diff options
| author | Fabrizio Castro <fabrizio.castro@bp.renesas.com> | 2018-07-26 18:42:47 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben.hutchings@codethink.co.uk> | 2018-08-24 19:18:23 +0100 |
| commit | 7ca998978cb8aaf64b69dd0c8ca86867f4cfe1a3 (patch) | |
| tree | 41eda335422eed7c5df034ef913f2ecd0c88d96a | |
| parent | 9b1ae093d8734b07a0a0ab878df12b2761426ec8 (diff) | |
| download | linux-cip-7ca998978cb8aaf64b69dd0c8ca86867f4cfe1a3.tar.gz | |
ARM: shmobile: rcar-gen2: Add watchdog support
This patch adds watchdog support by installing shmobile_boot_vector_gen2
to ICRAM1 when enough memory is available, in which case we also keep a
copy of MPIDR to complete the reset vector logic.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit 01d675f159e0f0792947fb823cf2425da4d747ad)
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
| -rw-r--r-- | arch/arm/mach-shmobile/platsmp-apmu.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/pm-rcar-gen2.c | 15 |
2 files changed, 13 insertions, 3 deletions
diff --git a/arch/arm/mach-shmobile/platsmp-apmu.c b/arch/arm/mach-shmobile/platsmp-apmu.c index 66fe008aa906e4..4153d5a89ec870 100644 --- a/arch/arm/mach-shmobile/platsmp-apmu.c +++ b/arch/arm/mach-shmobile/platsmp-apmu.c @@ -186,6 +186,7 @@ static void __init shmobile_smp_apmu_setup_boot(void) { /* install boot code shared by all CPUs */ shmobile_boot_fn = virt_to_phys(shmobile_smp_boot); + shmobile_boot_fn_gen2 = shmobile_boot_fn; } void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus, diff --git a/arch/arm/mach-shmobile/pm-rcar-gen2.c b/arch/arm/mach-shmobile/pm-rcar-gen2.c index 7a34ec9b3490b5..0054561239a7e9 100644 --- a/arch/arm/mach-shmobile/pm-rcar-gen2.c +++ b/arch/arm/mach-shmobile/pm-rcar-gen2.c @@ -16,6 +16,7 @@ #include <linux/of_address.h> #include <linux/smp.h> #include <asm/io.h> +#include <asm/cputype.h> #include "common.h" #include "pm-rcar.h" #include "rcar-gen2.h" @@ -37,7 +38,6 @@ #define CA7RESCNT_CODE 0x5a5a0000 #define CA7RESCNT_CPUS 0xf /* CPU0-3 */ - /* On-chip RAM */ #define ICRAM1 0xe63c0000 /* Inter Connect RAM1 (4 KiB) */ @@ -127,8 +127,17 @@ map: p = ioremap(res.start, resource_size(&res)); if (!p) return; - - memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size); + /* + * install the reset vector, use the largest version if we have enough + * memory available + */ + if (resource_size(&res) >= shmobile_boot_size_gen2) { + shmobile_boot_cpu_gen2 = read_cpuid_mpidr(); + memcpy_toio(p, shmobile_boot_vector_gen2, + shmobile_boot_size_gen2); + } else { + memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size); + } iounmap(p); /* setup reset vectors */ |