diff options
Diffstat (limited to 'arch/arm/mach-orion5x/ts78xx-setup.c')
| -rw-r--r-- | arch/arm/mach-orion5x/ts78xx-setup.c | 277 |
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 0000000..77e9f35 --- /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 |