2 * Versatile Express Core Tile Cortex A9x4 Support
4 #include <linux/init.h>
6 #include <linux/device.h>
7 #include <linux/dma-mapping.h>
8 #include <linux/platform_device.h>
9 #include <linux/amba/bus.h>
10 #include <linux/amba/clcd.h>
11 #include <linux/clkdev.h>
13 #include <asm/pgtable.h>
14 #include <asm/hardware/arm_timer.h>
15 #include <asm/hardware/cache-l2x0.h>
16 #include <asm/hardware/gic.h>
17 #include <asm/mach-types.h>
19 #include <asm/smp_twd.h>
21 #include <mach/ct-ca9x4.h>
23 #include <asm/hardware/timer-sp.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/map.h>
27 #include <asm/mach/time.h>
31 #include <mach/motherboard.h>
33 #define V2M_PA_CS7 0x10000000
35 static struct map_desc ct_ca9x4_io_desc[] __initdata = {
37 .virtual = __MMIO_P2V(CT_CA9X4_MPIC),
38 .pfn = __phys_to_pfn(CT_CA9X4_MPIC),
42 .virtual = __MMIO_P2V(CT_CA9X4_SP804_TIMER),
43 .pfn = __phys_to_pfn(CT_CA9X4_SP804_TIMER),
47 .virtual = __MMIO_P2V(CT_CA9X4_L2CC),
48 .pfn = __phys_to_pfn(CT_CA9X4_L2CC),
54 static void __init ct_ca9x4_map_io(void)
56 #ifdef CONFIG_LOCAL_TIMERS
57 twd_base = MMIO_P2V(A9_MPCORE_TWD);
59 v2m_map_io(ct_ca9x4_io_desc, ARRAY_SIZE(ct_ca9x4_io_desc));
62 static void __init ct_ca9x4_init_irq(void)
64 gic_init(0, 29, MMIO_P2V(A9_MPCORE_GIC_DIST),
65 MMIO_P2V(A9_MPCORE_GIC_CPU));
69 static void __init ct_ca9x4_timer_init(void)
71 writel(0, MMIO_P2V(CT_CA9X4_TIMER0) + TIMER_CTRL);
72 writel(0, MMIO_P2V(CT_CA9X4_TIMER1) + TIMER_CTRL);
74 sp804_clocksource_init(MMIO_P2V(CT_CA9X4_TIMER1));
75 sp804_clockevents_init(MMIO_P2V(CT_CA9X4_TIMER0), IRQ_CT_CA9X4_TIMER0);
78 static struct sys_timer ct_ca9x4_timer = {
79 .init = ct_ca9x4_timer_init,
83 static struct clcd_panel xvga_panel = {
97 .vmode = FB_VMODE_NONINTERLACED,
101 .tim2 = TIM2_BCD | TIM2_IPC,
102 .cntl = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
106 static void ct_ca9x4_clcd_enable(struct clcd_fb *fb)
108 v2m_cfg_write(SYS_CFG_MUXFPGA | SYS_CFG_SITE_DB1, 0);
109 v2m_cfg_write(SYS_CFG_DVIMODE | SYS_CFG_SITE_DB1, 2);
112 static int ct_ca9x4_clcd_setup(struct clcd_fb *fb)
114 unsigned long framesize = 1024 * 768 * 2;
117 fb->panel = &xvga_panel;
119 fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize,
121 if (!fb->fb.screen_base) {
122 printk(KERN_ERR "CLCD: unable to map frame buffer\n");
125 fb->fb.fix.smem_start = dma;
126 fb->fb.fix.smem_len = framesize;
131 static int ct_ca9x4_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
133 return dma_mmap_writecombine(&fb->dev->dev, vma, fb->fb.screen_base,
134 fb->fb.fix.smem_start, fb->fb.fix.smem_len);
137 static void ct_ca9x4_clcd_remove(struct clcd_fb *fb)
139 dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
140 fb->fb.screen_base, fb->fb.fix.smem_start);
143 static struct clcd_board ct_ca9x4_clcd_data = {
145 .check = clcdfb_check,
146 .decode = clcdfb_decode,
147 .enable = ct_ca9x4_clcd_enable,
148 .setup = ct_ca9x4_clcd_setup,
149 .mmap = ct_ca9x4_clcd_mmap,
150 .remove = ct_ca9x4_clcd_remove,
153 static AMBA_DEVICE(clcd, "ct:clcd", CT_CA9X4_CLCDC, &ct_ca9x4_clcd_data);
154 static AMBA_DEVICE(dmc, "ct:dmc", CT_CA9X4_DMC, NULL);
155 static AMBA_DEVICE(smc, "ct:smc", CT_CA9X4_SMC, NULL);
156 static AMBA_DEVICE(gpio, "ct:gpio", CT_CA9X4_GPIO, NULL);
158 static struct amba_device *ct_ca9x4_amba_devs[] __initdata = {
166 static long ct_round(struct clk *clk, unsigned long rate)
171 static int ct_set(struct clk *clk, unsigned long rate)
173 return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_DB1 | 1, rate);
176 static const struct clk_ops osc1_clk_ops = {
181 static struct clk osc1_clk = {
182 .ops = &osc1_clk_ops,
186 static struct clk_lookup lookups[] = {
193 static struct resource pmu_resources[] = {
195 .start = IRQ_CT_CA9X4_PMU_CPU0,
196 .end = IRQ_CT_CA9X4_PMU_CPU0,
197 .flags = IORESOURCE_IRQ,
200 .start = IRQ_CT_CA9X4_PMU_CPU1,
201 .end = IRQ_CT_CA9X4_PMU_CPU1,
202 .flags = IORESOURCE_IRQ,
205 .start = IRQ_CT_CA9X4_PMU_CPU2,
206 .end = IRQ_CT_CA9X4_PMU_CPU2,
207 .flags = IORESOURCE_IRQ,
210 .start = IRQ_CT_CA9X4_PMU_CPU3,
211 .end = IRQ_CT_CA9X4_PMU_CPU3,
212 .flags = IORESOURCE_IRQ,
216 static struct platform_device pmu_device = {
218 .id = ARM_PMU_DEVICE_CPU,
219 .num_resources = ARRAY_SIZE(pmu_resources),
220 .resource = pmu_resources,
223 static void __init ct_ca9x4_init(void)
227 #ifdef CONFIG_CACHE_L2X0
228 void __iomem *l2x0_base = MMIO_P2V(CT_CA9X4_L2CC);
230 /* set RAM latencies to 1 cycle for this core tile. */
231 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
232 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
234 l2x0_init(l2x0_base, 0x00400000, 0xfe0fffff);
237 clkdev_add_table(lookups, ARRAY_SIZE(lookups));
239 for (i = 0; i < ARRAY_SIZE(ct_ca9x4_amba_devs); i++)
240 amba_device_register(ct_ca9x4_amba_devs[i], &iomem_resource);
242 platform_device_register(&pmu_device);
245 MACHINE_START(VEXPRESS, "ARM-Versatile Express CA9x4")
246 .boot_params = PHYS_OFFSET + 0x00000100,
247 .map_io = ct_ca9x4_map_io,
248 .init_irq = ct_ca9x4_init_irq,
250 .timer = &ct_ca9x4_timer,
254 .init_machine = ct_ca9x4_init,