summaryrefslogtreecommitdiff
path: root/arch/xtensa/platforms
diff options
context:
space:
mode:
authorJohannes Weiner <jw@emlix.com>2009-03-04 16:21:33 +0100
committerChris Zankel <chris@zankel.net>2009-04-02 23:44:31 -0700
commitf82e939fb75ad01da8f0d3024fc678111ddb4ac7 (patch)
tree1edc0557251bdde18268dbe759b7e967c9555d3c /arch/xtensa/platforms
parent6770fa020fe3b63915ab082b4e5fd99d2d368c82 (diff)
xtensa: platform: s6105
Support for the S6105 IP Camera Reference Design Kit. Signed-off-by: Johannes Weiner <jw@emlix.com> Signed-off-by: Oskar Schirmer <os@emlix.com> Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/platforms')
-rw-r--r--arch/xtensa/platforms/s6105/Makefile3
-rw-r--r--arch/xtensa/platforms/s6105/device.c67
-rw-r--r--arch/xtensa/platforms/s6105/include/platform/gpio.h27
-rw-r--r--arch/xtensa/platforms/s6105/include/platform/hardware.h11
-rw-r--r--arch/xtensa/platforms/s6105/include/platform/serial.h8
-rw-r--r--arch/xtensa/platforms/s6105/setup.c61
6 files changed, 177 insertions, 0 deletions
diff --git a/arch/xtensa/platforms/s6105/Makefile b/arch/xtensa/platforms/s6105/Makefile
new file mode 100644
index 000000000000..0be6194bcb72
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/Makefile
@@ -0,0 +1,3 @@
+# Makefile for the Stretch S6105 eval board
+
+obj-y := setup.o device.o
diff --git a/arch/xtensa/platforms/s6105/device.c b/arch/xtensa/platforms/s6105/device.c
new file mode 100644
index 000000000000..78b08be5a92d
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/device.c
@@ -0,0 +1,67 @@
+/*
+ * s6105 platform devices
+ *
+ * Copyright (c) 2009 emlix GmbH
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+
+#include <variant/hardware.h>
+
+#define UART_INTNUM 4
+
+static const signed char uart_irq_mappings[] = {
+ S6_INTC_UART(0),
+ S6_INTC_UART(1),
+ -1,
+};
+
+const signed char *platform_irq_mappings[NR_IRQS] = {
+ [UART_INTNUM] = uart_irq_mappings,
+};
+
+static struct plat_serial8250_port serial_platform_data[] = {
+ {
+ .membase = (void *)S6_REG_UART + 0x0000,
+ .mapbase = S6_REG_UART + 0x0000,
+ .irq = UART_INTNUM,
+ .uartclk = S6_SCLK,
+ .regshift = 2,
+ .iotype = SERIAL_IO_MEM,
+ .flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
+ },
+ {
+ .membase = (void *)S6_REG_UART + 0x1000,
+ .mapbase = S6_REG_UART + 0x1000,
+ .irq = UART_INTNUM,
+ .uartclk = S6_SCLK,
+ .regshift = 2,
+ .iotype = SERIAL_IO_MEM,
+ .flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
+ },
+ { },
+};
+
+static struct platform_device platform_devices[] = {
+ {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = serial_platform_data,
+ },
+ },
+};
+
+static int __init device_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(platform_devices); i++)
+ platform_device_register(&platform_devices[i]);
+ return 0;
+}
+arch_initcall_sync(device_init);
diff --git a/arch/xtensa/platforms/s6105/include/platform/gpio.h b/arch/xtensa/platforms/s6105/include/platform/gpio.h
new file mode 100644
index 000000000000..fa11aa4b61e9
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/include/platform/gpio.h
@@ -0,0 +1,27 @@
+#ifndef __ASM_XTENSA_S6105_GPIO_H
+#define __ASM_XTENSA_S6105_GPIO_H
+
+#define GPIO_BP_TEMP_ALARM 0
+#define GPIO_PB_RESET_IN 1
+#define GPIO_EXP_IRQ 2
+#define GPIO_TRIGGER_IRQ 3
+#define GPIO_RTC_IRQ 4
+#define GPIO_PHY_IRQ 5
+#define GPIO_IMAGER_RESET 6
+#define GPIO_SD_IRQ 7
+#define GPIO_MINI_BOOT_INH 8
+#define GPIO_BOARD_RESET 9
+#define GPIO_EXP_PRESENT 10
+#define GPIO_LED1_NGREEN 12
+#define GPIO_LED1_RED 13
+#define GPIO_LED0_NGREEN 14
+#define GPIO_LED0_NRED 15
+#define GPIO_SPI_CS0 16
+#define GPIO_SPI_CS1 17
+#define GPIO_SPI_CS3 19
+#define GPIO_SPI_CS4 20
+#define GPIO_SD_WP 21
+#define GPIO_BP_RESET 22
+#define GPIO_ALARM_OUT 23
+
+#endif /* __ASM_XTENSA_S6105_GPIO_H */
diff --git a/arch/xtensa/platforms/s6105/include/platform/hardware.h b/arch/xtensa/platforms/s6105/include/platform/hardware.h
new file mode 100644
index 000000000000..d628efac7089
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/include/platform/hardware.h
@@ -0,0 +1,11 @@
+#ifndef __XTENSA_S6105_HARDWARE_H
+#define __XTENSA_S6105_HARDWARE_H
+
+#define PLATFORM_DEFAULT_MEM_START 0x40000000
+#define PLATFORM_DEFAULT_MEM_SIZE 0x08000000
+
+#define MAX_DMA_ADDRESS 0
+
+#define KERNELOFFSET (PLATFORM_DEFAULT_MEM_START + 0x1000)
+
+#endif /* __XTENSA_S6105_HARDWARE_H */
diff --git a/arch/xtensa/platforms/s6105/include/platform/serial.h b/arch/xtensa/platforms/s6105/include/platform/serial.h
new file mode 100644
index 000000000000..c8a771e5981b
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/include/platform/serial.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_XTENSA_S6105_SERIAL_H
+#define __ASM_XTENSA_S6105_SERIAL_H
+
+#include <variant/hardware.h>
+
+#define BASE_BAUD (S6_SCLK / 16)
+
+#endif /* __ASM_XTENSA_S6105_SERIAL_H */
diff --git a/arch/xtensa/platforms/s6105/setup.c b/arch/xtensa/platforms/s6105/setup.c
new file mode 100644
index 000000000000..ae041d5027a2
--- /dev/null
+++ b/arch/xtensa/platforms/s6105/setup.c
@@ -0,0 +1,61 @@
+/*
+ * s6105 control routines
+ *
+ * Copyright (c) 2009 emlix GmbH
+ */
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <asm/bootparam.h>
+
+#include <variant/hardware.h>
+#include <platform/gpio.h>
+
+void platform_halt(void)
+{
+ local_irq_disable();
+ while (1)
+ ;
+}
+
+void platform_power_off(void)
+{
+ platform_halt();
+}
+
+void platform_restart(void)
+{
+ platform_halt();
+}
+
+void __init platform_setup(char **cmdline)
+{
+ unsigned long reg;
+
+ reg = readl(S6_REG_GREG1 + S6_GREG1_CLKGATE);
+ reg &= ~(1 << S6_GREG1_BLOCK_SB);
+ writel(reg, S6_REG_GREG1 + S6_GREG1_CLKGATE);
+
+ reg = readl(S6_REG_GREG1 + S6_GREG1_BLOCKENA);
+ reg |= 1 << S6_GREG1_BLOCK_SB;
+ writel(reg, S6_REG_GREG1 + S6_GREG1_BLOCKENA);
+
+ printk(KERN_NOTICE "S6105 on Stretch S6000 - "
+ "Copyright (C) 2009 emlix GmbH <info@emlix.com>\n");
+}
+
+void __init platform_init(bp_tag_t *first)
+{
+ gpio_request(GPIO_LED1_NGREEN, "led1_green");
+ gpio_request(GPIO_LED1_RED, "led1_red");
+ gpio_direction_output(GPIO_LED1_NGREEN, 1);
+}
+
+void platform_heartbeat(void)
+{
+ static unsigned int c;
+
+ if (!(++c & 0x4F))
+ gpio_direction_output(GPIO_LED1_RED, !(c & 0x10));
+}