[ARM] Orion: add Technologic Systems TS-78xx support

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>

1 files changed, 277 insertions, 0 deletions

diff --git a/arch/arm/mach-orion5x/ts78xx-setup.c b/arch/arm/mach-orion5x/ts78xx-setup.c
new file mode 100644
index 000000000000..77e9f351f07a
--- /dev/null
+++ b/arch/arm/mach-orion5x/ts78xx-setup.c
@@ -0,0 +1,277 @@
+/*
+ * arch/arm/mach-orion5x/ts78xx-setup.c
+ *
+ * Maintainer: Alexander Clouter <alex@digriz.org.uk>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mv643xx_eth.h>
+#include <linux/ata_platform.h>
+#include <linux/m48t86.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/arch/orion5x.h>
+#include "common.h"
+#include "mpp.h"
+
+/*****************************************************************************
+ * TS-78xx Info
+ ****************************************************************************/
+
+/*
+ * FPGA - lives where the PCI bus would be at ORION5X_PCI_MEM_PHYS_BASE
+ */
+#define TS78XX_FPGA_REGS_PHYS_BASE	0xe8000000
+#define TS78XX_FPGA_REGS_VIRT_BASE	0xff900000
+#define TS78XX_FPGA_REGS_SIZE		SZ_1M
+
+#define TS78XX_FPGA_REGS_SYSCON_ID	(TS78XX_FPGA_REGS_VIRT_BASE | 0x000)
+#define TS78XX_FPGA_REGS_SYSCON_LCDI	(TS78XX_FPGA_REGS_VIRT_BASE | 0x004)
+#define TS78XX_FPGA_REGS_SYSCON_LCDO	(TS78XX_FPGA_REGS_VIRT_BASE | 0x008)
+
+#define TS78XX_FPGA_REGS_RTC_CTRL	(TS78XX_FPGA_REGS_VIRT_BASE | 0x808)
+#define TS78XX_FPGA_REGS_RTC_DATA	(TS78XX_FPGA_REGS_VIRT_BASE | 0x80c)
+
+/*
+ * 512kB NOR flash Device
+ */
+#define TS78XX_NOR_BOOT_BASE		0xff800000
+#define TS78XX_NOR_BOOT_SIZE		SZ_512K
+
+/*****************************************************************************
+ * I/O Address Mapping
+ ****************************************************************************/
+static struct map_desc ts78xx_io_desc[] __initdata = {
+	{
+		.virtual	= TS78XX_FPGA_REGS_VIRT_BASE,
+		.pfn		= __phys_to_pfn(TS78XX_FPGA_REGS_PHYS_BASE),
+		.length		= TS78XX_FPGA_REGS_SIZE,
+		.type		= MT_DEVICE,
+	},
+};
+
+void __init ts78xx_map_io(void)
+{
+	orion5x_map_io();
+	iotable_init(ts78xx_io_desc, ARRAY_SIZE(ts78xx_io_desc));
+}
+
+/*****************************************************************************
+ * 512kB NOR Boot Flash - the chip is a M25P40
+ ****************************************************************************/
+static struct mtd_partition ts78xx_nor_boot_flash_resources[] = {
+	{
+		.name		= "ts-bootrom",
+		.offset		= 0,
+		/* only the first 256kB is used */
+		.size		= SZ_256K,
+		.mask_flags	= MTD_WRITEABLE,
+	},
+};
+
+static struct physmap_flash_data ts78xx_nor_boot_flash_data = {
+	.width		= 1,
+	.parts		= ts78xx_nor_boot_flash_resources,
+	.nr_parts	= ARRAY_SIZE(ts78xx_nor_boot_flash_resources),
+};
+
+static struct resource ts78xx_nor_boot_flash_resource = {
+	.flags		= IORESOURCE_MEM,
+	.start		= TS78XX_NOR_BOOT_BASE,
+	.end		= TS78XX_NOR_BOOT_BASE + TS78XX_NOR_BOOT_SIZE - 1,
+};
+
+static struct platform_device ts78xx_nor_boot_flash = {
+	.name		= "physmap-flash",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &ts78xx_nor_boot_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &ts78xx_nor_boot_flash_resource,
+};
+
+/*****************************************************************************
+ * Ethernet
+ ****************************************************************************/
+static struct mv643xx_eth_platform_data ts78xx_eth_data = {
+	.phy_addr	= 0,
+	.force_phy_addr = 1,
+};
+
+/*****************************************************************************
+ * RTC M48T86 - nicked^Wborrowed from arch/arm/mach-ep93xx/ts72xx.c
+ ****************************************************************************/
+#ifdef CONFIG_RTC_DRV_M48T86
+static unsigned char ts78xx_rtc_readbyte(unsigned long addr)
+{
+	writeb(addr, TS78XX_FPGA_REGS_RTC_CTRL);
+	return readb(TS78XX_FPGA_REGS_RTC_DATA);
+}
+
+static void ts78xx_rtc_writebyte(unsigned char value, unsigned long addr)
+{
+	writeb(addr, TS78XX_FPGA_REGS_RTC_CTRL);
+	writeb(value, TS78XX_FPGA_REGS_RTC_DATA);
+}
+
+static struct m48t86_ops ts78xx_rtc_ops = {
+	.readbyte	= ts78xx_rtc_readbyte,
+	.writebyte	= ts78xx_rtc_writebyte,
+};
+
+static struct platform_device ts78xx_rtc_device = {
+	.name		= "rtc-m48t86",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &ts78xx_rtc_ops,
+	},
+	.num_resources	= 0,
+};
+
+/*
+ * TS uses some of the user storage space on the RTC chip so see if it is
+ * present; as it's an optional feature at purchase time and not all boards
+ * will have it present
+ *
+ * I've used the method TS use in their rtc7800.c example for the detection
+ *
+ * TODO: track down a guinea pig without an RTC to see if we can work out a
+ * 		better RTC detection routine
+ */
+static int __init ts78xx_rtc_init(void)
+{
+	unsigned char tmp_rtc0, tmp_rtc1;
+
+	tmp_rtc0 = ts78xx_rtc_readbyte(126);
+	tmp_rtc1 = ts78xx_rtc_readbyte(127);
+
+	ts78xx_rtc_writebyte(0x00, 126);
+	ts78xx_rtc_writebyte(0x55, 127);
+	if (ts78xx_rtc_readbyte(127) == 0x55) {
+		ts78xx_rtc_writebyte(0xaa, 127);
+		if (ts78xx_rtc_readbyte(127) == 0xaa
+				&& ts78xx_rtc_readbyte(126) == 0x00) {
+			ts78xx_rtc_writebyte(tmp_rtc0, 126);
+			ts78xx_rtc_writebyte(tmp_rtc1, 127);
+			platform_device_register(&ts78xx_rtc_device);
+			return 1;
+		}
+	}
+
+	return 0;
+};
+#else
+static int __init ts78xx_rtc_init(void)
+{
+	return 0;
+}
+#endif
+
+/*****************************************************************************
+ * SATA
+ ****************************************************************************/
+static struct mv_sata_platform_data ts78xx_sata_data = {
+	.n_ports	= 2,
+};
+
+/*****************************************************************************
+ * print some information regarding the board
+ ****************************************************************************/
+static void __init ts78xx_print_board_id(void)
+{
+	unsigned int board_info;
+
+	board_info = readl(TS78XX_FPGA_REGS_SYSCON_ID);
+	printk(KERN_INFO "TS-78xx Info: FPGA rev=%.2x, Board Magic=%.6x, ",
+				board_info & 0xff,
+				(board_info >> 8) & 0xffffff);
+	board_info = readl(TS78XX_FPGA_REGS_SYSCON_LCDI);
+	printk("JP1=%d, JP2=%d\n",
+				(board_info >> 30) & 0x1,
+				(board_info >> 31) & 0x1);
+};
+
+/*****************************************************************************
+ * General Setup
+ ****************************************************************************/
+static struct orion5x_mpp_mode ts78xx_mpp_modes[] __initdata = {
+	{  0, MPP_UNUSED },
+	{  1, MPP_GPIO },		/* JTAG Clock */
+	{  2, MPP_GPIO },		/* JTAG Data In */
+	{  3, MPP_GPIO },		/* Lat ECP2 256 FPGA - PB2B */
+	{  4, MPP_GPIO },		/* JTAG Data Out */
+	{  5, MPP_GPIO },		/* JTAG TMS */
+	{  6, MPP_GPIO },		/* Lat ECP2 256 FPGA - PB31A_CLK4+ */
+	{  7, MPP_GPIO },		/* Lat ECP2 256 FPGA - PB22B */
+	{  8, MPP_UNUSED },
+	{  9, MPP_UNUSED },
+	{ 10, MPP_UNUSED },
+	{ 11, MPP_UNUSED },
+	{ 12, MPP_UNUSED },
+	{ 13, MPP_UNUSED },
+	{ 14, MPP_UNUSED },
+	{ 15, MPP_UNUSED },
+	{ 16, MPP_UART },
+	{ 17, MPP_UART },
+	{ 18, MPP_UART },
+	{ 19, MPP_UART },
+	{ -1 },
+};
+
+static void __init ts78xx_init(void)
+{
+	/*
+	 * Setup basic Orion functions. Need to be called early.
+	 */
+	orion5x_init();
+
+	ts78xx_print_board_id();
+
+	orion5x_mpp_conf(ts78xx_mpp_modes);
+
+	/*
+	 * MPP[20] PCI Clock Out 1
+	 * MPP[21] PCI Clock Out 0
+	 * MPP[22] Unused
+	 * MPP[23] Unused
+	 * MPP[24] Unused
+	 * MPP[25] Unused
+	 */
+
+	/*
+	 * Configure peripherals.
+	 */
+	orion5x_ehci0_init();
+	orion5x_ehci1_init();
+	orion5x_eth_init(&ts78xx_eth_data);
+	orion5x_sata_init(&ts78xx_sata_data);
+	orion5x_uart0_init();
+	orion5x_uart1_init();
+
+	orion5x_setup_dev_boot_win(TS78XX_NOR_BOOT_BASE,
+				   TS78XX_NOR_BOOT_SIZE);
+	platform_device_register(&ts78xx_nor_boot_flash);
+
+	if (!ts78xx_rtc_init())
+		printk(KERN_INFO "TS-78xx RTC not detected or enabled\n");
+}
+
+MACHINE_START(TS78XX, "Technologic Systems TS-78xx SBC")
+	/* Maintainer: Alexander Clouter <alex@digriz.org.uk> */
+	.phys_io	= ORION5X_REGS_PHYS_BASE,
+	.io_pg_offst	= ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
+	.boot_params	= 0x00000100,
+	.init_machine	= ts78xx_init,
+	.map_io		= ts78xx_map_io,
+	.init_irq	= orion5x_init_irq,
+	.timer		= &orion5x_timer,
+MACHINE_END