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| author | Arnd Bergmann <arnd@arndb.de> | 2023-10-18 15:33:30 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2023-10-18 15:33:31 +0200 |
| commit | f46ada004d8cf9e02aa72311b1380e1ba472fede (patch) | |
| tree | 5059c32028ea87a6e2614d1a26eff67914d6939f /arch/arm | |
| parent | 646fe2e4b39049078d18c72832afec21dc9d6b52 (diff) | |
| parent | 435d422624b74085e2c0be650dc3a1d3a4a6bfa5 (diff) | |
Merge tag 'renesas-arm-soc-for-v6.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into soc/arm
Renesas ARM SoC updates for v6.7
- Reserve boot area when SMP is enabled to prevent conflicts with
FLASH,
- Miscellaneous fixes and improvements.
* tag 'renesas-arm-soc-for-v6.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
ARM: shmobile: sh73a0: Reserve boot area when SMP is enabled
ARM: shmobile: r8a7779: Reserve boot area when SMP is enabled
ARM: shmobile: rcar-gen2: Reserve boot area when SMP is enabled
ARM: shmobile: rcar-gen2: Remove unneeded once handling
Link: https://lore.kernel.org/r/cover.1695985421.git.geert+renesas@glider.be
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-shmobile/pm-rcar-gen2.c | 5 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/smp-r8a7779.c | 9 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/smp-sh73a0.c | 10 |
3 files changed, 19 insertions, 5 deletions
diff --git a/arch/arm/mach-shmobile/pm-rcar-gen2.c b/arch/arm/mach-shmobile/pm-rcar-gen2.c index 672081405a7e..907a4f8c5aed 100644 --- a/arch/arm/mach-shmobile/pm-rcar-gen2.c +++ b/arch/arm/mach-shmobile/pm-rcar-gen2.c @@ -46,15 +46,16 @@ void __init rcar_gen2_pm_init(void) { void __iomem *p; u32 bar; - static int once; struct device_node *np; bool has_a7 = false; bool has_a15 = false; struct resource res; int error; - if (once++) + if (!request_mem_region(0, SZ_256K, "Boot Area")) { + pr_err("Failed to request boot area\n"); return; + } for_each_of_cpu_node(np) { if (of_device_is_compatible(np, "arm,cortex-a15")) diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c index 1bc609986c16..474c325323a3 100644 --- a/arch/arm/mach-shmobile/smp-r8a7779.c +++ b/arch/arm/mach-shmobile/smp-r8a7779.c @@ -38,7 +38,14 @@ static int r8a7779_boot_secondary(unsigned int cpu, struct task_struct *idle) static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus) { - void __iomem *base = ioremap(HPBREG_BASE, 0x1000); + void __iomem *base; + + if (!request_mem_region(0, SZ_4K, "Boot Area")) { + pr_err("Failed to request boot area\n"); + return; + } + + base = ioremap(HPBREG_BASE, 0x1000); /* Map the reset vector (in headsmp-scu.S, headsmp.S) */ writel(__pa(shmobile_boot_vector), base + AVECR); diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c index 453d48865029..9196b37ea292 100644 --- a/arch/arm/mach-shmobile/smp-sh73a0.c +++ b/arch/arm/mach-shmobile/smp-sh73a0.c @@ -44,10 +44,16 @@ static int sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle) static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus) { - void __iomem *ap = ioremap(AP_BASE, PAGE_SIZE); - void __iomem *sysc = ioremap(SYSC_BASE, PAGE_SIZE); + void __iomem *ap, *sysc; + + if (!request_mem_region(0, SZ_4K, "Boot Area")) { + pr_err("Failed to request boot area\n"); + return; + } /* Map the reset vector (in headsmp.S) */ + ap = ioremap(AP_BASE, PAGE_SIZE); + sysc = ioremap(SYSC_BASE, PAGE_SIZE); writel(0, ap + APARMBAREA); /* 4k */ writel(__pa(shmobile_boot_vector), sysc + SBAR); iounmap(sysc); |