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| author | Fabrizio Castro <fabrizio.castro@bp.renesas.com> | 2018-02-12 17:44:19 +0000 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2018-03-13 20:54:16 +0100 |
| commit | 01d675f159e0f0792947fb823cf2425da4d747ad (patch) | |
| tree | 8e4006f76e798a0e10f77ca73a6db0b97ee2bf4d /arch/arm/mach-shmobile | |
| parent | 58adf1ba0d227754d9bc763c667f10efe0053ce5 (diff) | |
| download | linux-0-day-01d675f159e0f0792947fb823cf2425da4d747ad.tar.gz linux-0-day-01d675f159e0f0792947fb823cf2425da4d747ad.tar.xz | |
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>
Diffstat (limited to 'arch/arm/mach-shmobile')
| -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 4422b615a6ee6..ba732effc90b0 100644 --- a/arch/arm/mach-shmobile/platsmp-apmu.c +++ b/arch/arm/mach-shmobile/platsmp-apmu.c @@ -191,6 +191,7 @@ static void __init shmobile_smp_apmu_setup_boot(void) { /* install boot code shared by all CPUs */ shmobile_boot_fn = __pa_symbol(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 e5f215c8b2181..5a798b406af05 100644 --- a/arch/arm/mach-shmobile/pm-rcar-gen2.c +++ b/arch/arm/mach-shmobile/pm-rcar-gen2.c @@ -17,6 +17,7 @@ #include <linux/smp.h> #include <linux/soc/renesas/rcar-sysc.h> #include <asm/io.h> +#include <asm/cputype.h> #include "common.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) */ @@ -119,8 +119,17 @@ 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 */ |