mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-27 04:47:05 +00:00
Code Issues Releases Wiki Activity

ARM: EXYNOS: Consolidate CPU init code

Browse source 
cpu_table was used to distinguish between different Exynos4 and 5
SoCs and based on the type do the initialization and io mapping.
exynos_init is dummy and no longer needed as we do a DT based booting.
By having a common io mapping function we can get rid of the whole
table and avoid populating it for every SoC.

Tested on Exynos4210, 5250 and 5420 based boards.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Tested-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Sachin Kamat 2014-03-21 02:09:39 +09:00 committed by Kukjin Kim
parent 58553078c1
commit 6eb84669cf
1 changed files with 23 additions and 85 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

108
arch/arm/mach-exynos/common.c
View file

@ -48,56 +48,6 @@
#define L2_AUX_VAL 0x7C470001
#define L2_AUX_MASK 0xC200ffff
static const char name_exynos4210[] = "EXYNOS4210";
static const char name_exynos4212[] = "EXYNOS4212";
static const char name_exynos4412[] = "EXYNOS4412";
static const char name_exynos5250[] = "EXYNOS5250";
static const char name_exynos5420[] = "EXYNOS5420";
static const char name_exynos5440[] = "EXYNOS5440";
static void exynos4_map_io(void);
static void exynos5_map_io(void);
static int exynos_init(void);
static struct cpu_table cpu_ids[] __initdata = {
{
.idcode = EXYNOS4210_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init = exynos_init,
.name = name_exynos4210,
}, {
.idcode = EXYNOS4212_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init = exynos_init,
.name = name_exynos4212,
}, {
.idcode = EXYNOS4412_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init = exynos_init,
.name = name_exynos4412,
}, {
.idcode = EXYNOS5250_SOC_ID,
.idmask = EXYNOS5_SOC_MASK,
.map_io = exynos5_map_io,
.init = exynos_init,
.name = name_exynos5250,
}, {
.idcode = EXYNOS5420_SOC_ID,
.idmask = EXYNOS5_SOC_MASK,
.map_io = exynos5_map_io,
.init = exynos_init,
.name = name_exynos5420,
}, {
.idcode = EXYNOS5440_SOC_ID,
.idmask = EXYNOS5_SOC_MASK,
.init = exynos_init,
.name = name_exynos5440,
},
};
/* Initial IO mappings */
static struct map_desc exynos4_iodesc[] __initdata = {
@ -345,6 +295,28 @@ static int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
*
* register the standard cpu IO areas
*/
static void __init exynos_map_io(void)
{
if (soc_is_exynos4210() || soc_is_exynos4212() || soc_is_exynos4412())
iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
if (soc_is_exynos5250() || soc_is_exynos5420())
iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
if (soc_is_exynos4210()) {
if (samsung_rev() == EXYNOS4210_REV_0)
iotable_init(exynos4_iodesc0,
ARRAY_SIZE(exynos4_iodesc0));
else
iotable_init(exynos4_iodesc1,
ARRAY_SIZE(exynos4_iodesc1));
iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc));
}
if (soc_is_exynos4212() || soc_is_exynos4412())
iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc));
if (soc_is_exynos5250())
iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc));
}
void __init exynos_init_io(void)
{
@ -355,30 +327,7 @@ void __init exynos_init_io(void)
/* detect cpu id and rev. */
s5p_init_cpu(S5P_VA_CHIPID);
s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
}
static void __init exynos4_map_io(void)
{
iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
iotable_init(exynos4_iodesc0, ARRAY_SIZE(exynos4_iodesc0));
else
iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1));
if (soc_is_exynos4210())
iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc));
if (soc_is_exynos4212() || soc_is_exynos4412())
iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc));
}
static void __init exynos5_map_io(void)
{
iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
if (soc_is_exynos5250())
iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc));
exynos_map_io();
}
struct bus_type exynos_subsys = {
@ -386,10 +335,6 @@ struct bus_type exynos_subsys = {
.dev_name = "exynos-core",
};
static struct device exynos4_dev = {
.bus = &exynos_subsys,
};
static int __init exynos_core_init(void)
{
return subsys_system_register(&exynos_subsys, NULL);
@ -409,10 +354,3 @@ static int __init exynos4_l2x0_cache_init(void)
return 0;
}
early_initcall(exynos4_l2x0_cache_init);
static int __init exynos_init(void)
{
printk(KERN_INFO "EXYNOS: Initializing architecture\n");
return device_register(&exynos4_dev);
}