[ARM] 4476/1: EM7210/SS4000E support

This patch adds the basic support for the em7210 board. It is similar to
the iq31244 board and can be found on Intel "Baxter Creek" ss4000e nas.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Arnaud Patard 2007-07-15 20:12:23 +01:00 committed by Russell King
parent 9a79b22741
commit a8135fcfd0
5 changed files with 213 additions and 2 deletions

View file

@ -42,6 +42,13 @@ config IOP3XX_ATU
Say N if the IOP is an add in card, the host system owns the PCI Say N if the IOP is an add in card, the host system owns the PCI
bus in this case. bus in this case.
config MACH_EM7210
bool "Enable support for the Lanner EM7210"
help
Say Y here if you want to run your kernel on the Lanner EM7210
board. Say also Y here if you have a SS4000e Baxter Creek NAS
appliance."
endmenu endmenu
endif endif

View file

@ -11,3 +11,4 @@ obj-$(CONFIG_MACH_GLANTANK) += glantank.o
obj-$(CONFIG_ARCH_IQ80321) += iq80321.o obj-$(CONFIG_ARCH_IQ80321) += iq80321.o
obj-$(CONFIG_ARCH_IQ31244) += iq31244.o obj-$(CONFIG_ARCH_IQ31244) += iq31244.o
obj-$(CONFIG_MACH_N2100) += n2100.o obj-$(CONFIG_MACH_N2100) += n2100.o
obj-$(CONFIG_MACH_EM7210) += em7210.o

View file

@ -0,0 +1,202 @@
/*
* arch/arm/mach-iop32x/em7210.c
*
* Board support code for the Lanner EM7210 platforms.
*
* Based on arch/arm/mach-iop32x/iq31244.c file.
*
* Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <asm/hardware.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/pci.h>
#include <asm/mach/time.h>
#include <asm/mach-types.h>
#include <asm/arch/time.h>
static void __init em7210_timer_init(void)
{
/* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */
/* 33.333 MHz crystal. */
iop_init_time(200000000);
}
static struct sys_timer em7210_timer = {
.init = em7210_timer_init,
.offset = iop_gettimeoffset,
};
/*
* EM7210 I/O
*/
static struct map_desc em7210_io_desc[] __initdata = {
{ /* on-board devices */
.virtual = IQ31244_UART,
.pfn = __phys_to_pfn(IQ31244_UART),
.length = 0x00100000,
.type = MT_DEVICE,
},
};
void __init em7210_map_io(void)
{
iop3xx_map_io();
iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));
}
/*
* EM7210 PCI
*/
#define INTA IRQ_IOP32X_XINT0
#define INTB IRQ_IOP32X_XINT1
#define INTC IRQ_IOP32X_XINT2
#define INTD IRQ_IOP32X_XINT3
static int __init
em7210_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
static int pci_irq_table[][4] = {
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{INTB, INTB, INTB, INTB}, /* console / uart */
{INTA, INTA, INTA, INTA}, /* 1st 82541 */
{INTD, INTD, INTD, INTD}, /* 2nd 82541 */
{INTC, INTC, INTC, INTC}, /* GD31244 */
{INTD, INTA, INTA, INTA}, /* mini-PCI */
{INTD, INTC, INTA, INTA}, /* NEC USB */
};
if (pin < 1 || pin > 4)
return -1;
return pci_irq_table[slot % 6][pin - 1];
}
static struct hw_pci em7210_pci __initdata = {
.swizzle = pci_std_swizzle,
.nr_controllers = 1,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit,
.scan = iop3xx_pci_scan_bus,
.map_irq = em7210_pci_map_irq,
};
static int __init em7210_pci_init(void)
{
if (machine_is_em7210())
pci_common_init(&em7210_pci);
return 0;
}
subsys_initcall(em7210_pci_init);
/*
* EM7210 Flash
*/
static struct physmap_flash_data em7210_flash_data = {
.width = 2,
};
static struct resource em7210_flash_resource = {
.start = 0xf0000000,
.end = 0xf1ffffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device em7210_flash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &em7210_flash_data,
},
.num_resources = 1,
.resource = &em7210_flash_resource,
};
/*
* EM7210 UART
* The physical address of the serial port is 0xfe800000,
* so it can be used for physical and virtual address.
*/
static struct plat_serial8250_port em7210_serial_port[] = {
{
.mapbase = IQ31244_UART,
.membase = (char *)IQ31244_UART,
.irq = IRQ_IOP32X_XINT1,
.flags = UPF_SKIP_TEST,
.iotype = UPIO_MEM,
.regshift = 0,
.uartclk = 1843200,
},
{ },
};
static struct resource em7210_uart_resource = {
.start = IQ31244_UART,
.end = IQ31244_UART + 7,
.flags = IORESOURCE_MEM,
};
static struct platform_device em7210_serial_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = em7210_serial_port,
},
.num_resources = 1,
.resource = &em7210_uart_resource,
};
void em7210_power_off(void)
{
*IOP3XX_GPOE &= 0xfe;
*IOP3XX_GPOD |= 0x01;
}
static void __init em7210_init_machine(void)
{
platform_device_register(&em7210_serial_device);
platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device);
platform_device_register(&em7210_flash_device);
platform_device_register(&iop3xx_dma_0_channel);
platform_device_register(&iop3xx_dma_1_channel);
pm_power_off = em7210_power_off;
}
MACHINE_START(EM7210, "Lanner EM7210")
.phys_io = IQ31244_UART,
.io_pg_offst = ((IQ31244_UART) >> 18) & 0xfffc,
.boot_params = 0xa0000100,
.map_io = em7210_map_io,
.init_irq = iop32x_init_irq,
.timer = &em7210_timer,
.init_machine = em7210_init_machine,
MACHINE_END

View file

@ -63,7 +63,8 @@ void __init iop32x_init_irq(void)
if (machine_is_glantank() || if (machine_is_glantank() ||
machine_is_iq80321() || machine_is_iq80321() ||
machine_is_iq31244() || machine_is_iq31244() ||
machine_is_n2100()) machine_is_n2100() ||
machine_is_em7210())
*IOP3XX_PCIIRSR = 0x0f; *IOP3XX_PCIIRSR = 0x0f;
for (i = 0; i < NR_IRQS; i++) { for (i = 0; i < NR_IRQS; i++) {

View file

@ -26,7 +26,7 @@ static __inline__ void __arch_decomp_setup(unsigned long arch_id)
{ {
if (machine_is_iq80321()) if (machine_is_iq80321())
uart_base = (volatile u8 *)IQ80321_UART; uart_base = (volatile u8 *)IQ80321_UART;
else if (machine_is_iq31244()) else if (machine_is_iq31244() || machine_is_em7210())
uart_base = (volatile u8 *)IQ31244_UART; uart_base = (volatile u8 *)IQ31244_UART;
else else
uart_base = (volatile u8 *)0xfe800000; uart_base = (volatile u8 *)0xfe800000;