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authorFlorian Fainelli <florian@openwrt.org>2015-03-28 18:18:38 +0000
committerFlorian Fainelli <florian@openwrt.org>2015-03-28 18:18:38 +0000
commitf51f3ee9bc0ebd26b28fa7687cc4b7dd6dadc1b4 (patch)
treeaa8328b4022f79dba09d9d2ecab611ddf17e7124 /target/linux/adm8668/files-3.18
parent26cf81b94b22a3cc95676ff63e6d69dd256de080 (diff)
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adm8668: add 3.18 support
Signed-off-by: Florian Fainelli <florian@openwrt.org> SVN-Revision: 45094
Diffstat (limited to 'target/linux/adm8668/files-3.18')
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/Kconfig2
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/Makefile6
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/Platform6
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/clock.c76
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/early_printk.c16
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/gpio.c123
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/irq.c126
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c196
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c95
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/setup.c36
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/time.c20
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/adm8668/u-boot.h52
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/adm8668.h69
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/asm/sizes.h56
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/gpio.h13
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/irq.h14
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/war.h25
-rw-r--r--target/linux/adm8668/files-3.18/arch/mips/pci/pci-adm8668.c200
-rw-r--r--target/linux/adm8668/files-3.18/drivers/mtd/maps/adm8668.c334
19 files changed, 1465 insertions, 0 deletions
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/Kconfig b/target/linux/adm8668/files-3.18/arch/mips/adm8668/Kconfig
new file mode 100644
index 0000000..2e7281f
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/Kconfig
@@ -0,0 +1,2 @@
+config ARM_AMBA
+ def_bool y
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/Makefile b/target/linux/adm8668/files-3.18/arch/mips/adm8668/Makefile
new file mode 100644
index 0000000..515c3a4
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/Makefile
@@ -0,0 +1,6 @@
+#
+# something witty --neutronscott
+#
+
+obj-y := irq.o prom.o platform.o gpio.o \
+ setup.o clock.o time.o early_printk.o \
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/Platform b/target/linux/adm8668/files-3.18/arch/mips/adm8668/Platform
new file mode 100644
index 0000000..c70cd27
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/Platform
@@ -0,0 +1,6 @@
+#
+# Infineon ADM8668 WildPass
+#
+platform-$(CONFIG_ADM8668) += adm8668/
+cflags-$(CONFIG_ADM8668) += -I$(srctree)/arch/mips/include/asm/mach-adm8668
+load-$(CONFIG_ADM8668) += 0xffffffff80002000
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/clock.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/clock.c
new file mode 100644
index 0000000..1e010fc
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/clock.c
@@ -0,0 +1,76 @@
+/*
+ * ADM8668 minimal clock support
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under the terms of the GPLv2
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+
+#include <adm8668.h>
+
+struct clk {
+ unsigned long rate;
+};
+
+static struct clk uart_clk = {
+ .rate = 62500000,
+};
+
+static struct clk sys_clk;
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+ const char *lookup = id;
+
+ if (dev)
+ lookup = dev_name(dev);
+
+ if (!strcmp(lookup, "apb:uart0"))
+ return &uart_clk;
+ if (!strcmp(lookup, "sys"))
+ return &sys_clk;
+
+ return ERR_PTR(-ENOENT);
+}
+EXPORT_SYMBOL(clk_get);
+
+int clk_enable(struct clk *clk)
+{
+ return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ return clk->rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+void clk_put(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_put);
+
+void __init adm8668_init_clocks(void)
+{
+ u32 adj;
+
+ /* adjustable clock selection
+ * CR3 bit 14~11, 0000 -> 175MHz, 0001 -> 180MHz, etc...
+ */
+ adj = (ADM8668_CONFIG_REG(ADM8668_CR3) >> 11) & 0xf;
+ sys_clk.rate = 175000000 + (adj * 5000000);
+
+ pr_info("ADM8668 CPU clock: %lu MHz\n", sys_clk.rate / 1000000);
+}
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/early_printk.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/early_printk.c
new file mode 100644
index 0000000..03dd72a
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/early_printk.c
@@ -0,0 +1,16 @@
+#include <linux/io.h>
+#include <linux/amba/serial.h>
+#include <adm8668.h>
+
+#define UART_READ(r) \
+ __raw_readl((void __iomem *)(KSEG1ADDR(ADM8668_UART0_BASE) + (r)))
+
+#define UART_WRITE(v, r) \
+ __raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM8668_UART0_BASE) + (r)))
+
+void prom_putchar(char c)
+{
+ UART_WRITE(c, UART01x_DR);
+ while ((UART_READ(UART01x_FR) & UART01x_FR_TXFF) != 0)
+ ;
+}
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/gpio.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/gpio.c
new file mode 100644
index 0000000..fb39f7f
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/gpio.c
@@ -0,0 +1,123 @@
+/*
+ * Infineon/ADMTek ADM8668 WildPass GPIO support
+ *
+ * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under the terms of GPLv2.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+
+#include <adm8668.h>
+
+#define GPIO_MASK 0x3f
+
+#define GPIO_IN_OFS 0
+#define GPIO_OUT_OFS 6
+#define GPIO_OE_OFS 12
+
+struct adm8668_gpio_chip {
+ void __iomem *base;
+ struct gpio_chip chip;
+};
+
+static int adm8668_gpio_dir_out(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct adm8668_gpio_chip *c =
+ container_of(chip, struct adm8668_gpio_chip, chip);
+ u32 mask;
+
+ /* clear input, set output enable and output value */
+ mask = __raw_readl(c->base);
+ mask &= ~(1 << offset);
+ mask |= (1 << (offset + GPIO_OE_OFS));
+ if (value)
+ mask |= (1 << (offset + GPIO_OUT_OFS));
+ else
+ mask &= ~(1 << (offset + GPIO_OUT_OFS));
+ __raw_writel(mask, c->base);
+
+ return 0;
+}
+
+static int adm8668_gpio_dir_in(struct gpio_chip *chip,
+ unsigned offset)
+{
+ struct adm8668_gpio_chip *c =
+ container_of(chip, struct adm8668_gpio_chip, chip);
+ u32 mask;
+
+ mask = __raw_readl(c->base);
+ mask &= ~(((1 << (offset + GPIO_OE_OFS)) | (1 << (offset + GPIO_OUT_OFS))));
+ mask |= (1 << offset);
+ __raw_writel(mask, c->base);
+
+ return 0;
+}
+
+static void adm8668_gpio_set(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct adm8668_gpio_chip *c =
+ container_of(chip, struct adm8668_gpio_chip, chip);
+ u32 mask;
+
+ mask = __raw_readl(c->base);
+ if (value)
+ mask |= (1 << (offset + GPIO_OUT_OFS));
+ else
+ mask &= ~(1 << (offset + GPIO_OUT_OFS));
+ __raw_writel(mask, c->base);
+}
+
+static int adm8668_gpio_get(struct gpio_chip *chip,
+ unsigned offset)
+{
+ struct adm8668_gpio_chip *c =
+ container_of(chip, struct adm8668_gpio_chip, chip);
+ u32 value;
+
+ value = __raw_readl(c->base) & GPIO_MASK;
+
+ return value & (1 << offset);
+}
+
+static struct adm8668_gpio_chip adm8668_gpio_cpu = {
+ .base = (void __iomem *)KSEG1ADDR(ADM8668_CONFIG_BASE + CRGPIO_REG),
+ .chip = {
+ .label = "adm8668-cpu-gpio",
+ .direction_output = adm8668_gpio_dir_out,
+ .direction_input = adm8668_gpio_dir_in,
+ .set = adm8668_gpio_set,
+ .get = adm8668_gpio_get,
+ .ngpio = 6,
+ },
+};
+
+static struct adm8668_gpio_chip adm8668_gpio_wlan = {
+ .base = (void __iomem *)KSEG1ADDR(ADM8668_WLAN_BASE + GPIO_REG),
+ .chip = {
+ .label = "adm8668-wlan-gpio",
+ .direction_output = adm8668_gpio_dir_out,
+ .direction_input = adm8668_gpio_dir_in,
+ .set = adm8668_gpio_set,
+ .get = adm8668_gpio_get,
+ .ngpio = 6,
+ .base = 6,
+ },
+};
+
+static int __init adm8668_gpio_init(void)
+{
+ int ret;
+
+ ret = gpiochip_add(&adm8668_gpio_cpu.chip);
+ if (ret)
+ return ret;
+
+ return gpiochip_add(&adm8668_gpio_wlan.chip);
+}
+arch_initcall(adm8668_gpio_init);
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/irq.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/irq.c
new file mode 100644
index 0000000..9d3b2b9
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/irq.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/pm.h>
+#include <linux/irq.h>
+#include <asm/mipsregs.h>
+#include <asm/irq_cpu.h>
+#include <asm/irq.h>
+#include <adm8668.h>
+
+/* interrupt controller */
+#define IRQ_STATUS_REG 0x00 /* Read */
+#define IRQ_ENABLE_REG 0x08 /* Read/Write */
+#define IRQ_DISABLE_REG 0x0C /* Write */
+
+#define IRQ_MASK 0xffff
+
+static inline void intc_write_reg(u32 val, unsigned int reg)
+{
+ void __iomem *base = (void __iomem *)KSEG1ADDR(ADM8668_INTC_BASE);
+
+ __raw_writel(val, base + reg);
+}
+
+static inline u32 intc_read_reg(unsigned int reg)
+{
+ void __iomem *base = (void __iomem *)KSEG1ADDR(ADM8668_INTC_BASE);
+
+ return __raw_readl(base + reg);
+}
+
+static void adm8668_irq_cascade(void)
+{
+ int irq;
+ u32 intsrc;
+
+ intsrc = intc_read_reg(IRQ_STATUS_REG) & IRQ_MASK;
+ if (intsrc) {
+ irq = fls(intsrc) - 1;
+ do_IRQ(irq);
+ } else
+ spurious_interrupt();
+}
+
+/*
+ * System irq dispatch
+ */
+void plat_irq_dispatch(void)
+{
+ unsigned int pending;
+
+ pending = read_c0_cause() & read_c0_status() & ST0_IM;
+
+ /* timer interrupt, that we renumbered */
+ if (pending & STATUSF_IP7)
+ do_IRQ(MIPS_CPU_IRQ_BASE + 7);
+ else if (pending & STATUSF_IP2)
+ adm8668_irq_cascade();
+ else
+ spurious_interrupt();
+}
+
+/*
+ * enable 8668 irq
+ */
+static void enable_adm8668_irq(struct irq_data *d)
+{
+ intc_write_reg((1 << d->irq), IRQ_ENABLE_REG);
+}
+
+
+static void ack_adm8668_irq(struct irq_data *d)
+{
+ intc_write_reg((1 << d->irq), IRQ_DISABLE_REG);
+}
+
+/*
+ * system irq type
+ */
+
+static struct irq_chip adm8668_irq_type = {
+ .name = "adm8668",
+ .irq_ack = ack_adm8668_irq,
+ .irq_mask = ack_adm8668_irq,
+ .irq_unmask = enable_adm8668_irq
+};
+
+/*
+ * irq init
+ */
+static void __init init_adm8668_irqs(void)
+{
+ int i;
+
+ /* disable all interrupts for the moment */
+ intc_write_reg(IRQ_MASK, IRQ_DISABLE_REG);
+
+ for (i = 0; i <= ADM8668_IRQ_MAX; i++)
+ irq_set_chip_and_handler(i, &adm8668_irq_type,
+ handle_level_irq);
+
+ /* hw0 is where our interrupts are uh.. interrupted at. */
+ set_c0_status(IE_IRQ0);
+}
+
+/*
+ * system init
+ */
+void __init arch_init_irq(void)
+{
+ mips_cpu_irq_init();
+ init_adm8668_irqs();
+}
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c
new file mode 100644
index 0000000..9e40691
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/platform.c
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/tulip.h>
+#include <linux/usb/ehci_pdriver.h>
+#include <linux/mtd/physmap.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
+
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <adm8668.h>
+
+#define ADM8868_UBOOT_ENV 0x20000
+#define ADM8868_UBOOT_WAN_MAC 0x5ac
+#define ADM8868_UBOOT_LAN_MAC 0x404
+
+static void adm8668_uart_set_mctrl(struct amba_device *dev,
+ void __iomem *base,
+ unsigned int mcrtl)
+{
+}
+
+static struct amba_pl010_data adm8668_uart0_data = {
+ .set_mctrl = adm8668_uart_set_mctrl,
+};
+
+static struct amba_device adm8668_uart0_device = {
+ .dev = {
+ .init_name = "apb:uart0",
+ .platform_data = &adm8668_uart0_data,
+ },
+ .res = {
+ .start = ADM8668_UART0_BASE,
+ .end = ADM8668_UART0_BASE + 0xF,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = {
+ ADM8668_UART0_IRQ,
+ -1
+ },
+ .periphid = 0x0041010,
+};
+
+static struct resource eth0_resources[] = {
+ {
+ .start = ADM8668_LAN_BASE,
+ .end = ADM8668_LAN_BASE + 256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = ADM8668_LAN_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct tulip_platform_data eth0_pdata = {
+ .chip_id = ADM8668,
+};
+
+static struct platform_device adm8668_eth0_device = {
+ .name = "tulip",
+ .id = 0,
+ .resource = eth0_resources,
+ .num_resources = ARRAY_SIZE(eth0_resources),
+ .dev.platform_data = &eth0_pdata,
+};
+
+static struct resource eth1_resources[] = {
+ {
+ .start = ADM8668_WAN_BASE,
+ .end = ADM8668_WAN_BASE + 256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = ADM8668_WAN_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct tulip_platform_data eth1_pdata = {
+ .chip_id = ADM8668,
+};
+
+static struct platform_device adm8668_eth1_device = {
+ .name = "tulip",
+ .id = 1,
+ .resource = eth1_resources,
+ .num_resources = ARRAY_SIZE(eth1_resources),
+ .dev.platform_data = &eth1_pdata,
+};
+
+static struct resource usb_resources[] = {
+ {
+ .start = ADM8668_USB_BASE,
+ .end = ADM8668_USB_BASE + 0x1FFFFF,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = ADM8668_USB_IRQ,
+ .end = ADM8668_USB_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct usb_ehci_pdata usb_pdata = {
+ .caps_offset = 0x100,
+ .has_tt = 1,
+};
+
+static struct platform_device adm8668_usb_device = {
+ .name = "ehci-platform",
+ .id = -1,
+ .resource = usb_resources,
+ .num_resources = ARRAY_SIZE(usb_resources),
+ .dev.platform_data = &usb_pdata,
+};
+
+static struct platform_device *adm8668_devs[] = {
+ &adm8668_eth0_device,
+ &adm8668_eth1_device,
+ &adm8668_usb_device,
+};
+
+static void adm8668_fetch_mac(int unit)
+{
+ u8 *mac;
+ u32 offset;
+ struct tulip_platform_data *pdata;
+
+ switch (unit) {
+ case -1:
+ case 0:
+ offset = ADM8868_UBOOT_LAN_MAC;
+ pdata = &eth0_pdata;
+ break;
+ case 1:
+ offset = ADM8868_UBOOT_WAN_MAC;
+ pdata = &eth1_pdata;
+ break;
+ default:
+ pr_err("unsupported ethernet unit: %d\n", unit);
+ return;
+ }
+
+ mac = (u8 *)(KSEG1ADDR(ADM8668_SMEM1_BASE) + ADM8868_UBOOT_ENV + offset);
+
+ memcpy(pdata->mac, mac, sizeof(pdata->mac));
+}
+
+static void adm8668_ehci_workaround(void)
+{
+ u32 chipid;
+
+ chipid = ADM8668_CONFIG_REG(ADM8668_CR0);
+ ADM8668_CONFIG_REG(ADM8668_CR66) = 0x0C1600D9;
+
+ if (chipid == 0x86880001)
+ return;
+
+ ADM8668_CONFIG_REG(ADM8668_CR66) &= ~(3 << 20);
+ ADM8668_CONFIG_REG(ADM8668_CR66) |= (1 << 20);
+ pr_info("ADM8668: applied USB workaround\n");
+}
+
+
+int __init adm8668_devs_register(void)
+{
+ int ret;
+
+ ret = amba_device_register(&adm8668_uart0_device, &iomem_resource);
+ if (ret)
+ panic("failed to register AMBA UART");
+
+ adm8668_fetch_mac(0);
+ adm8668_fetch_mac(1);
+ adm8668_ehci_workaround();
+
+ return platform_add_devices(adm8668_devs, ARRAY_SIZE(adm8668_devs));
+}
+arch_initcall(adm8668_devs_register);
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c
new file mode 100644
index 0000000..24b77f8
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/prom.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ *
+ * based on work of rb532 prom.c
+ * Copyright (C) 2003, Peter Sadik <peter.sadik@idt.com>
+ * Copyright (C) 2005-2006, P.Christeas <p_christ@hol.gr>
+ * Copyright (C) 2007, Gabor Juhos <juhosg@openwrt.org>
+ * Felix Fietkau <nbd@openwrt.org>
+ * Florian Fainelli <florian@openwrt.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/console.h>
+#include <linux/string.h>
+#include <linux/serial_core.h>
+#include <asm/bootinfo.h>
+#include <adm8668.h>
+#include "u-boot.h"
+
+register volatile struct global_data *gd asm ("k0");
+
+void __init prom_free_prom_memory(void)
+{
+ /* No prom memory to free */
+}
+
+static inline int match_tag(char *arg, const char *tag)
+{
+ return strncmp(arg, tag, strlen(tag)) == 0;
+}
+
+static inline unsigned long tag2ul(char *arg, const char *tag)
+{
+ char *num;
+
+ num = arg + strlen(tag);
+ return simple_strtoul(num, 0, 10);
+}
+
+void __init prom_setup_cmdline(void)
+{
+ char *cp;
+ int prom_argc;
+ char **prom_argv;
+ int i;
+
+ prom_argc = fw_arg0;
+ prom_argv = (char **)KSEG0ADDR(fw_arg1);
+
+ cp = &(arcs_cmdline[0]);
+ for (i = 1; i < prom_argc; i++) {
+ prom_argv[i] = (char *)KSEG0ADDR(prom_argv[i]);
+
+ /* default bootargs has "console=/dev/ttyS0" yet console won't
+ * show up at all if you include the '/dev/' nowadays ... */
+ if (match_tag(prom_argv[i], "console=/dev/")) {
+ char *ptr = prom_argv[i] + strlen("console=/dev/");
+
+ strcpy(cp, "console=");
+ cp += strlen("console=");
+ strcpy(cp, ptr);
+ cp += strlen(ptr);
+ *cp++ = ' ';
+ continue;
+ }
+ strcpy(cp, prom_argv[i]);
+ cp += strlen(prom_argv[i]);
+ *cp++ = ' ';
+ }
+ if (prom_argc > 1)
+ --cp; /* trailing space */
+
+ *cp = '\0';
+}
+
+void __init prom_init(void)
+{
+ bd_t *bd = gd->bd;
+ int memsize;
+
+ memsize = bd->bi_memsize;
+ printk("Board info:\n");
+ printk(" RAM size: %d MB\n", (int)memsize/(1024*1024));
+ printk(" NOR start: %#lx\n", bd->bi_flashstart);
+ printk(" NOR size: %#lx\n", bd->bi_flashsize);
+
+ prom_setup_cmdline();
+ add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/setup.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/setup.c
new file mode 100644
index 0000000..b33c483
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/setup.c
@@ -0,0 +1,36 @@
+#include <linux/init.h>
+#include <linux/reboot.h>
+
+#include <asm/reboot.h>
+#include <adm8668.h>
+
+static void adm8668_restart(char *cmd)
+{
+ int i;
+
+ /* the real deal */
+ for (i = 0; i < 1000; i++)
+ ;
+ ADM8668_CONFIG_REG(ADM8668_CR1) = 1;
+}
+
+void __init plat_mem_setup(void)
+{
+ _machine_restart = adm8668_restart;
+}
+
+const char *get_system_type(void)
+{
+ unsigned long chipid = ADM8668_CONFIG_REG(ADM8668_CR0);
+ int product, revision;
+ static char ret[32];
+
+ product = chipid >> 16;
+ revision = chipid & 0xffff;
+
+ /* i getting fancy :\ */
+ snprintf(ret, sizeof(ret), "ADM%xr%x", product, revision);
+
+ return ret;
+}
+
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/time.c b/target/linux/adm8668/files-3.18/arch/mips/adm8668/time.c
new file mode 100644
index 0000000..87bdd66
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/time.c
@@ -0,0 +1,20 @@
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/clk.h>
+
+#include <asm/time.h>
+#include <adm8668.h>
+
+void __init plat_time_init(void)
+{
+ struct clk *sys_clk;
+
+ adm8668_init_clocks();
+
+ sys_clk = clk_get(NULL, "sys");
+ if (IS_ERR(sys_clk))
+ panic("unable to get system clock\n");
+
+ mips_hpt_frequency = clk_get_rate(sys_clk) / 2;
+}
+
diff --git a/target/linux/adm8668/files-3.18/arch/mips/adm8668/u-boot.h b/target/linux/adm8668/files-3.18/arch/mips/adm8668/u-boot.h
new file mode 100644
index 0000000..d9d2268
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/adm8668/u-boot.h
@@ -0,0 +1,52 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _U_BOOT_H_
+#define _U_BOOT_H_ 1
+
+typedef struct bd_info {
+ int bi_baudrate; /* serial console baudrate */
+ unsigned long bi_ip_addr; /* IP Address */
+ unsigned char bi_enetaddr[6]; /* Ethernet adress */
+ unsigned long bi_arch_number; /* unique id for this board */
+ unsigned long bi_boot_params; /* where this board expects params */
+ unsigned long bi_memstart; /* start of DRAM memory */
+ unsigned long bi_memsize; /* size of DRAM memory in bytes */
+ unsigned long bi_flashstart; /* start of FLASH memory */
+ unsigned long bi_flashsize; /* size of FLASH memory */
+ unsigned long bi_flashoffset; /* reserved area for startup monitor */
+} bd_t;
+
+struct global_data {
+ bd_t *bd; /* board data... */
+ unsigned long flags;
+ unsigned long baudrate;
+ unsigned long have_console; /* serial_init() was called */
+ unsigned long ram_size; /* RAM size */
+ unsigned long reloc_off; /* Relocation Offset */
+ unsigned long env_addr; /* Address of Environment struct */
+ unsigned long env_valid; /* Checksum of Environment valid? */
+ void **jt; /* jump table */
+};
+
+#endif /* _U_BOOT_H_ */
diff --git a/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/adm8668.h b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/adm8668.h
new file mode 100644
index 0000000..8a16863
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/adm8668.h
@@ -0,0 +1,69 @@
+/************************************************************************
+ *
+ * Copyright (c) 2005
+ * Infineon Technologies AG
+ * St. Martin Strasse 53; 81669 Muenchen; Germany
+ *
+ ************************************************************************/
+
+#ifndef __ADM8668_H__
+#define __ADM8668_H__
+
+/*======================= Physical Memory Map ============================*/
+#define ADM8668_SDRAM_BASE 0
+#define ADM8668_SMEM1_BASE 0x10000000
+#define ADM8668_MPMC_BASE 0x11000000
+#define ADM8668_USB_BASE 0x11200000
+#define ADM8668_CONFIG_BASE 0x11400000
+#define ADM8668_WAN_BASE 0x11600000
+#define ADM8668_WLAN_BASE 0x11800000
+#define ADM8668_LAN_BASE 0x11A00000
+#define ADM8668_INTC_BASE 0x1E000000
+#define ADM8668_TMR_BASE 0x1E200000
+#define ADM8668_UART0_BASE 0x1E400000
+#define ADM8668_SMEM0_BASE 0x1FC00000
+#define ADM8668_NAND_BASE 0x1FFFFF00
+
+#define ADM8668_PCICFG_BASE 0x12200000
+#define ADM8668_PCIDAT_BASE 0x12400000
+
+/* interrupt levels */
+#define ADM8668_SWI_IRQ 1
+#define ADM8668_COMMS_RX_IRQ 2
+#define ADM8668_COMMS_TX_IRQ 3
+#define ADM8668_TIMER0_IRQ 4
+#define ADM8668_TIMER1_IRQ 5
+#define ADM8668_UART0_IRQ 6
+#define ADM8668_LAN_IRQ 7
+#define ADM8668_WAN_IRQ 8
+#define ADM8668_WLAN_IRQ 9
+#define ADM8668_GPIO_IRQ 10
+#define ADM8668_IDE_IRQ 11
+#define ADM8668_PCI2_IRQ 12
+#define ADM8668_PCI1_IRQ 13
+#define ADM8668_PCI0_IRQ 14
+#define ADM8668_USB_IRQ 15
+#define ADM8668_IRQ_MAX ADM8668_USB_IRQ
+
+/* register access macros */
+#define ADM8668_CONFIG_REG(_reg) \
+ (*((volatile unsigned int *)(KSEG1ADDR(ADM8668_CONFIG_BASE + (_reg)))))
+
+/* lan registers */
+#define NETCSR6 0x30
+#define NETCSR7 0x38
+#define NETCSR37 0xF8
+
+/* known/used CPU configuration registers */
+#define ADM8668_CR0 0x00
+#define ADM8668_CR1 0x04
+#define ADM8668_CR3 0x0C
+#define ADM8668_CR66 0x108
+
+/** For GPIO control **/
+#define GPIO_REG 0x5C /* on WLAN */
+#define CRGPIO_REG 0x20 /* on CPU */
+
+void adm8668_init_clocks(void);
+
+#endif /* __ADM8668_H__ */
diff --git a/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/asm/sizes.h b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/asm/sizes.h
new file mode 100644
index 0000000..503843d
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/asm/sizes.h
@@ -0,0 +1,56 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/* DO NOT EDIT!! - this file automatically generated
+ * from .s file by awk -f s2h.awk
+ */
+/* Size definitions
+ * Copyright (C) ARM Limited 1998. All rights reserved.
+ */
+
+#ifndef __sizes_h
+#define __sizes_h 1
+
+/* handy sizes */
+#define SZ_16 0x00000010
+#define SZ_256 0x00000100
+#define SZ_512 0x00000200
+
+#define SZ_1K 0x00000400
+#define SZ_4K 0x00001000
+#define SZ_8K 0x00002000
+#define SZ_16K 0x00004000
+#define SZ_64K 0x00010000
+#define SZ_128K 0x00020000
+#define SZ_256K 0x00040000
+#define SZ_512K 0x00080000
+
+#define SZ_1M 0x00100000
+#define SZ_2M 0x00200000
+#define SZ_4M 0x00400000
+#define SZ_8M 0x00800000
+#define SZ_16M 0x01000000
+#define SZ_32M 0x02000000
+#define SZ_64M 0x04000000
+#define SZ_128M 0x08000000
+#define SZ_256M 0x10000000
+#define SZ_512M 0x20000000
+
+#define SZ_1G 0x40000000
+#define SZ_2G 0x80000000
+
+#endif
+
+/* END */
diff --git a/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/gpio.h b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/gpio.h
new file mode 100644
index 0000000..b0473fc
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/gpio.h
@@ -0,0 +1,13 @@
+#ifndef __ADM8668_GPIO_H__
+#define __ADM8668_GPIO_H__
+
+#define gpio_to_irq(gpio) -1
+
+#define gpio_get_value __gpio_get_value
+#define gpio_set_value __gpio_set_value
+
+#define gpio_cansleep __gpio_cansleep
+
+#include <asm-generic/gpio.h>
+
+#endif
diff --git a/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/irq.h b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/irq.h
new file mode 100644
index 0000000..ea859f0
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/irq.h
@@ -0,0 +1,14 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 by Ralf Baechle
+ */
+#ifndef __ASM_MACH_ADM8668_IRQ_H
+#define __ASM_MACH_ADM8668_IRQ_H
+
+#define NR_IRQS 32
+#define MIPS_CPU_IRQ_BASE 16
+
+#endif /* __ASM_MACH_ADM8668_IRQ_H */
diff --git a/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/war.h b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/war.h
new file mode 100644
index 0000000..7180043
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/include/asm/mach-adm8668/war.h
@@ -0,0 +1,25 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org>
+ */
+#ifndef __ASM_MIPS_MACH_ADM8668_WAR_H
+#define __ASM_MIPS_MACH_ADM8668_WAR_H
+
+#define R4600_V1_INDEX_ICACHEOP_WAR 0
+#define R4600_V1_HIT_CACHEOP_WAR 0
+#define R4600_V2_HIT_CACHEOP_WAR 0
+#define R5432_CP0_INTERRUPT_WAR 0
+#define BCM1250_M3_WAR 0
+#define SIBYTE_1956_WAR 0
+#define MIPS4K_ICACHE_REFILL_WAR 0
+#define MIPS_CACHE_SYNC_WAR 0
+#define TX49XX_ICACHE_INDEX_INV_WAR 0
+#define RM9000_CDEX_SMP_WAR 0
+#define ICACHE_REFILLS_WORKAROUND_WAR 0
+#define R10000_LLSC_WAR 0
+#define MIPS34K_MISSED_ITLB_WAR 0
+
+#endif /* __ASM_MIPS_MACH_ADM8668_WAR_H */
diff --git a/target/linux/adm8668/files-3.18/arch/mips/pci/pci-adm8668.c b/target/linux/adm8668/files-3.18/arch/mips/pci/pci-adm8668.c
new file mode 100644
index 0000000..5cfa546
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/arch/mips/pci/pci-adm8668.c
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Note that this controller is identical to the ADM5120 one
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+
+#include <asm/byteorder.h>
+#include <asm/pci.h>
+#include <adm8668.h>
+
+static DEFINE_SPINLOCK(pci_lock);
+
+#define PCI_ENABLE 0x80000000
+#define ADMPCI_IO_BASE 0x12600000
+#define ADMPCI_IO_SIZE 0x1fffff
+#define ADMPCI_MEM_BASE 0x16000000
+#define ADMPCI_MEM_SIZE 0x7ffffff
+
+static inline void write_cfgaddr(u32 addr)
+{
+ __raw_writel((addr | PCI_ENABLE),
+ (void __iomem *)KSEG1ADDR(ADM8668_PCICFG_BASE));
+}
+
+static inline void write_cfgdata(u32 data)
+{
+ __raw_writel(data, (void __iomem *)KSEG1ADDR(ADM8668_PCIDAT_BASE));
+}
+
+static inline u32 read_cfgdata(void)
+{
+ return __raw_readl((void __iomem *)KSEG1ADDR(ADM8668_PCIDAT_BASE));
+}
+
+static inline u32 mkaddr(struct pci_bus *bus, unsigned int devfn, int where)
+{
+ return ((bus->number & 0xff) << 16) | ((devfn & 0xff) << 8) |
+ (where & 0xfc);
+}
+
+static int pci_read_config(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 *val)
+{
+ unsigned long flags;
+ u32 data;
+
+ spin_lock_irqsave(&pci_lock, flags);
+ write_cfgaddr(mkaddr(bus, devfn, where));
+ data = read_cfgdata();
+
+ switch (size) {
+ case 1:
+ if (where & 1)
+ data >>= 8;
+ if (where & 2)
+ data >>= 16;
+ data &= 0xff;
+ break;
+ case 2:
+ if (where & 2)
+ data >>= 16;
+ data &= 0xffff;
+ break;
+ }
+
+ *val = data;
+
+ spin_unlock_irqrestore(&pci_lock, flags);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int pci_write_config(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 val)
+{
+ unsigned long flags;
+ u32 data;
+ int s;
+
+ spin_lock_irqsave(&pci_lock, flags);
+
+ write_cfgaddr(mkaddr(bus, devfn, where));
+ data = read_cfgdata();
+
+ switch (size) {
+ case 1:
+ s = ((where & 3) << 3);
+ data &= ~(0xff << s);
+ data |= ((val & 0xff) << s);
+ break;
+ case 2:
+ s = ((where & 2) << 4);
+ data &= ~(0xffff << s);
+ data |= ((val & 0xffff) << s);
+ break;
+ case 4:
+ data = val;
+ break;
+ }
+
+ write_cfgdata(data);
+
+ spin_unlock_irqrestore(&pci_lock, flags);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops adm8668_pci_ops = {
+ .read = pci_read_config,
+ .write = pci_write_config
+};
+
+
+struct resource pciioport_resource = {
+ .name = "adm8668_pci",
+ .start = ADMPCI_IO_BASE,
+ .end = ADMPCI_IO_BASE + ADMPCI_IO_SIZE,
+ .flags = IORESOURCE_IO
+};
+
+struct resource pciiomem_resource = {
+ .name = "adm8668_pci",
+ .start = ADMPCI_MEM_BASE,
+ .end = ADMPCI_MEM_BASE + ADMPCI_MEM_SIZE,
+ .flags = IORESOURCE_MEM
+};
+
+struct pci_controller adm8668_pci_controller = {
+ .pci_ops = &adm8668_pci_ops,
+ .io_resource = &pciioport_resource,
+ .mem_resource = &pciiomem_resource,
+};
+
+int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ switch (slot) {
+ case 1:
+ return 14;
+ case 2:
+ return 13;
+ case 3:
+ return 12;
+ default:
+ return dev->irq;
+ }
+}
+
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return 0;
+}
+
+static void adm8668_pci_fixup(struct pci_dev *dev)
+{
+ if (dev->devfn != 0)
+ return;
+
+ pr_info("PCI: fixing up ADM8668 controller\n");
+
+ /* setup COMMAND register */
+ pci_write_config_word(dev, PCI_COMMAND,
+ (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
+
+ /* setup CACHE_LINE_SIZE register */
+ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
+
+ /* setup BARS */
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0);
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
+}
+DECLARE_PCI_FIXUP_HEADER(0x1317, 0x8688, adm8668_pci_fixup);
+
+static int __init adm8668_pci_init(void)
+{
+ void __iomem *io_map_base;
+
+ ioport_resource.start = ADMPCI_IO_BASE;
+ ioport_resource.end = ADMPCI_IO_BASE + ADMPCI_IO_SIZE;
+
+ io_map_base = ioremap(ADMPCI_IO_BASE, ADMPCI_IO_SIZE);
+ if (!io_map_base)
+ printk("io_map_base didn't work.\n");
+
+ adm8668_pci_controller.io_map_base = (unsigned long)io_map_base;
+ register_pci_controller(&adm8668_pci_controller);
+
+ return 0;
+}
+arch_initcall(adm8668_pci_init);
diff --git a/target/linux/adm8668/files-3.18/drivers/mtd/maps/adm8668.c b/target/linux/adm8668/files-3.18/drivers/mtd/maps/adm8668.c
new file mode 100644
index 0000000..8737159
--- /dev/null
+++ b/target/linux/adm8668/files-3.18/drivers/mtd/maps/adm8668.c
@@ -0,0 +1,334 @@
+/*
+ * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
+ *
+ * original functions for finding root filesystem from Mike Baker
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * Copyright 2004, Broadcom Corporation
+ * All Rights Reserved.
+ *
+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
+ *
+ * Flash mapping for adm8668 boards
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/slab.h>
+#include <linux/mtd/partitions.h>
+#include <linux/crc32.h>
+#include <linux/magic.h>
+#include <asm/io.h>
+
+#define WINDOW_ADDR 0x10000000
+#define WINDOW_SIZE 0x800000
+#define BANKWIDTH 2
+
+/* first a little bit about the headers i need.. */
+
+/* just interested in part of the full struct */
+struct squashfs_super_block {
+ __le32 s_magic;
+ __le32 pad0[9]; /* it's not really padding */
+ __le64 bytes_used;
+};
+
+#define IH_MAGIC 0x56190527 /* Image Magic Number */
+struct uboot_header {
+ uint32_t ih_magic; /* Image Header Magic Number */
+ uint32_t ih_hcrc; /* Image Header CRC Checksum */
+ uint32_t ih_time; /* Image Creation Timestamp */
+ uint32_t ih_size; /* Image Data Size */
+ uint32_t ih_load; /* Data Load Address */
+ uint32_t ih_ep; /* Entry Point Address */
+ uint32_t ih_dcrc; /* Image Data CRC Checksum */
+ uint8_t ih_os; /* Operating System */
+ uint8_t ih_arch; /* CPU architecture */
+ uint8_t ih_type; /* Image Type */
+ uint8_t ih_comp; /* Compression Type */
+ char ih_name[32]; /* image name */
+};
+
+/************************************************/
+
+static struct mtd_info *adm8668_mtd;
+
+struct map_info adm8668_map = {
+ name: "adm8668-nor",
+ size: WINDOW_SIZE,
+ phys: WINDOW_ADDR,
+ bankwidth: BANKWIDTH,
+};
+
+/*
+ * Copied from mtdblock.c
+ *
+ * Cache stuff...
+ *
+ * Since typical flash erasable sectors are much larger than what Linux's
+ * buffer cache can handle, we must implement read-modify-write on flash
+ * sectors for each block write requests. To avoid over-erasing flash sectors
+ * and to speed things up, we locally cache a whole flash sector while it is
+ * being written to until a different sector is required.
+ */
+
+static void erase_callback(struct erase_info *done)
+{
+ wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
+ wake_up(wait_q);
+}
+
+static int erase_write (struct mtd_info *mtd, unsigned long pos,
+ int len, const char *buf)
+{
+ struct erase_info erase;
+ DECLARE_WAITQUEUE(wait, current);
+ wait_queue_head_t wait_q;
+ size_t retlen;
+ int ret;
+
+ /*
+ * First, let's erase the flash block.
+ */
+
+ init_waitqueue_head(&wait_q);
+ erase.mtd = mtd;
+ erase.callback = erase_callback;
+ erase.addr = pos;
+ erase.len = len;
+ erase.priv = (u_long)&wait_q;
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue(&wait_q, &wait);
+
+ ret = mtd->_erase(mtd, &erase);
+ if (ret) {
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&wait_q, &wait);
+ printk (KERN_WARNING "erase of region [0x%lx, 0x%x] "
+ "on \"%s\" failed\n",
+ pos, len, mtd->name);
+ return ret;
+ }
+
+ schedule(); /* Wait for erase to finish. */
+ remove_wait_queue(&wait_q, &wait);
+
+ /*
+ * Next, write data to flash.
+ */
+
+ ret = mtd->_write (mtd, pos, len, &retlen, buf);
+ if (ret)
+ return ret;
+ if (retlen != len)
+ return -EIO;
+ return 0;
+}
+
+/* decent defaults in case... shrug */
+static struct mtd_partition adm8668_parts[] = {
+ { name: "linux", offset: 0x40000, size: WINDOW_SIZE-0x40000, },
+ { name: "rootfs", offset: 0xe0000, size: 0x140000, },
+ { name: "uboot_env", offset: 0x20000, size: 0x20000, },
+ { name: NULL, },
+};
+
+/* in case i wanna change stuff later, and to clarify the math section... */
+#define PART_LINUX 0
+#define PART_ROOTFS 1
+#define NR_PARTS 3
+
+static int __init
+init_mtd_partitions(struct mtd_info *mtd, size_t size)
+{
+ struct uboot_header uhdr;
+ int off, blocksize;
+ size_t len, linux_len;
+ struct squashfs_super_block shdr;
+
+ blocksize = mtd->erasesize;
+ if (blocksize < 0x10000)
+ blocksize = 0x10000;
+
+ /* now find squashfs */
+ memset(&shdr, 0xe5, sizeof(shdr));
+ for (off = adm8668_parts[PART_LINUX].offset; off < size; off += blocksize) {
+ /*
+ * Read into buffer
+ */
+ if (mtd->_read(mtd, off, sizeof(shdr), &len, (char *)&shdr) ||
+ len != sizeof(shdr))
+ continue;
+
+ if (shdr.s_magic == SQUASHFS_MAGIC) {
+ uint32_t fs_size = (uint32_t)shdr.bytes_used;
+
+ printk(KERN_INFO "%s: Filesystem type: squashfs, size=%dkB\n",
+ mtd->name, fs_size>>10);
+
+ /* Update rootfs based on the superblock info, and
+ * stretch to end of MTD. rootfs_split will split it */
+ adm8668_parts[PART_ROOTFS].offset = off;
+ adm8668_parts[PART_ROOTFS].size = mtd->size -
+ adm8668_parts[PART_ROOTFS].offset;
+
+ /* kernel ends where rootfs starts
+ * but we'll keep it full-length for upgrades */
+ linux_len = adm8668_parts[PART_LINUX+1].offset -
+ adm8668_parts[PART_LINUX].offset;
+#if 1
+ adm8668_parts[PART_LINUX].size = mtd->size -
+ adm8668_parts[PART_LINUX].offset;
+#else
+ adm8668_parts[PART_LINUX].size = linux_len;
+#endif
+ goto found;
+ }
+ }
+
+ printk(KERN_NOTICE
+ "%s: Couldn't find root filesystem\n",
+ mtd->name);
+ return NR_PARTS;
+
+ found:
+ if (mtd->_read(mtd, adm8668_parts[PART_LINUX].offset, sizeof(uhdr), &len, (char *)&uhdr) ||
+ len != sizeof(uhdr))
+ return NR_PARTS;
+
+ /* that's odd. how'd ya boot it then */
+ if (uhdr.ih_magic != IH_MAGIC)
+ return NR_PARTS;
+
+ if (be32_to_cpu(uhdr.ih_size) != (linux_len - sizeof(uhdr))) {
+ unsigned char *block, *data;
+ unsigned int offset;
+
+ offset = adm8668_parts[PART_LINUX].offset +
+ sizeof(struct uboot_header);
+ data = (unsigned char *)(WINDOW_ADDR | 0xA0000000 | offset);
+
+ printk(KERN_NOTICE "Updating U-boot image:\n");
+ printk(KERN_NOTICE " old: [size: %8d crc32: 0x%08x]\n",
+ be32_to_cpu(uhdr.ih_size), be32_to_cpu(uhdr.ih_dcrc));
+
+ /* Update the data length & crc32 */
+ uhdr.ih_size = cpu_to_be32(linux_len - sizeof(uhdr));
+ uhdr.ih_dcrc = crc32_le(~0, data, linux_len - sizeof(uhdr)) ^ (~0);
+ uhdr.ih_dcrc = cpu_to_be32(uhdr.ih_dcrc);
+
+ printk(KERN_NOTICE " new: [size: %8d crc32: 0x%08x]\n",
+ be32_to_cpu(uhdr.ih_size), be32_to_cpu(uhdr.ih_dcrc));
+
+ /* update header's crc... */
+ uhdr.ih_hcrc = 0;
+ uhdr.ih_hcrc = crc32_le(~0, (unsigned char *)&uhdr,
+ sizeof(uhdr)) ^ (~0);
+ uhdr.ih_hcrc = cpu_to_be32(uhdr.ih_hcrc);
+
+ /* read first eraseblock from the image */
+ block = kmalloc(mtd->erasesize, GFP_KERNEL);
+ if (mtd->_read(mtd, adm8668_parts[PART_LINUX].offset, mtd->erasesize, &len, block) || len != mtd->erasesize) {
+ printk("Error copying first eraseblock\n");
+ return 0;
+ }
+
+ /* Write updated header to the flash */
+ memcpy(block, &uhdr, sizeof(uhdr));
+ if (mtd->_unlock)
+ mtd->_unlock(mtd, off, mtd->erasesize);
+ erase_write(mtd, adm8668_parts[PART_LINUX].offset, mtd->erasesize, block);
+ if (mtd->_sync)
+ mtd->_sync(mtd);
+ kfree(block);
+ printk(KERN_NOTICE "Done\n");
+ }
+
+ return NR_PARTS;
+}
+
+int __init init_adm8668_map(void)
+{
+ int nr_parts, ret;
+
+ adm8668_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+
+ if (!adm8668_map.virt) {
+ printk(KERN_ERR "Failed to ioremap\n");
+ return -EIO;
+ }
+
+ simple_map_init(&adm8668_map);
+ if (!(adm8668_mtd = do_map_probe("cfi_probe", &adm8668_map))) {
+ printk(KERN_ERR "cfi_probe failed\n");
+ iounmap((void *)adm8668_map.virt);
+ return -ENXIO;
+ }
+
+ adm8668_mtd->owner = THIS_MODULE;
+
+ nr_parts = init_mtd_partitions(adm8668_mtd, adm8668_mtd->size);
+ ret = mtd_device_register(adm8668_mtd, adm8668_parts, nr_parts);
+ if (ret) {
+ printk(KERN_ERR "Flash: mtd_device_register failed\n");
+ goto fail;
+ }
+
+ return 0;
+
+ fail:
+ if (adm8668_mtd)
+ map_destroy(adm8668_mtd);
+ if (adm8668_map.virt)
+ iounmap((void *) adm8668_map.virt);
+ adm8668_map.virt = 0;
+ return ret;
+}
+
+void __exit cleanup_adm8668_map(void)
+{
+ mtd_device_unregister(adm8668_mtd);
+ map_destroy(adm8668_mtd);
+ iounmap((void *) adm8668_map.virt);
+ adm8668_map.virt = 0;
+}
+
+module_init(init_adm8668_map);
+module_exit(cleanup_adm8668_map);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>");
+MODULE_DESCRIPTION("MTD map driver for ADM8668 NOR Flash");