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linux-sg2042/arch/arm/mach-orion5x/ts78xx-setup.c

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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.
*/
#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 <mach/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_xor_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
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