[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>

3 files changed, 284 insertions, 0 deletions

diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig
index a8f732b6131c..8609f811bd84 100644
--- a/arch/arm/mach-orion5x/Kconfig
+++ b/arch/arm/mach-orion5x/Kconfig
@@ -56,6 +56,12 @@ config MACH_WRT350N_V2
           Say 'Y' here if you want your kernel to support the
           Linksys WRT350N v2 platform.
 
+config MACH_TS78XX
+        bool "Technologic Systems TS-78xx"
+        help
+          Say 'Y' here if you want your kernel to support the
+          Technologic Systems TS-78xx platform.
+
 config MACH_MV2120
         bool "HP Media Vault mv2120"
         help
diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile
index 1d1f8556303d..d0c9f570f943 100644
--- a/arch/arm/mach-orion5x/Makefile
+++ b/arch/arm/mach-orion5x/Makefile
@@ -7,4 +7,5 @@ obj-$(CONFIG_MACH_DNS323)	+= dns323-setup.o
 obj-$(CONFIG_MACH_TS209)        += ts209-setup.o tsx09-common.o
 obj-$(CONFIG_MACH_TS409)        += ts409-setup.o tsx09-common.o
 obj-$(CONFIG_MACH_WRT350N_V2)   += wrt350n-v2-setup.o
+obj-$(CONFIG_MACH_TS78XX)       += ts78xx-setup.o
 obj-$(CONFIG_MACH_MV2120)       += mv2120-setup.o
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