Commit 1754c42e authored by Olof Johansson's avatar Olof Johansson Committed by Arnd Bergmann

ARM: exynos: move sysram info to exynos.c

This solves a problem with building with CONFIG_SMP=n due to missing
sysram_base_addr (or sysram_ns_base_addr) variables.

The new setup method is more awkward than I'd like for it to be, but
it can't be done in init_early() since ioremap is not yet available,
but it needs to happen before SMP.
Reported-by: default avatarRussell King <linux@arm.linux.org.uk>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
Reviewed-by: default avatarTomasz Figa <t.figa@samsung.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 1ad58443
...@@ -118,6 +118,7 @@ extern void __iomem *sysram_ns_base_addr; ...@@ -118,6 +118,7 @@ extern void __iomem *sysram_ns_base_addr;
extern void __iomem *sysram_base_addr; extern void __iomem *sysram_base_addr;
void exynos_init_io(void); void exynos_init_io(void);
void exynos_restart(enum reboot_mode mode, const char *cmd); void exynos_restart(enum reboot_mode mode, const char *cmd);
void exynos_sysram_init(void);
void exynos_cpuidle_init(void); void exynos_cpuidle_init(void);
void exynos_cpufreq_init(void); void exynos_cpufreq_init(void);
void exynos_init_late(void); void exynos_init_late(void);
......
...@@ -184,6 +184,28 @@ void __init exynos_cpufreq_init(void) ...@@ -184,6 +184,28 @@ void __init exynos_cpufreq_init(void)
platform_device_register_simple("exynos-cpufreq", -1, NULL, 0); platform_device_register_simple("exynos-cpufreq", -1, NULL, 0);
} }
void __iomem *sysram_base_addr;
void __iomem *sysram_ns_base_addr;
void __init exynos_sysram_init(void)
{
struct device_node *node;
for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram") {
if (!of_device_is_available(node))
continue;
sysram_base_addr = of_iomap(node, 0);
break;
}
for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram-ns") {
if (!of_device_is_available(node))
continue;
sysram_ns_base_addr = of_iomap(node, 0);
break;
}
}
void __init exynos_init_late(void) void __init exynos_init_late(void)
{ {
if (of_machine_is_compatible("samsung,exynos5440")) if (of_machine_is_compatible("samsung,exynos5440"))
...@@ -271,6 +293,13 @@ static void __init exynos_dt_machine_init(void) ...@@ -271,6 +293,13 @@ static void __init exynos_dt_machine_init(void)
} }
} }
/*
* This is called from smp_prepare_cpus if we've built for SMP, but
* we still need to set it up for PM and firmware ops if not.
*/
if (!IS_ENABLED(SMP))
exynos_sysram_init();
exynos_cpuidle_init(); exynos_cpuidle_init();
exynos_cpufreq_init(); exynos_cpufreq_init();
......
...@@ -32,28 +32,6 @@ ...@@ -32,28 +32,6 @@
extern void exynos4_secondary_startup(void); extern void exynos4_secondary_startup(void);
void __iomem *sysram_base_addr;
void __iomem *sysram_ns_base_addr;
static void __init exynos_smp_prepare_sysram(void)
{
struct device_node *node;
for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram") {
if (!of_device_is_available(node))
continue;
sysram_base_addr = of_iomap(node, 0);
break;
}
for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram-ns") {
if (!of_device_is_available(node))
continue;
sysram_ns_base_addr = of_iomap(node, 0);
break;
}
}
static inline void __iomem *cpu_boot_reg_base(void) static inline void __iomem *cpu_boot_reg_base(void)
{ {
if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_1_1) if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_1_1)
...@@ -234,11 +212,11 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus) ...@@ -234,11 +212,11 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
{ {
int i; int i;
exynos_sysram_init();
if (read_cpuid_part_number() == ARM_CPU_PART_CORTEX_A9) if (read_cpuid_part_number() == ARM_CPU_PART_CORTEX_A9)
scu_enable(scu_base_addr()); scu_enable(scu_base_addr());
exynos_smp_prepare_sysram();
/* /*
* Write the address of secondary startup into the * Write the address of secondary startup into the
* system-wide flags register. The boot monitor waits * system-wide flags register. The boot monitor waits
......
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