mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 02:39:48 +00:00
![Xia Kaixu](/assets/img/avatar_default.png)
The kernel panic occurs when running an allmodconfig kernel on OMAP4460. The inicall "cns3xxx_pcie_init" does not check which hardware it's running on and just tries to access to its specific registers. Now call it from .init_late callback from the two machine descriptors. Signed-off-by: Xia Kaixu <kaixu.xia@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Anton Vorontsov <anton@enomsg.org> Cc: Felix Fietkau <nbd@openwrt.org> Cc: Imre Kaloz <kaloz@openwrt.org> Cc: linaro-kernel@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org
255 lines
6.2 KiB
C
255 lines
6.2 KiB
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
|