[PATCH 07/36] ARM: exynos: use private samsung_cpu_id copy

Arnd Bergmann
2019-10-10T20:33:59Z

The only part of plat-samsung that is shared with arch-exynos
is the CPU identification code.

Having a separate exynos_cpu_id variable makes the two completely
independent and is actually a bit less code in total.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm/mach-exynos/common.h | 6 +++---
arch/arm/mach-exynos/exynos.c | 19 +++++++++++++++----
arch/arm/mach-exynos/include/mach/map.h | 18 ------------------
arch/arm/mach-exynos/platsmp.c | 4 +---
arch/arm/mach-exynos/pm.c | 8 ++++----
arch/arm/plat-samsung/cpu.c | 17 -----------------
arch/arm/plat-samsung/include/plat/cpu.h | 2 --
arch/arm/plat-samsung/include/plat/map-s5p.h | 2 --
8 files changed, 23 insertions(+), 53 deletions(-)
delete mode 100644 arch/arm/mach-exynos/include/mach/map.h

diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 56411bb63d45..adf7db9c0885 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -24,12 +24,12 @@
#define EXYNOS5800_SOC_ID 0xE5422000
#define EXYNOS5_SOC_MASK 0xFFFFF000

-extern unsigned long samsung_cpu_id;
+extern unsigned long exynos_cpu_id;

#define IS_SAMSUNG_CPU(name, id, mask) \
static inline int is_samsung_##name(void) \
{ \
- return ((samsung_cpu_id & mask) == (id & mask)); \
+ return ((exynos_cpu_id & mask) == (id & mask)); \
}

IS_SAMSUNG_CPU(exynos3250, EXYNOS3250_SOC_ID, EXYNOS3_SOC_MASK)
@@ -147,7 +147,7 @@ extern struct cpuidle_exynos_data cpuidle_coupled_exynos_data;

extern void exynos_set_delayed_reset_assertion(bool enable);

-extern unsigned int samsung_rev(void);
+extern unsigned int exynos_rev(void);
extern void exynos_core_restart(u32 core_id);
extern int exynos_set_boot_addr(u32 core_id, unsigned long boot_addr);
extern int exynos_get_boot_addr(u32 core_id, unsigned long *boot_addr);
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 9aa483366ebc..da9300d655c6 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -19,11 +19,10 @@
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

-#include <mach/map.h>
-#include <plat/cpu.h>
-
#include "common.h"

+#define S5P_VA_CHIPID ((void __iomem __force *)0xF8000000)
+
static struct platform_device exynos_cpuidle = {
.name = "exynos_cpuidle",
#ifdef CONFIG_ARM_EXYNOS_CPUIDLE
@@ -36,6 +35,14 @@ void __iomem *sysram_base_addr __ro_after_init;
phys_addr_t sysram_base_phys __ro_after_init;
void __iomem *sysram_ns_base_addr __ro_after_init;

+unsigned long exynos_cpu_id;
+static unsigned int exynos_cpu_rev;
+
+unsigned int exynos_rev(void)
+{
+ return exynos_cpu_rev;
+}
+
void __init exynos_sysram_init(void)
{
struct device_node *node;
@@ -86,7 +93,11 @@ static void __init exynos_init_io(void)
of_scan_flat_dt(exynos_fdt_map_chipid, NULL);

/* detect cpu id and rev. */
- s5p_init_cpu(S5P_VA_CHIPID);
+ exynos_cpu_id = readl_relaxed(S5P_VA_CHIPID);
+ exynos_cpu_rev = exynos_cpu_id & 0xFF;
+
+ pr_info("Samsung CPU ID: 0x%08lx\n", exynos_cpu_id);
+
}

/*
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
deleted file mode 100644
index 22ebe3654633..000000000000
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
- * http://www.samsung.com/
- *
- * EXYNOS - Memory map definitions
- */
-
-#ifndef __ASM_ARCH_MAP_H
-#define __ASM_ARCH_MAP_H __FILE__
-
-#include <plat/map-base.h>
-
-#include <plat/map-s5p.h>
-
-#define EXYNOS_PA_CHIPID 0x10000000
-
-#endif /* __ASM_ARCH_MAP_H */
diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 0cbbae8bf1f8..d7fedbb2eefe 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -22,8 +22,6 @@
#include <asm/smp_scu.h>
#include <asm/firmware.h>

-#include <mach/map.h>
-
#include "common.h"

extern void exynos4_secondary_startup(void);
@@ -188,7 +186,7 @@ void exynos_scu_enable(void)

static void __iomem *cpu_boot_reg_base(void)
{
- if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_1_1)
+ if (soc_is_exynos4210() && exynos_rev() == EXYNOS4210_REV_1_1)
return pmu_base_addr + S5P_INFORM5;
return sysram_base_addr;
}
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 48e7fb38613e..624585641a9c 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -26,18 +26,18 @@

static inline void __iomem *exynos_boot_vector_addr(void)
{
- if (samsung_rev() == EXYNOS4210_REV_1_1)
+ if (exynos_rev() == EXYNOS4210_REV_1_1)
return pmu_base_addr + S5P_INFORM7;
- else if (samsung_rev() == EXYNOS4210_REV_1_0)
+ else if (exynos_rev() == EXYNOS4210_REV_1_0)
return sysram_base_addr + 0x24;
return pmu_base_addr + S5P_INFORM0;
}

static inline void __iomem *exynos_boot_vector_flag(void)
{
- if (samsung_rev() == EXYNOS4210_REV_1_1)
+ if (exynos_rev() == EXYNOS4210_REV_1_1)
return pmu_base_addr + S5P_INFORM6;
- else if (samsung_rev() == EXYNOS4210_REV_1_0)
+ else if (exynos_rev() == EXYNOS4210_REV_1_0)
return sysram_base_addr + 0x20;
return pmu_base_addr + S5P_INFORM1;
}
diff --git a/arch/arm/plat-samsung/cpu.c b/arch/arm/plat-samsung/cpu.c
index e1ba88ba31d8..8acba21bbf4b 100644
--- a/arch/arm/plat-samsung/cpu.c
+++ b/arch/arm/plat-samsung/cpu.c
@@ -14,13 +14,6 @@
#include <plat/cpu.h>

unsigned long samsung_cpu_id;
-static unsigned int samsung_cpu_rev;
-
-unsigned int samsung_rev(void)
-{
- return samsung_cpu_rev;
-}
-EXPORT_SYMBOL(samsung_rev);

void __init s3c64xx_init_cpu(void)
{
@@ -34,15 +27,5 @@ void __init s3c64xx_init_cpu(void)
samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0xA1C);
}

- samsung_cpu_rev = 0;
-
- pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id);
-}
-
-void __init s5p_init_cpu(const void __iomem *cpuid_addr)
-{
- samsung_cpu_id = readl_relaxed(cpuid_addr);
- samsung_cpu_rev = samsung_cpu_id & 0xFF;
-
pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id);
}
diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h
index fadcddbea064..02d7f991d5a3 100644
--- a/arch/arm/plat-samsung/include/plat/cpu.h
+++ b/arch/arm/plat-samsung/include/plat/cpu.h
@@ -111,8 +111,6 @@ extern void s3c24xx_init_io(struct map_desc *mach_desc, int size);
extern void s3c64xx_init_cpu(void);
extern void s5p_init_cpu(const void __iomem *cpuid_addr);

-extern unsigned int samsung_rev(void);
-
extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no);

extern void s3c24xx_init_clocks(int xtal);
diff --git a/arch/arm/plat-samsung/include/plat/map-s5p.h b/arch/arm/plat-samsung/include/plat/map-s5p.h
index d69a0ca09fb5..3812085f8761 100644
--- a/arch/arm/plat-samsung/include/plat/map-s5p.h
+++ b/arch/arm/plat-samsung/include/plat/map-s5p.h
@@ -9,8 +9,6 @@
#ifndef __ASM_PLAT_MAP_S5P_H
#define __ASM_PLAT_MAP_S5P_H __FILE__

-#define S5P_VA_CHIPID S3C_ADDR(0x02000000)
-
#define VA_VIC(x) (S3C_VA_IRQ + ((x) * 0x10000))
#define VA_VIC0 VA_VIC(0)
#define VA_VIC1 VA_VIC(1)
--
2.20.0