diff options
Diffstat (limited to 'arch/arm/mach-shmobile/smp-sh73a0.c')
| -rw-r--r-- | arch/arm/mach-shmobile/smp-sh73a0.c | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c index 41137404382e..9196b37ea292 100644 --- a/arch/arm/mach-shmobile/smp-sh73a0.c +++ b/arch/arm/mach-shmobile/smp-sh73a0.c @@ -1,17 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * SMP support for R-Mobile / SH-Mobile - sh73a0 portion * * Copyright (C) 2010 Magnus Damm * Copyright (C) 2010 Takashi Yoshii - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/kernel.h> #include <linux/init.h> @@ -20,36 +12,52 @@ #include <linux/delay.h> #include <asm/smp_plat.h> -#include <asm/smp_twd.h> #include "common.h" #include "sh73a0.h" -#define WUPCR IOMEM(0xe6151010) -#define SRESCR IOMEM(0xe6151018) -#define PSTR IOMEM(0xe6151040) -#define SBAR IOMEM(0xe6180020) -#define APARMBAREA IOMEM(0xe6f10020) +#define CPG_BASE2 0xe6151000 +#define WUPCR 0x10 /* System-CPU Wake Up Control Register */ +#define SRESCR 0x18 /* System-CPU Software Reset Control Register */ +#define PSTR 0x40 /* System-CPU Power Status Register */ + +#define SYSC_BASE 0xe6180000 +#define SBAR 0x20 /* SYS Boot Address Register */ + +#define AP_BASE 0xe6f10000 +#define APARMBAREA 0x20 /* Address Translation Area Register */ #define SH73A0_SCU_BASE 0xf0000000 static int sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle) { unsigned int lcpu = cpu_logical_map(cpu); + void __iomem *cpg2 = ioremap(CPG_BASE2, PAGE_SIZE); - if (((__raw_readl(PSTR) >> (4 * lcpu)) & 3) == 3) - __raw_writel(1 << lcpu, WUPCR); /* wake up */ + if (((readl(cpg2 + PSTR) >> (4 * lcpu)) & 3) == 3) + writel(1 << lcpu, cpg2 + WUPCR); /* wake up */ else - __raw_writel(1 << lcpu, SRESCR); /* reset */ - + writel(1 << lcpu, cpg2 + SRESCR); /* reset */ + iounmap(cpg2); return 0; } static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus) { + 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) */ - __raw_writel(0, APARMBAREA); /* 4k */ - __raw_writel(__pa(shmobile_boot_vector), SBAR); + 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); + iounmap(ap); /* setup sh73a0 specific SCU bits */ shmobile_smp_scu_prepare_cpus(SH73A0_SCU_BASE, max_cpus); |