--- /dev/null
+prima2 "cb" evalutation board
+Required root node properties:
+ - compatible = "sirf,prima2-cb", "sirf,prima2";
select HAVE_PWM
help
Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
+
+config ARCH_PRIMA2
+ bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
+ select CPU_V7
+ select GENERIC_TIME
+ select NO_IOPORT
+ select GENERIC_CLOCKEVENTS
+ select CLKDEV_LOOKUP
+ select GENERIC_IRQ_CHIP
+ select USE_OF
+ select ZONE_DMA
+ help
+ Support for CSR SiRFSoC ARM Cortex A9 Platform
+
endchoice
#
machine-$(CONFIG_ARCH_OMAP4) := omap2
machine-$(CONFIG_ARCH_ORION5X) := orion5x
machine-$(CONFIG_ARCH_PNX4008) := pnx4008
+machine-$(CONFIG_ARCH_PRIMA2) := prima2
machine-$(CONFIG_ARCH_PXA) := pxa
machine-$(CONFIG_ARCH_REALVIEW) := realview
machine-$(CONFIG_ARCH_RPC) := rpc
--- /dev/null
+/dts-v1/;
+/ {
+ model = "SiRF Prima2 eVB";
+ compatible = "sirf,prima2-cb", "sirf,prima2";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ interrupt-parent = <&intc>;
+
+ memory {
+ reg = <0x00000000 0x20000000>;
+ };
+
+ chosen {
+ bootargs = "mem=512M real_root=/dev/mmcblk0p2 console=ttyS0 panel=1 bootsplash=true bpp=16 androidboot.console=ttyS1";
+ linux,stdout-path = &uart1;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ reg = <0x0>;
+ d-cache-line-size = <32>;
+ i-cache-line-size = <32>;
+ d-cache-size = <32768>;
+ i-cache-size = <32768>;
+ /* from bootloader */
+ timebase-frequency = <0>;
+ bus-frequency = <0>;
+ clock-frequency = <0>;
+ };
+ };
+
+ axi {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x40000000 0x40000000 0x80000000>;
+
+ l2-cache-controller@80040000 {
+ compatible = "arm,pl310-cache";
+ reg = <0x80040000 0x1000>;
+ interrupts = <59>;
+ };
+
+ intc: interrupt-controller@80020000 {
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ compatible = "sirf,prima2-intc";
+ reg = <0x80020000 0x1000>;
+ };
+
+ sys-iobg {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x88000000 0x88000000 0x40000>;
+
+ clock-controller@88000000 {
+ compatible = "sirf,prima2-clkc";
+ reg = <0x88000000 0x1000>;
+ interrupts = <3>;
+ };
+
+ reset-controller@88010000 {
+ compatible = "sirf,prima2-rstc";
+ reg = <0x88010000 0x1000>;
+ };
+ };
+
+ mem-iobg {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x90000000 0x90000000 0x10000>;
+
+ memory-controller@90000000 {
+ compatible = "sirf,prima2-memc";
+ reg = <0x90000000 0x10000>;
+ interrupts = <27>;
+ };
+ };
+
+ disp-iobg {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x90010000 0x90010000 0x30000>;
+
+ display@90010000 {
+ compatible = "sirf,prima2-lcd";
+ reg = <0x90010000 0x20000>;
+ interrupts = <30>;
+ };
+
+ vpp@90020000 {
+ compatible = "sirf,prima2-vpp";
+ reg = <0x90020000 0x10000>;
+ interrupts = <31>;
+ };
+ };
+
+ graphics-iobg {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x98000000 0x98000000 0x8000000>;
+
+ graphics@98000000 {
+ compatible = "powervr,sgx531";
+ reg = <0x98000000 0x8000000>;
+ interrupts = <6>;
+ };
+ };
+
+ multimedia-iobg {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0xa0000000 0xa0000000 0x8000000>;
+
+ multimedia@a0000000 {
+ compatible = "sirf,prima2-video-codec";
+ reg = <0xa0000000 0x8000000>;
+ interrupts = <5>;
+ };
+ };
+
+ dsp-iobg {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0xa8000000 0xa8000000 0x2000000>;
+
+ dspif@a8000000 {
+ compatible = "sirf,prima2-dspif";
+ reg = <0xa8000000 0x10000>;
+ interrupts = <9>;
+ };
+
+ gps@a8010000 {
+ compatible = "sirf,prima2-gps";
+ reg = <0xa8010000 0x10000>;
+ interrupts = <7>;
+ };
+
+ dsp@a9000000 {
+ compatible = "sirf,prima2-dsp";
+ reg = <0xa9000000 0x1000000>;
+ interrupts = <8>;
+ };
+ };
+
+ peri-iobg {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0xb0000000 0xb0000000 0x180000>;
+
+ timer@b0020000 {
+ compatible = "sirf,prima2-tick";
+ reg = <0xb0020000 0x1000>;
+ interrupts = <0>;
+ };
+
+ nand@b0030000 {
+ compatible = "sirf,prima2-nand";
+ reg = <0xb0030000 0x10000>;
+ interrupts = <41>;
+ };
+
+ audio@b0040000 {
+ compatible = "sirf,prima2-audio";
+ reg = <0xb0040000 0x10000>;
+ interrupts = <35>;
+ };
+
+ uart0: uart@b0050000 {
+ cell-index = <0>;
+ compatible = "sirf,prima2-uart";
+ reg = <0xb0050000 0x10000>;
+ interrupts = <17>;
+ };
+
+ uart1: uart@b0060000 {
+ cell-index = <1>;
+ compatible = "sirf,prima2-uart";
+ reg = <0xb0060000 0x10000>;
+ interrupts = <18>;
+ };
+
+ uart2: uart@b0070000 {
+ cell-index = <2>;
+ compatible = "sirf,prima2-uart";
+ reg = <0xb0070000 0x10000>;
+ interrupts = <19>;
+ };
+
+ usp0: usp@b0080000 {
+ cell-index = <0>;
+ compatible = "sirf,prima2-usp";
+ reg = <0xb0080000 0x10000>;
+ interrupts = <20>;
+ };
+
+ usp1: usp@b0090000 {
+ cell-index = <1>;
+ compatible = "sirf,prima2-usp";
+ reg = <0xb0090000 0x10000>;
+ interrupts = <21>;
+ };
+
+ usp2: usp@b00a0000 {
+ cell-index = <2>;
+ compatible = "sirf,prima2-usp";
+ reg = <0xb00a0000 0x10000>;
+ interrupts = <22>;
+ };
+
+ dmac0: dma-controller@b00b0000 {
+ cell-index = <0>;
+ compatible = "sirf,prima2-dmac";
+ reg = <0xb00b0000 0x10000>;
+ interrupts = <12>;
+ };
+
+ dmac1: dma-controller@b0160000 {
+ cell-index = <1>;
+ compatible = "sirf,prima2-dmac";
+ reg = <0xb0160000 0x10000>;
+ interrupts = <13>;
+ };
+
+ vip@b00C0000 {
+ compatible = "sirf,prima2-vip";
+ reg = <0xb00C0000 0x10000>;
+ };
+
+ spi0: spi@b00d0000 {
+ cell-index = <0>;
+ compatible = "sirf,prima2-spi";
+ reg = <0xb00d0000 0x10000>;
+ interrupts = <15>;
+ };
+
+ spi1: spi@b0170000 {
+ cell-index = <1>;
+ compatible = "sirf,prima2-spi";
+ reg = <0xb0170000 0x10000>;
+ interrupts = <16>;
+ };
+
+ i2c0: i2c@b00e0000 {
+ cell-index = <0>;
+ compatible = "sirf,prima2-i2c";
+ reg = <0xb00e0000 0x10000>;
+ interrupts = <24>;
+ };
+
+ i2c1: i2c@b00f0000 {
+ cell-index = <1>;
+ compatible = "sirf,prima2-i2c";
+ reg = <0xb00f0000 0x10000>;
+ interrupts = <25>;
+ };
+
+ tsc@b0110000 {
+ compatible = "sirf,prima2-tsc";
+ reg = <0xb0110000 0x10000>;
+ interrupts = <33>;
+ };
+
+ gpio: gpio-controller@b0120000 {
+ #gpio-cells = <2>;
+ #interrupt-cells = <2>;
+ compatible = "sirf,prima2-gpio";
+ reg = <0xb0120000 0x10000>;
+ gpio-controller;
+ interrupt-controller;
+ };
+
+ pwm@b0130000 {
+ compatible = "sirf,prima2-pwm";
+ reg = <0xb0130000 0x10000>;
+ };
+
+ efusesys@b0140000 {
+ compatible = "sirf,prima2-efuse";
+ reg = <0xb0140000 0x10000>;
+ };
+
+ pulsec@b0150000 {
+ compatible = "sirf,prima2-pulsec";
+ reg = <0xb0150000 0x10000>;
+ interrupts = <48>;
+ };
+
+ pci-iobg {
+ compatible = "sirf,prima2-pciiobg", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x56000000 0x56000000 0x1b00000>;
+
+ sd0: sdhci@56000000 {
+ cell-index = <0>;
+ compatible = "sirf,prima2-sdhc";
+ reg = <0x56000000 0x100000>;
+ interrupts = <38>;
+ };
+
+ sd1: sdhci@56100000 {
+ cell-index = <1>;
+ compatible = "sirf,prima2-sdhc";
+ reg = <0x56100000 0x100000>;
+ interrupts = <38>;
+ };
+
+ sd2: sdhci@56200000 {
+ cell-index = <2>;
+ compatible = "sirf,prima2-sdhc";
+ reg = <0x56200000 0x100000>;
+ interrupts = <23>;
+ };
+
+ sd3: sdhci@56300000 {
+ cell-index = <3>;
+ compatible = "sirf,prima2-sdhc";
+ reg = <0x56300000 0x100000>;
+ interrupts = <23>;
+ };
+
+ sd4: sdhci@56400000 {
+ cell-index = <4>;
+ compatible = "sirf,prima2-sdhc";
+ reg = <0x56400000 0x100000>;
+ interrupts = <39>;
+ };
+
+ sd5: sdhci@56500000 {
+ cell-index = <5>;
+ compatible = "sirf,prima2-sdhc";
+ reg = <0x56500000 0x100000>;
+ interrupts = <39>;
+ };
+
+ pci-copy@57900000 {
+ compatible = "sirf,prima2-pcicp";
+ reg = <0x57900000 0x100000>;
+ interrupts = <40>;
+ };
+
+ rom-interface@57a00000 {
+ compatible = "sirf,prima2-romif";
+ reg = <0x57a00000 0x100000>;
+ };
+ };
+ };
+
+ rtc-iobg {
+ compatible = "sirf,prima2-rtciobg", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x80030000 0x10000>;
+
+ gpsrtc@1000 {
+ compatible = "sirf,prima2-gpsrtc";
+ reg = <0x1000 0x1000>;
+ interrupts = <55 56 57>;
+ };
+
+ sysrtc@2000 {
+ compatible = "sirf,prima2-sysrtc";
+ reg = <0x2000 0x1000>;
+ interrupts = <52 53 54>;
+ };
+
+ pwrc@3000 {
+ compatible = "sirf,prima2-pwrc";
+ reg = <0x3000 0x1000>;
+ interrupts = <32>;
+ };
+ };
+
+ uus-iobg {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0xb8000000 0xb8000000 0x40000>;
+
+ usb0: usb@b00e0000 {
+ compatible = "chipidea,ci13611a-prima2";
+ reg = <0xb8000000 0x10000>;
+ interrupts = <10>;
+ };
+
+ usb1: usb@b00f0000 {
+ compatible = "chipidea,ci13611a-prima2";
+ reg = <0xb8010000 0x10000>;
+ interrupts = <11>;
+ };
+
+ sata@b00f0000 {
+ compatible = "synopsys,dwc-ahsata";
+ reg = <0xb8020000 0x10000>;
+ interrupts = <37>;
+ };
+
+ security@b00f0000 {
+ compatible = "sirf,prima2-security";
+ reg = <0xb8030000 0x10000>;
+ interrupts = <42>;
+ };
+ };
+ };
+};
--- /dev/null
+obj-y := timer.o
+obj-y += irq.o
+obj-y += clock.o
+obj-y += rstc.o
+obj-y += prima2.o
--- /dev/null
+zreladdr-y := 0x00008000
+params_phys-y := 0x00000100
+initrd_phys-y := 0x00800000
--- /dev/null
+/*
+ * Clock tree for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/clkdev.h>
+#include <linux/clk.h>
+#include <linux/spinlock.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <asm/mach/map.h>
+#include <mach/map.h>
+
+#define SIRFSOC_CLKC_CLK_EN0 0x0000
+#define SIRFSOC_CLKC_CLK_EN1 0x0004
+#define SIRFSOC_CLKC_REF_CFG 0x0014
+#define SIRFSOC_CLKC_CPU_CFG 0x0018
+#define SIRFSOC_CLKC_MEM_CFG 0x001c
+#define SIRFSOC_CLKC_SYS_CFG 0x0020
+#define SIRFSOC_CLKC_IO_CFG 0x0024
+#define SIRFSOC_CLKC_DSP_CFG 0x0028
+#define SIRFSOC_CLKC_GFX_CFG 0x002c
+#define SIRFSOC_CLKC_MM_CFG 0x0030
+#define SIRFSOC_LKC_LCD_CFG 0x0034
+#define SIRFSOC_CLKC_MMC_CFG 0x0038
+#define SIRFSOC_CLKC_PLL1_CFG0 0x0040
+#define SIRFSOC_CLKC_PLL2_CFG0 0x0044
+#define SIRFSOC_CLKC_PLL3_CFG0 0x0048
+#define SIRFSOC_CLKC_PLL1_CFG1 0x004c
+#define SIRFSOC_CLKC_PLL2_CFG1 0x0050
+#define SIRFSOC_CLKC_PLL3_CFG1 0x0054
+#define SIRFSOC_CLKC_PLL1_CFG2 0x0058
+#define SIRFSOC_CLKC_PLL2_CFG2 0x005c
+#define SIRFSOC_CLKC_PLL3_CFG2 0x0060
+
+#define SIRFSOC_CLOCK_VA_BASE SIRFSOC_VA(0x005000)
+
+#define KHZ 1000
+#define MHZ (KHZ * KHZ)
+
+struct clk_ops {
+ unsigned long (*get_rate)(struct clk *clk);
+ long (*round_rate)(struct clk *clk, unsigned long rate);
+ int (*set_rate)(struct clk *clk, unsigned long rate);
+ int (*enable)(struct clk *clk);
+ int (*disable)(struct clk *clk);
+ struct clk *(*get_parent)(struct clk *clk);
+ int (*set_parent)(struct clk *clk, struct clk *parent);
+};
+
+struct clk {
+ struct clk *parent; /* parent clk */
+ unsigned long rate; /* clock rate in Hz */
+ signed char usage; /* clock enable count */
+ signed char enable_bit; /* enable bit: 0 ~ 63 */
+ unsigned short regofs; /* register offset */
+ struct clk_ops *ops; /* clock operation */
+};
+
+static DEFINE_SPINLOCK(clocks_lock);
+
+static inline unsigned long clkc_readl(unsigned reg)
+{
+ return readl(SIRFSOC_CLOCK_VA_BASE + reg);
+}
+
+static inline void clkc_writel(u32 val, unsigned reg)
+{
+ writel(val, SIRFSOC_CLOCK_VA_BASE + reg);
+}
+
+/*
+ * osc_rtc - real time oscillator - 32.768KHz
+ * osc_sys - high speed oscillator - 26MHz
+ */
+
+static struct clk clk_rtc = {
+ .rate = 32768,
+};
+
+static struct clk clk_osc = {
+ .rate = 26 * MHZ,
+};
+
+/*
+ * std pll
+ */
+static unsigned long std_pll_get_rate(struct clk *clk)
+{
+ unsigned long fin = clk_get_rate(clk->parent);
+ u32 regcfg2 = clk->regofs + SIRFSOC_CLKC_PLL1_CFG2 -
+ SIRFSOC_CLKC_PLL1_CFG0;
+
+ if (clkc_readl(regcfg2) & BIT(2)) {
+ /* pll bypass mode */
+ clk->rate = fin;
+ } else {
+ /* fout = fin * nf / nr / od */
+ u32 cfg0 = clkc_readl(clk->regofs);
+ u32 nf = (cfg0 & (BIT(13) - 1)) + 1;
+ u32 nr = ((cfg0 >> 13) & (BIT(6) - 1)) + 1;
+ u32 od = ((cfg0 >> 19) & (BIT(4) - 1)) + 1;
+ WARN_ON(fin % MHZ);
+ clk->rate = fin / MHZ * nf / nr / od * MHZ;
+ }
+
+ return clk->rate;
+}
+
+static int std_pll_set_rate(struct clk *clk, unsigned long rate)
+{
+ unsigned long fin, nf, nr, od, reg;
+
+ /*
+ * fout = fin * nf / (nr * od);
+ * set od = 1, nr = fin/MHz, so fout = nf * MHz
+ */
+
+ nf = rate / MHZ;
+ if (unlikely((rate % MHZ) || nf > BIT(13) || nf < 1))
+ return -EINVAL;
+
+ fin = clk_get_rate(clk->parent);
+ BUG_ON(fin < MHZ);
+
+ nr = fin / MHZ;
+ BUG_ON((fin % MHZ) || nr > BIT(6));
+
+ od = 1;
+
+ reg = (nf - 1) | ((nr - 1) << 13) | ((od - 1) << 19);
+ clkc_writel(reg, clk->regofs);
+
+ reg = clk->regofs + SIRFSOC_CLKC_PLL1_CFG1 - SIRFSOC_CLKC_PLL1_CFG0;
+ clkc_writel((nf >> 1) - 1, reg);
+
+ reg = clk->regofs + SIRFSOC_CLKC_PLL1_CFG2 - SIRFSOC_CLKC_PLL1_CFG0;
+ while (!(clkc_readl(reg) & BIT(6)))
+ cpu_relax();
+
+ clk->rate = 0; /* set to zero will force recalculation */
+ return 0;
+}
+
+static struct clk_ops std_pll_ops = {
+ .get_rate = std_pll_get_rate,
+ .set_rate = std_pll_set_rate,
+};
+
+static struct clk clk_pll1 = {
+ .parent = &clk_osc,
+ .regofs = SIRFSOC_CLKC_PLL1_CFG0,
+ .ops = &std_pll_ops,
+};
+
+static struct clk clk_pll2 = {
+ .parent = &clk_osc,
+ .regofs = SIRFSOC_CLKC_PLL2_CFG0,
+ .ops = &std_pll_ops,
+};
+
+static struct clk clk_pll3 = {
+ .parent = &clk_osc,
+ .regofs = SIRFSOC_CLKC_PLL3_CFG0,
+ .ops = &std_pll_ops,
+};
+
+/*
+ * clock domains - cpu, mem, sys/io
+ */
+
+static struct clk clk_mem;
+
+static struct clk *dmn_get_parent(struct clk *clk)
+{
+ struct clk *clks[] = {
+ &clk_osc, &clk_rtc, &clk_pll1, &clk_pll2, &clk_pll3
+ };
+ u32 cfg = clkc_readl(clk->regofs);
+ WARN_ON((cfg & (BIT(3) - 1)) > 4);
+ return clks[cfg & (BIT(3) - 1)];
+}
+
+static int dmn_set_parent(struct clk *clk, struct clk *parent)
+{
+ const struct clk *clks[] = {
+ &clk_osc, &clk_rtc, &clk_pll1, &clk_pll2, &clk_pll3
+ };
+ u32 cfg = clkc_readl(clk->regofs);
+ int i;
+ for (i = 0; i < ARRAY_SIZE(clks); i++) {
+ if (clks[i] == parent) {
+ cfg &= ~(BIT(3) - 1);
+ clkc_writel(cfg | i, clk->regofs);
+ /* BIT(3) - switching status: 1 - busy, 0 - done */
+ while (clkc_readl(clk->regofs) & BIT(3))
+ cpu_relax();
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+static unsigned long dmn_get_rate(struct clk *clk)
+{
+ unsigned long fin = clk_get_rate(clk->parent);
+ u32 cfg = clkc_readl(clk->regofs);
+ if (cfg & BIT(24)) {
+ /* fcd bypass mode */
+ clk->rate = fin;
+ } else {
+ /*
+ * wait count: bit[19:16], hold count: bit[23:20]
+ */
+ u32 wait = (cfg >> 16) & (BIT(4) - 1);
+ u32 hold = (cfg >> 20) & (BIT(4) - 1);
+
+ clk->rate = fin / (wait + hold + 2);
+ }
+
+ return clk->rate;
+}
+
+static int dmn_set_rate(struct clk *clk, unsigned long rate)
+{
+ unsigned long fin;
+ unsigned ratio, wait, hold, reg;
+ unsigned bits = (clk == &clk_mem) ? 3 : 4;
+
+ fin = clk_get_rate(clk->parent);
+ ratio = fin / rate;
+
+ if (unlikely(ratio < 2 || ratio > BIT(bits + 1)))
+ return -EINVAL;
+
+ WARN_ON(fin % rate);
+
+ wait = (ratio >> 1) - 1;
+ hold = ratio - wait - 2;
+
+ reg = clkc_readl(clk->regofs);
+ reg &= ~(((BIT(bits) - 1) << 16) | ((BIT(bits) - 1) << 20));
+ reg |= (wait << 16) | (hold << 20) | BIT(25);
+ clkc_writel(reg, clk->regofs);
+
+ /* waiting FCD been effective */
+ while (clkc_readl(clk->regofs) & BIT(25))
+ cpu_relax();
+
+ clk->rate = 0; /* set to zero will force recalculation */
+
+ return 0;
+}
+
+/*
+ * cpu clock has no FCD register in Prima2, can only change pll
+ */
+static int cpu_set_rate(struct clk *clk, unsigned long rate)
+{
+ int ret1, ret2;
+ struct clk *cur_parent, *tmp_parent;
+
+ cur_parent = dmn_get_parent(clk);
+ BUG_ON(cur_parent == NULL || cur_parent->usage > 1);
+
+ /* switch to tmp pll before setting parent clock's rate */
+ tmp_parent = cur_parent == &clk_pll1 ? &clk_pll2 : &clk_pll1;
+ ret1 = dmn_set_parent(clk, tmp_parent);
+ BUG_ON(ret1);
+
+ ret2 = clk_set_rate(cur_parent, rate);
+
+ ret1 = dmn_set_parent(clk, cur_parent);
+
+ clk->rate = 0; /* set to zero will force recalculation */
+
+ return ret2 ? ret2 : ret1;
+}
+
+static struct clk_ops cpu_ops = {
+ .get_parent = dmn_get_parent,
+ .set_parent = dmn_set_parent,
+ .set_rate = cpu_set_rate,
+};
+
+static struct clk clk_cpu = {
+ .parent = &clk_pll1,
+ .regofs = SIRFSOC_CLKC_CPU_CFG,
+ .ops = &cpu_ops,
+};
+
+
+static struct clk_ops msi_ops = {
+ .set_rate = dmn_set_rate,
+ .get_rate = dmn_get_rate,
+ .set_parent = dmn_set_parent,
+ .get_parent = dmn_get_parent,
+};
+
+static struct clk clk_mem = {
+ .parent = &clk_pll2,
+ .regofs = SIRFSOC_CLKC_MEM_CFG,
+ .ops = &msi_ops,
+};
+
+static struct clk clk_sys = {
+ .parent = &clk_pll3,
+ .regofs = SIRFSOC_CLKC_SYS_CFG,
+ .ops = &msi_ops,
+};
+
+static struct clk clk_io = {
+ .parent = &clk_pll3,
+ .regofs = SIRFSOC_CLKC_IO_CFG,
+ .ops = &msi_ops,
+};
+
+/*
+ * on-chip clock sets
+ */
+static struct clk_lookup onchip_clks[] = {
+ {
+ .dev_id = "rtc",
+ .clk = &clk_rtc,
+ }, {
+ .dev_id = "osc",
+ .clk = &clk_osc,
+ }, {
+ .dev_id = "pll1",
+ .clk = &clk_pll1,
+ }, {
+ .dev_id = "pll2",
+ .clk = &clk_pll2,
+ }, {
+ .dev_id = "pll3",
+ .clk = &clk_pll3,
+ }, {
+ .dev_id = "cpu",
+ .clk = &clk_cpu,
+ }, {
+ .dev_id = "mem",
+ .clk = &clk_mem,
+ }, {
+ .dev_id = "sys",
+ .clk = &clk_sys,
+ }, {
+ .dev_id = "io",
+ .clk = &clk_io,
+ },
+};
+
+int clk_enable(struct clk *clk)
+{
+ unsigned long flags;
+
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return -EINVAL;
+
+ if (clk->parent)
+ clk_enable(clk->parent);
+
+ spin_lock_irqsave(&clocks_lock, flags);
+ if (!clk->usage++ && clk->ops && clk->ops->enable)
+ clk->ops->enable(clk);
+ spin_unlock_irqrestore(&clocks_lock, flags);
+ return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+ unsigned long flags;
+
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return;
+
+ WARN_ON(!clk->usage);
+
+ spin_lock_irqsave(&clocks_lock, flags);
+ if (--clk->usage == 0 && clk->ops && clk->ops->disable)
+ clk->ops->disable(clk);
+ spin_unlock_irqrestore(&clocks_lock, flags);
+
+ if (clk->parent)
+ clk_disable(clk->parent);
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return 0;
+
+ if (clk->rate)
+ return clk->rate;
+
+ if (clk->ops && clk->ops->get_rate)
+ return clk->ops->get_rate(clk);
+
+ return clk_get_rate(clk->parent);
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return 0;
+
+ if (clk->ops && clk->ops->round_rate)
+ return clk->ops->round_rate(clk, rate);
+
+ return 0;
+}
+EXPORT_SYMBOL(clk_round_rate);
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return -EINVAL;
+
+ if (!clk->ops || !clk->ops->set_rate)
+ return -EINVAL;
+
+ return clk->ops->set_rate(clk, rate);
+}
+EXPORT_SYMBOL(clk_set_rate);
+
+int clk_set_parent(struct clk *clk, struct clk *parent)
+{
+ int ret;
+ unsigned long flags;
+
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return -EINVAL;
+
+ if (!clk->ops || !clk->ops->set_parent)
+ return -EINVAL;
+
+ spin_lock_irqsave(&clocks_lock, flags);
+ ret = clk->ops->set_parent(clk, parent);
+ if (!ret) {
+ parent->usage += clk->usage;
+ clk->parent->usage -= clk->usage;
+ BUG_ON(clk->parent->usage < 0);
+ clk->parent = parent;
+ }
+ spin_unlock_irqrestore(&clocks_lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL(clk_set_parent);
+
+struct clk *clk_get_parent(struct clk *clk)
+{
+ unsigned long flags;
+
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return NULL;
+
+ if (!clk->ops || !clk->ops->get_parent)
+ return clk->parent;
+
+ spin_lock_irqsave(&clocks_lock, flags);
+ clk->parent = clk->ops->get_parent(clk);
+ spin_unlock_irqrestore(&clocks_lock, flags);
+ return clk->parent;
+}
+EXPORT_SYMBOL(clk_get_parent);
+
+static void __init sirfsoc_clk_init(void)
+{
+ clkdev_add_table(onchip_clks, ARRAY_SIZE(onchip_clks));
+}
+
+static struct of_device_id clkc_ids[] = {
+ { .compatible = "sirf,prima2-clkc" },
+};
+
+void __init sirfsoc_of_clk_init(void)
+{
+ struct device_node *np;
+ struct resource res;
+ struct map_desc sirfsoc_clkc_iodesc = {
+ .virtual = SIRFSOC_CLOCK_VA_BASE,
+ .type = MT_DEVICE,
+ };
+
+ np = of_find_matching_node(NULL, clkc_ids);
+ if (!np)
+ panic("unable to find compatible clkc node in dtb\n");
+
+ if (of_address_to_resource(np, 0, &res))
+ panic("unable to find clkc range in dtb");
+ of_node_put(np);
+
+ sirfsoc_clkc_iodesc.pfn = __phys_to_pfn(res.start);
+ sirfsoc_clkc_iodesc.length = 1 + res.end - res.start;
+
+ iotable_init(&sirfsoc_clkc_iodesc, 1);
+
+ sirfsoc_clk_init();
+}
--- /dev/null
+/*
+ * This file contains common function prototypes to avoid externs in the c files.
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_PRIMA2_COMMON_H__
+#define __MACH_PRIMA2_COMMON_H__
+
+#include <linux/init.h>
+#include <asm/mach/time.h>
+
+extern struct sys_timer sirfsoc_timer;
+
+extern void __init sirfsoc_of_irq_init(void);
+extern void __init sirfsoc_of_clk_init(void);
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/clkdev.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_CLKDEV_H
+#define __MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/debug-macro.S
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <mach/hardware.h>
+#include <mach/uart.h>
+
+ .macro addruart, rp, rv
+ ldr \rp, =SIRFSOC_UART1_PA_BASE @ physical
+ ldr \rv, =SIRFSOC_UART1_VA_BASE @ virtual
+ .endm
+
+ .macro senduart,rd,rx
+ str \rd, [\rx, #SIRFSOC_UART_TXFIFO_DATA]
+ .endm
+
+ .macro busyuart,rd,rx
+ .endm
+
+ .macro waituart,rd,rx
+1001: ldr \rd, [\rx, #SIRFSOC_UART_TXFIFO_STATUS]
+ tst \rd, #SIRFSOC_UART1_TXFIFO_EMPTY
+ beq 1001b
+ .endm
+
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/entry-macro.S
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <mach/hardware.h>
+
+#define SIRFSOC_INT_ID 0x38
+
+ .macro get_irqnr_preamble, base, tmp
+ ldr \base, =sirfsoc_intc_base
+ ldr \base, [\base]
+ .endm
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ ldr \irqnr, [\base, #SIRFSOC_INT_ID] @ Get the highest priority irq
+ cmp \irqnr, #0x40 @ the irq num can't be larger than 0x3f
+ movges \irqnr, #0
+ .endm
+
+ .macro disable_fiq
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ .endm
+
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/hardware.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_HARDWARE_H__
+#define __MACH_HARDWARE_H__
+
+#include <asm/sizes.h>
+#include <mach/map.h>
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/io.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_PRIMA2_IO_H
+#define __MACH_PRIMA2_IO_H
+
+#define IO_SPACE_LIMIT ((resource_size_t)0)
+
+#define __mem_pci(a) (a)
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/irqs.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __ASM_ARCH_IRQS_H
+#define __ASM_ARCH_IRQS_H
+
+#define SIRFSOC_INTENAL_IRQ_START 0
+#define SIRFSOC_INTENAL_IRQ_END 59
+
+#define NR_IRQS 220
+
+#endif
--- /dev/null
+/*
+ * memory & I/O static mapping definitions for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_PRIMA2_MAP_H__
+#define __MACH_PRIMA2_MAP_H__
+
+#include <mach/vmalloc.h>
+
+#define SIRFSOC_VA(x) (VMALLOC_END + ((x) & 0x00FFF000))
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/memory.h
+ *
+ * Copyright (c) 2010 – 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#define PLAT_PHYS_OFFSET UL(0x00000000)
+
+/*
+ * Restrict DMA-able region to workaround silicon limitation.
+ * The limitation restricts buffers available for DMA to SD/MMC
+ * hardware to be below 256MB
+ */
+#define ARM_DMA_ZONE_SIZE (SZ_256M)
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/system.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_SYSTEM_H__
+#define __MACH_SYSTEM_H__
+
+#include <linux/bitops.h>
+#include <mach/hardware.h>
+
+#define SIRFSOC_SYS_RST_BIT BIT(31)
+
+extern void __iomem *sirfsoc_rstc_base;
+
+static inline void arch_idle(void)
+{
+ cpu_do_idle();
+}
+
+static inline void arch_reset(char mode, const char *cmd)
+{
+ writel(SIRFSOC_SYS_RST_BIT, sirfsoc_rstc_base);
+}
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/timex.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_TIMEX_H__
+#define __MACH_TIMEX_H__
+
+#define CLOCK_TICK_RATE 1000000
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/uart.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_PRIMA2_SIRFSOC_UART_H
+#define __MACH_PRIMA2_SIRFSOC_UART_H
+
+/* UART-1: used as serial debug port */
+#define SIRFSOC_UART1_PA_BASE 0xb0060000
+#define SIRFSOC_UART1_VA_BASE SIRFSOC_VA(0x060000)
+#define SIRFSOC_UART1_SIZE SZ_4K
+
+#define SIRFSOC_UART_TXFIFO_STATUS 0x0114
+#define SIRFSOC_UART_TXFIFO_DATA 0x0118
+
+#define SIRFSOC_UART1_TXFIFO_FULL (1 << 5)
+#define SIRFSOC_UART1_TXFIFO_EMPTY (1 << 6)
+
+#endif
--- /dev/null
+/*
+ * arch/arm/mach-prima2/include/mach/uncompress.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __ASM_ARCH_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+
+#include <linux/io.h>
+#include <mach/hardware.h>
+#include <mach/uart.h>
+
+void arch_decomp_setup(void)
+{
+}
+
+#define arch_decomp_wdog()
+
+static __inline__ void putc(char c)
+{
+ /*
+ * during kernel decompression, all mappings are flat:
+ * virt_addr == phys_addr
+ */
+ while (__raw_readl(SIRFSOC_UART1_PA_BASE + SIRFSOC_UART_TXFIFO_STATUS)
+ & SIRFSOC_UART1_TXFIFO_FULL)
+ barrier();
+
+ __raw_writel(c, SIRFSOC_UART1_PA_BASE + SIRFSOC_UART_TXFIFO_DATA);
+}
+
+static inline void flush(void)
+{
+}
+
+#endif
+
--- /dev/null
+/*
+ * arch/arm/ach-prima2/include/mach/vmalloc.h
+ *
+ * Copyright (c) 2010 – 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef __MACH_VMALLOC_H
+#define __MACH_VMALLOC_H
+
+#include <linux/const.h>
+
+#define VMALLOC_END _AC(0xFEC00000, UL)
+
+#endif
--- /dev/null
+/*
+ * interrupt controller support for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <mach/hardware.h>
+#include <asm/mach/irq.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#define SIRFSOC_INT_RISC_MASK0 0x0018
+#define SIRFSOC_INT_RISC_MASK1 0x001C
+#define SIRFSOC_INT_RISC_LEVEL0 0x0020
+#define SIRFSOC_INT_RISC_LEVEL1 0x0024
+
+void __iomem *sirfsoc_intc_base;
+
+static __init void
+sirfsoc_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
+{
+ struct irq_chip_generic *gc;
+ struct irq_chip_type *ct;
+
+ gc = irq_alloc_generic_chip("SIRFINTC", 1, irq_start, base, handle_level_irq);
+ ct = gc->chip_types;
+
+ ct->chip.irq_mask = irq_gc_mask_clr_bit;
+ ct->chip.irq_unmask = irq_gc_mask_set_bit;
+ ct->regs.mask = SIRFSOC_INT_RISC_MASK0;
+
+ irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE, IRQ_NOREQUEST, 0);
+}
+
+static __init void sirfsoc_irq_init(void)
+{
+ sirfsoc_alloc_gc(sirfsoc_intc_base, 0, 32);
+ sirfsoc_alloc_gc(sirfsoc_intc_base + 4, 32, SIRFSOC_INTENAL_IRQ_END - 32);
+
+ writel_relaxed(0, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL0);
+ writel_relaxed(0, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL1);
+
+ writel_relaxed(0, sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK0);
+ writel_relaxed(0, sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK1);
+}
+
+static struct of_device_id intc_ids[] = {
+ { .compatible = "sirf,prima2-intc" },
+};
+
+void __init sirfsoc_of_irq_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, intc_ids);
+ if (!np)
+ panic("unable to find compatible intc node in dtb\n");
+
+ sirfsoc_intc_base = of_iomap(np, 0);
+ if (!sirfsoc_intc_base)
+ panic("unable to map intc cpu registers\n");
+
+ of_node_put(np);
+
+ sirfsoc_irq_init();
+}
--- /dev/null
+/*
+ * Defines machines for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include "common.h"
+
+static struct of_device_id sirfsoc_of_bus_ids[] __initdata = {
+ { .compatible = "simple-bus", },
+ {},
+};
+
+void __init sirfsoc_mach_init(void)
+{
+ of_platform_bus_probe(NULL, sirfsoc_of_bus_ids, NULL);
+}
+
+static const char *prima2cb_dt_match[] __initdata = {
+ "sirf,prima2-cb",
+ NULL
+};
+
+MACHINE_START(PRIMA2_EVB, "prima2cb")
+ /* Maintainer: Barry Song <baohua.song@csr.com> */
+ .boot_params = 0x00000100,
+ .init_early = sirfsoc_of_clk_init,
+ .init_irq = sirfsoc_of_irq_init,
+ .timer = &sirfsoc_timer,
+ .init_machine = sirfsoc_mach_init,
+ .dt_compat = prima2cb_dt_match,
+MACHINE_END
--- /dev/null
+/*
+ * reset controller for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/kernel.h>
+#include <linux/mutex.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+void __iomem *sirfsoc_rstc_base;
+static DEFINE_MUTEX(rstc_lock);
+
+static struct of_device_id rstc_ids[] = {
+ { .compatible = "sirf,prima2-rstc" },
+};
+
+static int __init sirfsoc_of_rstc_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, rstc_ids);
+ if (!np)
+ panic("unable to find compatible rstc node in dtb\n");
+
+ sirfsoc_rstc_base = of_iomap(np, 0);
+ if (!sirfsoc_rstc_base)
+ panic("unable to map rstc cpu registers\n");
+
+ of_node_put(np);
+
+ return 0;
+}
+early_initcall(sirfsoc_of_rstc_init);
+
+int sirfsoc_reset_device(struct device *dev)
+{
+ const unsigned int *prop = of_get_property(dev->of_node, "reset-bit", NULL);
+ unsigned int reset_bit;
+
+ if (!prop)
+ return -ENODEV;
+
+ reset_bit = be32_to_cpup(prop);
+
+ mutex_lock(&rstc_lock);
+
+ /*
+ * Writing 1 to this bit resets corresponding block. Writing 0 to this
+ * bit de-asserts reset signal of the corresponding block.
+ * datasheet doesn't require explicit delay between the set and clear
+ * of reset bit. it could be shorter if tests pass.
+ */
+ writel(readl(sirfsoc_rstc_base + (reset_bit / 32) * 4) | reset_bit,
+ sirfsoc_rstc_base + (reset_bit / 32) * 4);
+ msleep(10);
+ writel(readl(sirfsoc_rstc_base + (reset_bit / 32) * 4) & ~reset_bit,
+ sirfsoc_rstc_base + (reset_bit / 32) * 4);
+
+ mutex_unlock(&rstc_lock);
+
+ return 0;
+}
--- /dev/null
+/*
+ * System timer for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/clockchips.h>
+#include <linux/clocksource.h>
+#include <linux/bitops.h>
+#include <linux/irq.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <mach/map.h>
+#include <asm/mach/time.h>
+
+#define SIRFSOC_TIMER_COUNTER_LO 0x0000
+#define SIRFSOC_TIMER_COUNTER_HI 0x0004
+#define SIRFSOC_TIMER_MATCH_0 0x0008
+#define SIRFSOC_TIMER_MATCH_1 0x000C
+#define SIRFSOC_TIMER_MATCH_2 0x0010
+#define SIRFSOC_TIMER_MATCH_3 0x0014
+#define SIRFSOC_TIMER_MATCH_4 0x0018
+#define SIRFSOC_TIMER_MATCH_5 0x001C
+#define SIRFSOC_TIMER_STATUS 0x0020
+#define SIRFSOC_TIMER_INT_EN 0x0024
+#define SIRFSOC_TIMER_WATCHDOG_EN 0x0028
+#define SIRFSOC_TIMER_DIV 0x002C
+#define SIRFSOC_TIMER_LATCH 0x0030
+#define SIRFSOC_TIMER_LATCHED_LO 0x0034
+#define SIRFSOC_TIMER_LATCHED_HI 0x0038
+
+#define SIRFSOC_TIMER_WDT_INDEX 5
+
+#define SIRFSOC_TIMER_LATCH_BIT BIT(0)
+
+static void __iomem *sirfsoc_timer_base;
+static void __init sirfsoc_of_timer_map(void);
+
+/* timer0 interrupt handler */
+static irqreturn_t sirfsoc_timer_interrupt(int irq, void *dev_id)
+{
+ struct clock_event_device *ce = dev_id;
+
+ WARN_ON(!(readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_STATUS) & BIT(0)));
+
+ /* clear timer0 interrupt */
+ writel_relaxed(BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_STATUS);
+
+ ce->event_handler(ce);
+
+ return IRQ_HANDLED;
+}
+
+/* read 64-bit timer counter */
+static cycle_t sirfsoc_timer_read(struct clocksource *cs)
+{
+ u64 cycles;
+
+ /* latch the 64-bit timer counter */
+ writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
+ cycles = readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_HI);
+ cycles = (cycles << 32) | readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_LO);
+
+ return cycles;
+}
+
+static int sirfsoc_timer_set_next_event(unsigned long delta,
+ struct clock_event_device *ce)
+{
+ unsigned long now, next;
+
+ writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
+ now = readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_LO);
+ next = now + delta;
+ writel_relaxed(next, sirfsoc_timer_base + SIRFSOC_TIMER_MATCH_0);
+ writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
+ now = readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_LO);
+
+ return next - now > delta ? -ETIME : 0;
+}
+
+static void sirfsoc_timer_set_mode(enum clock_event_mode mode,
+ struct clock_event_device *ce)
+{
+ u32 val = readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);
+ switch (mode) {
+ case CLOCK_EVT_MODE_PERIODIC:
+ WARN_ON(1);
+ break;
+ case CLOCK_EVT_MODE_ONESHOT:
+ writel_relaxed(val | BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);
+ break;
+ case CLOCK_EVT_MODE_SHUTDOWN:
+ writel_relaxed(val & ~BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);
+ break;
+ case CLOCK_EVT_MODE_UNUSED:
+ case CLOCK_EVT_MODE_RESUME:
+ break;
+ }
+}
+
+static struct clock_event_device sirfsoc_clockevent = {
+ .name = "sirfsoc_clockevent",
+ .rating = 200,
+ .features = CLOCK_EVT_FEAT_ONESHOT,
+ .set_mode = sirfsoc_timer_set_mode,
+ .set_next_event = sirfsoc_timer_set_next_event,
+};
+
+static struct clocksource sirfsoc_clocksource = {
+ .name = "sirfsoc_clocksource",
+ .rating = 200,
+ .mask = CLOCKSOURCE_MASK(64),
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+ .read = sirfsoc_timer_read,
+};
+
+static struct irqaction sirfsoc_timer_irq = {
+ .name = "sirfsoc_timer0",
+ .flags = IRQF_TIMER,
+ .irq = 0,
+ .handler = sirfsoc_timer_interrupt,
+ .dev_id = &sirfsoc_clockevent,
+};
+
+/* Overwrite weak default sched_clock with more precise one */
+unsigned long long notrace sched_clock(void)
+{
+ static int is_mapped = 0;
+
+ /*
+ * sched_clock is called earlier than .init of sys_timer
+ * if we map timer memory in .init of sys_timer, system
+ * will panic due to illegal memory access
+ */
+ if(!is_mapped) {
+ sirfsoc_of_timer_map();
+ is_mapped = 1;
+ }
+
+ return sirfsoc_timer_read(NULL) * (NSEC_PER_SEC / CLOCK_TICK_RATE);
+}
+
+static void __init sirfsoc_clockevent_init(void)
+{
+ clockevents_calc_mult_shift(&sirfsoc_clockevent, CLOCK_TICK_RATE, 60);
+
+ sirfsoc_clockevent.max_delta_ns =
+ clockevent_delta2ns(-2, &sirfsoc_clockevent);
+ sirfsoc_clockevent.min_delta_ns =
+ clockevent_delta2ns(2, &sirfsoc_clockevent);
+
+ sirfsoc_clockevent.cpumask = cpumask_of(0);
+ clockevents_register_device(&sirfsoc_clockevent);
+}
+
+/* initialize the kernel jiffy timer source */
+static void __init sirfsoc_timer_init(void)
+{
+ unsigned long rate;
+
+ /* timer's input clock is io clock */
+ struct clk *clk = clk_get_sys("io", NULL);
+
+ BUG_ON(IS_ERR(clk));
+
+ rate = clk_get_rate(clk);
+
+ BUG_ON(rate < CLOCK_TICK_RATE);
+ BUG_ON(rate % CLOCK_TICK_RATE);
+
+ writel_relaxed(rate / CLOCK_TICK_RATE / 2 - 1, sirfsoc_timer_base + SIRFSOC_TIMER_DIV);
+ writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);
+ writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);
+ writel_relaxed(BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_STATUS);
+
+ BUG_ON(clocksource_register_hz(&sirfsoc_clocksource, CLOCK_TICK_RATE));
+
+ BUG_ON(setup_irq(sirfsoc_timer_irq.irq, &sirfsoc_timer_irq));
+
+ sirfsoc_clockevent_init();
+}
+
+static struct of_device_id timer_ids[] = {
+ { .compatible = "sirf,prima2-tick" },
+};
+
+static void __init sirfsoc_of_timer_map(void)
+{
+ struct device_node *np;
+ const unsigned int *intspec;
+
+ np = of_find_matching_node(NULL, timer_ids);
+ if (!np)
+ panic("unable to find compatible timer node in dtb\n");
+ sirfsoc_timer_base = of_iomap(np, 0);
+ if (!sirfsoc_timer_base)
+ panic("unable to map timer cpu registers\n");
+
+ /* Get the interrupts property */
+ intspec = of_get_property(np, "interrupts", NULL);
+ BUG_ON(!intspec);
+ sirfsoc_timer_irq.irq = be32_to_cpup(intspec);
+
+ of_node_put(np);
+}
+
+struct sys_timer sirfsoc_timer = {
+ .init = sirfsoc_timer_init,
+};
depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \
REALVIEW_EB_A9MP || SOC_IMX35 || SOC_IMX31 || MACH_REALVIEW_PBX || \
ARCH_NOMADIK || ARCH_OMAP4 || ARCH_EXYNOS4 || ARCH_TEGRA || \
- ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE
+ ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE || ARCH_PRIMA2
default y
select OUTER_CACHE
select OUTER_CACHE_SYNC
projects / linux-beck.git / commitdiff