summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-bcm
diff options
context:
space:
mode:
authorMatt Porter <mporter@linaro.org>2014-03-14 11:20:43 -0400
committerMatt Porter <mporter@linaro.org>2014-03-14 11:20:43 -0400
commit833688f4e49f659ad90a3ea7e2905720774c3f61 (patch)
tree1ec242f0c13e40fe9421f86561d0d81dec42fd12 /arch/arm/mach-bcm
parent0e8b860ac6d65209beea03ee9b718089838476ef (diff)
parentfdf4850cb5b2e5e549a18b8b41abb001bfb19e9c (diff)
downloadop-kernel-dev-833688f4e49f659ad90a3ea7e2905720774c3f61.zip
op-kernel-dev-833688f4e49f659ad90a3ea7e2905720774c3f61.tar.gz
Merge tag 'armsoc/for-3.15/soc-2' into armsoc/for-3.15/soc-3
ARM: mach-bcm soc updates - add BCM5301x support - remove GENERIC_TIME
Diffstat (limited to 'arch/arm/mach-bcm')
-rw-r--r--arch/arm/mach-bcm/Kconfig27
-rw-r--r--arch/arm/mach-bcm/Makefile1
-rw-r--r--arch/arm/mach-bcm/bcm_5301x.c61
3 files changed, 88 insertions, 1 deletions
diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
index b1aa6a9..f2a2fb9 100644
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -19,7 +19,6 @@ config ARCH_BCM_MOBILE
select CPU_V7
select CLKSRC_OF
select GENERIC_CLOCKEVENTS
- select GENERIC_TIME
select GPIO_BCM_KONA
select SPARSE_IRQ
select TICK_ONESHOT
@@ -32,6 +31,32 @@ config ARCH_BCM_MOBILE
BCM11130, BCM11140, BCM11351, BCM28145 and
BCM28155 variants.
+config ARCH_BCM_5301X
+ bool "Broadcom BCM470X / BCM5301X ARM SoC" if ARCH_MULTI_V7
+ depends on MMU
+ select ARM_GIC
+ select CACHE_L2X0
+ select HAVE_ARM_SCU if SMP
+ select HAVE_ARM_TWD if SMP
+ select HAVE_SMP
+ select COMMON_CLK
+ select GENERIC_CLOCKEVENTS
+ select ARM_GLOBAL_TIMER
+ select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
+ select MIGHT_HAVE_PCI
+ help
+ Support for Broadcom BCM470X and BCM5301X SoCs with ARM CPU cores.
+
+ This is a network SoC line mostly used in home routers and
+ wifi access points, it's internal name is Northstar.
+ This inclused the following SoC: BCM53010, BCM53011, BCM53012,
+ BCM53014, BCM53015, BCM53016, BCM53017, BCM53018, BCM4707,
+ BCM4708 and BCM4709.
+
+ Do not confuse this with the BCM4760 which is a totally
+ different SoC or with the older BCM47XX and BCM53XX based
+ network SoC using a MIPS CPU, they are supported by arch/mips/bcm47xx
+
endmenu
endif
diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile
index c2ccd5a..0164913 100644
--- a/arch/arm/mach-bcm/Makefile
+++ b/arch/arm/mach-bcm/Makefile
@@ -13,3 +13,4 @@
obj-$(CONFIG_ARCH_BCM_MOBILE) := board_bcm281xx.o bcm_kona_smc.o bcm_kona_smc_asm.o kona.o
plus_sec := $(call as-instr,.arch_extension sec,+sec)
AFLAGS_bcm_kona_smc_asm.o :=-Wa,-march=armv7-a$(plus_sec)
+obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o
diff --git a/arch/arm/mach-bcm/bcm_5301x.c b/arch/arm/mach-bcm/bcm_5301x.c
new file mode 100644
index 0000000..edff6976
--- /dev/null
+++ b/arch/arm/mach-bcm/bcm_5301x.c
@@ -0,0 +1,61 @@
+/*
+ * 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 == 0x1c06 && first_fault) {
+ first_fault = false;
+
+ /*
+ * These faults with code 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 void __init bcm5301x_dt_init(void)
+{
+ l2x0_of_init(0, ~0UL);
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char __initconst *bcm5301x_dt_compat[] = {
+ "brcm,bcm4708",
+ NULL,
+};
+
+DT_MACHINE_START(BCM5301X, "BCM5301X")
+ .init_early = bcm5301x_init_early,
+ .init_machine = bcm5301x_dt_init,
+ .dt_compat = bcm5301x_dt_compat,
+MACHINE_END
OpenPOWER on IntegriCloud