- 根目录:
- arch
- arm
- mach-cns3xxx
- cns3420vb.c
/*
* Cavium Networks CNS3420 Validation Board
*
* Copyright 2000 Deep Blue Solutions Ltd
* Copyright 2008 ARM Limited
* Copyright 2008 Cavium Networks
* Scott Shu
* Copyright 2010 MontaVista Software, LLC.
* Anton Vorontsov <avorontsov@mvista.com>
*
* This file 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/init.h>
#include <linux/kernel.h>
#include <linux/compiler.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <linux/usb/ehci_pdriver.h>
#include <linux/usb/ohci_pdriver.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include "cns3xxx.h"
#include "pm.h"
#include "core.h"
#include "devices.h"
/*
* NOR Flash
*/
static struct mtd_partition cns3420_nor_partitions[] = {
{
.name = "uboot",
.size = 0x00040000,
.offset = 0,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "kernel",
.size = 0x004C0000,
.offset = MTDPART_OFS_APPEND,
}, {
.name = "filesystem",
.size = 0x7000000,
.offset = MTDPART_OFS_APPEND,
}, {
.name = "filesystem2",
.size = 0x0AE0000,
.offset = MTDPART_OFS_APPEND,
}, {
.name = "ubootenv",
.size = MTDPART_SIZ_FULL,
.offset = MTDPART_OFS_APPEND,
},
};
static struct physmap_flash_data cns3420_nor_pdata = {
.width = 2,
.parts = cns3420_nor_partitions,
.nr_parts = ARRAY_SIZE(cns3420_nor_partitions),
};
static struct resource cns3420_nor_res = {
.start = CNS3XXX_FLASH_BASE,
.end = CNS3XXX_FLASH_BASE + SZ_128M - 1,
.flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
};
static struct platform_device cns3420_nor_pdev = {
.name = "physmap-flash",
.id = 0,
.resource = &cns3420_nor_res,
.num_resources = 1,
.dev = {
.platform_data = &cns3420_nor_pdata,
},
};
/*
* UART
*/
static void __init cns3420_early_serial_setup(void)
{
#ifdef CONFIG_SERIAL_8250_CONSOLE
static struct uart_port cns3420_serial_port = {
.membase = (void __iomem *)CNS3XXX_UART0_BASE_VIRT,
.mapbase = CNS3XXX_UART0_BASE,
.irq = IRQ_CNS3XXX_UART0,
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_TYPE,
.regshift = 2,
.uartclk = 24000000,
.line = 0,
.type = PORT_16550A,
.fifosize = 16,
};
early_serial_setup(&cns3420_serial_port);
#endif
}
/*
* USB
*/
static struct resource cns3xxx_usb_ehci_resources[] = {
[0] = {
.start = CNS3XXX_USB_BASE,
.end = CNS3XXX_USB_BASE + SZ_16M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_CNS3XXX_USB_EHCI,
.flags = IORESOURCE_IRQ,
},
};
static u64 cns3xxx_usb_ehci_dma_mask = DMA_BIT_MASK(32);
static int csn3xxx_usb_power_on(struct platform_device *pdev)
{
/*
* EHCI and OHCI share the same clock and power,
* resetting twice would cause the 1st controller been reset.
* Therefore only do power up at the first up device, and
* power down at the last down device.
*
* Set USB AHB INCR length to 16
*/
if (atomic_inc_return(&usb_pwr_ref) == 1) {
cns3xxx_pwr_power_up(1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_PLL_USB);
cns3xxx_pwr_clk_en(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
cns3xxx_pwr_soft_rst(1 << PM_SOFT_RST_REG_OFFST_USB_HOST);
__raw_writel((__raw_readl(MISC_CHIP_CONFIG_REG) | (0X2 << 24)),
MISC_CHIP_CONFIG_REG);
}
return 0;
}
static void csn3xxx_usb_power_off(struct platform_device *pdev)
{
/*
* EHCI and OHCI share the same clock and power,
* resetting twice would cause the 1st controller been reset.
* Therefore only do power up at the first up device, and
* power down at the last down device.
*/
if (atomic_dec_return(&usb_pwr_ref) == 0)
cns3xxx_pwr_clk_dis(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
}
static struct usb_ehci_pdata cns3xxx_usb_ehci_pdata = {
.power_on = csn3xxx_usb_power_on,
.power_off = csn3xxx_usb_power_off,
};
static struct platform_device cns3xxx_usb_ehci_device = {
.name = "ehci-platform",
.num_resources = ARRAY_SIZE(cns3xxx_usb_ehci_resources),
.resource = cns3xxx_usb_ehci_resources,
.dev = {
.dma_mask = &cns3xxx_usb_ehci_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &cns3xxx_usb_ehci_pdata,
},
};
static struct resource cns3xxx_usb_ohci_resources[] = {
[0] = {
.start = CNS3XXX_USB_OHCI_BASE,
.end = CNS3XXX_USB_OHCI_BASE + SZ_16M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_CNS3XXX_USB_OHCI,
.flags = IORESOURCE_IRQ,
},
};
static u64 cns3xxx_usb_ohci_dma_mask = DMA_BIT_MASK(32);
static struct usb_ohci_pdata cns3xxx_usb_ohci_pdata = {
.num_ports = 1,
.power_on = csn3xxx_usb_power_on,
.power_off = csn3xxx_usb_power_off,
};
static struct platform_device cns3xxx_usb_ohci_device = {
.name = "ohci-platform",
.num_resources = ARRAY_SIZE(cns3xxx_usb_ohci_resources),
.resource = cns3xxx_usb_ohci_resources,
.dev = {
.dma_mask = &cns3xxx_usb_ohci_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &cns3xxx_usb_ohci_pdata,
},
};
/*
* Initialization
*/
static struct platform_device *cns3420_pdevs[] __initdata = {
&cns3420_nor_pdev,
&cns3xxx_usb_ehci_device,
&cns3xxx_usb_ohci_device,
};
static void __init cns3420_init(void)
{
cns3xxx_l2x0_init();
platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs));
cns3xxx_ahci_init();
cns3xxx_sdhci_init();
pm_power_off = cns3xxx_power_off;
}
static struct map_desc cns3420_io_desc[] __initdata = {
{
.virtual = CNS3XXX_UART0_BASE_VIRT,
.pfn = __phys_to_pfn(CNS3XXX_UART0_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static void __init cns3420_map_io(void)
{
cns3xxx_map_io();
iotable_init(cns3420_io_desc, ARRAY_SIZE(cns3420_io_desc));
cns3420_early_serial_setup();
}
MACHINE_START(CNS3420VB, "Cavium Networks CNS3420 Validation Board")
.atag_offset = 0x100,
.map_io = cns3420_map_io,
.init_irq = cns3xxx_init_irq,
.init_time = cns3xxx_timer_init,
.init_machine = cns3420_init,
.init_late = cns3xxx_pcie_init_late,
.restart = cns3xxx_restart,
MACHINE_END