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Diffstat (limited to 'arch/arm/mach-s3c2410/cpu.c')
-rw-r--r--arch/arm/mach-s3c2410/cpu.c114
1 files changed, 103 insertions, 11 deletions
diff --git a/arch/arm/mach-s3c2410/cpu.c b/arch/arm/mach-s3c2410/cpu.c
index 70c34fcf7858..1c3c6adae6c4 100644
--- a/arch/arm/mach-s3c2410/cpu.c
+++ b/arch/arm/mach-s3c2410/cpu.c
@@ -37,12 +37,17 @@
#include <asm/mach/map.h>
#include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-serial.h>
#include "cpu.h"
+#include "devs.h"
#include "clock.h"
#include "s3c2400.h"
#include "s3c2410.h"
+#include "s3c2412.h"
+#include "s3c244x.h"
#include "s3c2440.h"
+#include "s3c2442.h"
struct cpu_table {
unsigned long idcode;
@@ -58,7 +63,9 @@ struct cpu_table {
static const char name_s3c2400[] = "S3C2400";
static const char name_s3c2410[] = "S3C2410";
+static const char name_s3c2412[] = "S3C2412";
static const char name_s3c2440[] = "S3C2440";
+static const char name_s3c2442[] = "S3C2442";
static const char name_s3c2410a[] = "S3C2410A";
static const char name_s3c2440a[] = "S3C2440A";
@@ -84,22 +91,40 @@ static struct cpu_table cpu_ids[] __initdata = {
{
.idcode = 0x32440000,
.idmask = 0xffffffff,
- .map_io = s3c2440_map_io,
- .init_clocks = s3c2440_init_clocks,
- .init_uarts = s3c2440_init_uarts,
+ .map_io = s3c244x_map_io,
+ .init_clocks = s3c244x_init_clocks,
+ .init_uarts = s3c244x_init_uarts,
.init = s3c2440_init,
.name = name_s3c2440
},
{
.idcode = 0x32440001,
.idmask = 0xffffffff,
- .map_io = s3c2440_map_io,
- .init_clocks = s3c2440_init_clocks,
- .init_uarts = s3c2440_init_uarts,
+ .map_io = s3c244x_map_io,
+ .init_clocks = s3c244x_init_clocks,
+ .init_uarts = s3c244x_init_uarts,
.init = s3c2440_init,
.name = name_s3c2440a
},
{
+ .idcode = 0x32440aaa,
+ .idmask = 0xffffffff,
+ .map_io = s3c244x_map_io,
+ .init_clocks = s3c244x_init_clocks,
+ .init_uarts = s3c244x_init_uarts,
+ .init = s3c2442_init,
+ .name = name_s3c2442
+ },
+ {
+ .idcode = 0x32412001,
+ .idmask = 0xffffffff,
+ .map_io = s3c2412_map_io,
+ .init_clocks = s3c2412_init_clocks,
+ .init_uarts = s3c2412_init_uarts,
+ .init = s3c2412_init,
+ .name = name_s3c2412,
+ },
+ {
.idcode = 0x0, /* S3C2400 doesn't have an idcode */
.idmask = 0xffffffff,
.map_io = s3c2400_map_io,
@@ -157,6 +182,24 @@ void s3c24xx_set_board(struct s3c24xx_board *b)
static struct cpu_table *cpu;
+static unsigned long s3c24xx_read_idcode_v5(void)
+{
+#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413)
+ return __raw_readl(S3C2412_GSTATUS1);
+#else
+ return 1UL; /* don't look like an 2400 */
+#endif
+}
+
+static unsigned long s3c24xx_read_idcode_v4(void)
+{
+#ifndef CONFIG_CPU_S3C2400
+ return __raw_readl(S3C2410_GSTATUS1);
+#else
+ return 0UL;
+#endif
+}
+
void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
{
unsigned long idcode = 0x0;
@@ -164,9 +207,11 @@ void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
/* initialise the io descriptors we need for initialisation */
iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc));
-#ifndef CONFIG_CPU_S3C2400
- idcode = __raw_readl(S3C2410_GSTATUS1);
-#endif
+ if (cpu_architecture() >= CPU_ARCH_ARMv5) {
+ idcode = s3c24xx_read_idcode_v5();
+ } else {
+ idcode = s3c24xx_read_idcode_v4();
+ }
cpu = s3c_lookup_cpu(idcode);
@@ -175,13 +220,13 @@ void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
panic("Unknown S3C24XX CPU");
}
+ printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
+
if (cpu->map_io == NULL || cpu->init == NULL) {
printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);
panic("Unsupported S3C24XX CPU");
}
- printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
-
(cpu->map_io)(mach_desc, size);
}
@@ -208,6 +253,49 @@ void __init s3c24xx_init_clocks(int xtal)
(cpu->init_clocks)(xtal);
}
+/* uart management */
+
+static int nr_uarts __initdata = 0;
+
+static struct s3c2410_uartcfg uart_cfgs[3];
+
+/* s3c24xx_init_uartdevs
+ *
+ * copy the specified platform data and configuration into our central
+ * set of devices, before the data is thrown away after the init process.
+ *
+ * This also fills in the array passed to the serial driver for the
+ * early initialisation of the console.
+*/
+
+void __init s3c24xx_init_uartdevs(char *name,
+ struct s3c24xx_uart_resources *res,
+ struct s3c2410_uartcfg *cfg, int no)
+{
+ struct platform_device *platdev;
+ struct s3c2410_uartcfg *cfgptr = uart_cfgs;
+ struct s3c24xx_uart_resources *resp;
+ int uart;
+
+ memcpy(cfgptr, cfg, sizeof(struct s3c2410_uartcfg) * no);
+
+ for (uart = 0; uart < no; uart++, cfg++, cfgptr++) {
+ platdev = s3c24xx_uart_src[cfgptr->hwport];
+
+ resp = res + cfgptr->hwport;
+
+ s3c24xx_uart_devs[uart] = platdev;
+
+ platdev->name = name;
+ platdev->resource = resp->resources;
+ platdev->num_resources = resp->nr_resources;
+
+ platdev->dev.platform_data = cfgptr;
+ }
+
+ nr_uarts = no;
+}
+
void __init s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no)
{
if (cpu == NULL)
@@ -232,6 +320,10 @@ static int __init s3c_arch_init(void)
if (ret != 0)
return ret;
+ ret = platform_add_devices(s3c24xx_uart_devs, nr_uarts);
+ if (ret != 0)
+ return ret;
+
if (board != NULL) {
struct platform_device **ptr = board->devices;
int i;