(0, ~0); |
| 5b293ebe HM |
49 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
| 50 | } | |
| 51 | ||
| 52 | static const char __initconst *bcm5301x_dt_compat[] = { | |
| 53 | "brcm,bcm4708", | |
| 54 | NULL, | |
| 55 | }; | |
| 56 | ||
| 57 | DT_MACHINE_START(BCM5301X, "BCM5301X") | |
| fdf4850c | 58 | .init_early = bcm5301x_init_early, |
| 5b293ebe HM |
59 | .init_machine = bcm5301x_dt_init, |
| 60 | .dt_compat = bcm5301x_dt_compat, | |
| 61 | MACHINE_END |