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Alexander Clouter
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Lennert Buytenhek
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Jun 22, 2008
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/* | ||
* 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. | ||
*/ | ||
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||
#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" | ||
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/***************************************************************************** | ||
* TS-78xx Info | ||
****************************************************************************/ | ||
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/* | ||
* 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 | ||
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#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) | ||
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#define TS78XX_FPGA_REGS_RTC_CTRL (TS78XX_FPGA_REGS_VIRT_BASE | 0x808) | ||
#define TS78XX_FPGA_REGS_RTC_DATA (TS78XX_FPGA_REGS_VIRT_BASE | 0x80c) | ||
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/* | ||
* 512kB NOR flash Device | ||
*/ | ||
#define TS78XX_NOR_BOOT_BASE 0xff800000 | ||
#define TS78XX_NOR_BOOT_SIZE SZ_512K | ||
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/***************************************************************************** | ||
* 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, | ||
}, | ||
}; | ||
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void __init ts78xx_map_io(void) | ||
{ | ||
orion5x_map_io(); | ||
iotable_init(ts78xx_io_desc, ARRAY_SIZE(ts78xx_io_desc)); | ||
} | ||
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/***************************************************************************** | ||
* 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, | ||
}, | ||
}; | ||
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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), | ||
}; | ||
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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, | ||
}; | ||
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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, | ||
}; | ||
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/***************************************************************************** | ||
* Ethernet | ||
****************************************************************************/ | ||
static struct mv643xx_eth_platform_data ts78xx_eth_data = { | ||
.phy_addr = 0, | ||
.force_phy_addr = 1, | ||
}; | ||
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/***************************************************************************** | ||
* 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); | ||
} | ||
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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); | ||
} | ||
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static struct m48t86_ops ts78xx_rtc_ops = { | ||
.readbyte = ts78xx_rtc_readbyte, | ||
.writebyte = ts78xx_rtc_writebyte, | ||
}; | ||
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static struct platform_device ts78xx_rtc_device = { | ||
.name = "rtc-m48t86", | ||
.id = -1, | ||
.dev = { | ||
.platform_data = &ts78xx_rtc_ops, | ||
}, | ||
.num_resources = 0, | ||
}; | ||
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/* | ||
* 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; | ||
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tmp_rtc0 = ts78xx_rtc_readbyte(126); | ||
tmp_rtc1 = ts78xx_rtc_readbyte(127); | ||
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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; | ||
} | ||
} | ||
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return 0; | ||
}; | ||
#else | ||
static int __init ts78xx_rtc_init(void) | ||
{ | ||
return 0; | ||
} | ||
#endif | ||
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/***************************************************************************** | ||
* SATA | ||
****************************************************************************/ | ||
static struct mv_sata_platform_data ts78xx_sata_data = { | ||
.n_ports = 2, | ||
}; | ||
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/***************************************************************************** | ||
* print some information regarding the board | ||
****************************************************************************/ | ||
static void __init ts78xx_print_board_id(void) | ||
{ | ||
unsigned int board_info; | ||
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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); | ||
}; | ||
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/***************************************************************************** | ||
* 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 }, | ||
}; | ||
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static void __init ts78xx_init(void) | ||
{ | ||
/* | ||
* Setup basic Orion functions. Need to be called early. | ||
*/ | ||
orion5x_init(); | ||
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ts78xx_print_board_id(); | ||
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orion5x_mpp_conf(ts78xx_mpp_modes); | ||
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/* | ||
* MPP[20] PCI Clock Out 1 | ||
* MPP[21] PCI Clock Out 0 | ||
* MPP[22] Unused | ||
* MPP[23] Unused | ||
* MPP[24] Unused | ||
* MPP[25] Unused | ||
*/ | ||
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/* | ||
* 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(); | ||
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orion5x_setup_dev_boot_win(TS78XX_NOR_BOOT_BASE, | ||
TS78XX_NOR_BOOT_SIZE); | ||
platform_device_register(&ts78xx_nor_boot_flash); | ||
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if (!ts78xx_rtc_init()) | ||
printk(KERN_INFO "TS-78xx RTC not detected or enabled\n"); | ||
} | ||
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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 |