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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/arm/mach-cns3xxx/cns3420vb.c
Initial import
Diffstat (limited to 'arch/arm/mach-cns3xxx/cns3420vb.c')
-rw-r--r--arch/arm/mach-cns3xxx/cns3420vb.c255
1 files changed, 255 insertions, 0 deletions
diff --git a/arch/arm/mach-cns3xxx/cns3420vb.c b/arch/arm/mach-cns3xxx/cns3420vb.c
new file mode 100644
index 000000000..6428bcc77
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+++ b/arch/arm/mach-cns3xxx/cns3420vb.c
@@ -0,0 +1,255 @@
+/*
+ * 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