2 * arch/arm/mach-mv78xx0/common.c
4 * Core functions for Marvell MV78xx0 SoCs
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/serial_8250.h>
15 #include <linux/mbus.h>
16 #include <linux/ata_platform.h>
17 #include <linux/ethtool.h>
18 #include <asm/mach/map.h>
19 #include <asm/mach/time.h>
20 #include <mach/mv78xx0.h>
21 #include <mach/bridge-regs.h>
22 #include <plat/cache-feroceon-l2.h>
23 #include <plat/ehci-orion.h>
24 #include <plat/orion_nand.h>
25 #include <plat/time.h>
26 #include <plat/common.h>
29 static int get_tclk(void);
31 /*****************************************************************************
33 ****************************************************************************/
34 int mv78xx0_core_index(void)
39 * Read Extra Features register.
41 __asm__("mrc p15, 1, %0, c15, c1, 0" : "=r" (extra));
43 return !!(extra & 0x00004000);
46 static int get_hclk(void)
51 * HCLK tick rate is configured by DEV_D[7:5] pins.
53 switch ((readl(SAMPLE_AT_RESET_LOW) >> 5) & 7) {
70 panic("unknown HCLK PLL setting: %.8x\n",
71 readl(SAMPLE_AT_RESET_LOW));
77 static void get_pclk_l2clk(int hclk, int core_index, int *pclk, int *l2clk)
82 * Core #0 PCLK/L2CLK is configured by bits [13:8], core #1
83 * PCLK/L2CLK by bits [19:14].
85 if (core_index == 0) {
86 cfg = (readl(SAMPLE_AT_RESET_LOW) >> 8) & 0x3f;
88 cfg = (readl(SAMPLE_AT_RESET_LOW) >> 14) & 0x3f;
92 * Bits [11:8] ([17:14] for core #1) configure the PCLK:HCLK
93 * ratio (1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6).
95 *pclk = ((u64)hclk * (2 + (cfg & 0xf))) >> 1;
98 * Bits [13:12] ([19:18] for core #1) configure the PCLK:L2CLK
101 *l2clk = *pclk / (((cfg >> 4) & 3) + 1);
104 static int get_tclk(void)
109 * TCLK tick rate is configured by DEV_A[2:0] strap pins.
111 switch ((readl(SAMPLE_AT_RESET_HIGH) >> 6) & 7) {
119 panic("unknown TCLK PLL setting: %.8x\n",
120 readl(SAMPLE_AT_RESET_HIGH));
127 /*****************************************************************************
128 * I/O Address Mapping
129 ****************************************************************************/
130 static struct map_desc mv78xx0_io_desc[] __initdata = {
132 .virtual = MV78XX0_CORE_REGS_VIRT_BASE,
134 .length = MV78XX0_CORE_REGS_SIZE,
137 .virtual = MV78XX0_PCIE_IO_VIRT_BASE(0),
138 .pfn = __phys_to_pfn(MV78XX0_PCIE_IO_PHYS_BASE(0)),
139 .length = MV78XX0_PCIE_IO_SIZE * 8,
142 .virtual = MV78XX0_REGS_VIRT_BASE,
143 .pfn = __phys_to_pfn(MV78XX0_REGS_PHYS_BASE),
144 .length = MV78XX0_REGS_SIZE,
149 void __init mv78xx0_map_io(void)
154 * Map the right set of per-core registers depending on
155 * which core we are running on.
157 if (mv78xx0_core_index() == 0) {
158 phys = MV78XX0_CORE0_REGS_PHYS_BASE;
160 phys = MV78XX0_CORE1_REGS_PHYS_BASE;
162 mv78xx0_io_desc[0].pfn = __phys_to_pfn(phys);
164 iotable_init(mv78xx0_io_desc, ARRAY_SIZE(mv78xx0_io_desc));
168 /*****************************************************************************
170 ****************************************************************************/
171 void __init mv78xx0_ehci0_init(void)
173 orion_ehci_init(&mv78xx0_mbus_dram_info,
174 USB0_PHYS_BASE, IRQ_MV78XX0_USB_0, EHCI_PHY_NA);
178 /*****************************************************************************
180 ****************************************************************************/
181 void __init mv78xx0_ehci1_init(void)
183 orion_ehci_1_init(&mv78xx0_mbus_dram_info,
184 USB1_PHYS_BASE, IRQ_MV78XX0_USB_1);
188 /*****************************************************************************
190 ****************************************************************************/
191 void __init mv78xx0_ehci2_init(void)
193 orion_ehci_2_init(&mv78xx0_mbus_dram_info,
194 USB2_PHYS_BASE, IRQ_MV78XX0_USB_2);
198 /*****************************************************************************
200 ****************************************************************************/
201 void __init mv78xx0_ge00_init(struct mv643xx_eth_platform_data *eth_data)
203 orion_ge00_init(eth_data, &mv78xx0_mbus_dram_info,
204 GE00_PHYS_BASE, IRQ_MV78XX0_GE00_SUM,
205 IRQ_MV78XX0_GE_ERR, get_tclk(),
206 MV643XX_TX_CSUM_DEFAULT_LIMIT);
210 /*****************************************************************************
212 ****************************************************************************/
213 void __init mv78xx0_ge01_init(struct mv643xx_eth_platform_data *eth_data)
215 orion_ge01_init(eth_data, &mv78xx0_mbus_dram_info,
216 GE01_PHYS_BASE, IRQ_MV78XX0_GE01_SUM,
218 MV643XX_TX_CSUM_DEFAULT_LIMIT);
222 /*****************************************************************************
224 ****************************************************************************/
225 void __init mv78xx0_ge10_init(struct mv643xx_eth_platform_data *eth_data)
230 * On the Z0, ge10 and ge11 are internally connected back
231 * to back, and not brought out.
233 mv78xx0_pcie_id(&dev, &rev);
234 if (dev == MV78X00_Z0_DEV_ID) {
235 eth_data->phy_addr = MV643XX_ETH_PHY_NONE;
236 eth_data->speed = SPEED_1000;
237 eth_data->duplex = DUPLEX_FULL;
240 orion_ge10_init(eth_data, &mv78xx0_mbus_dram_info,
241 GE10_PHYS_BASE, IRQ_MV78XX0_GE10_SUM,
246 /*****************************************************************************
248 ****************************************************************************/
249 void __init mv78xx0_ge11_init(struct mv643xx_eth_platform_data *eth_data)
254 * On the Z0, ge10 and ge11 are internally connected back
255 * to back, and not brought out.
257 mv78xx0_pcie_id(&dev, &rev);
258 if (dev == MV78X00_Z0_DEV_ID) {
259 eth_data->phy_addr = MV643XX_ETH_PHY_NONE;
260 eth_data->speed = SPEED_1000;
261 eth_data->duplex = DUPLEX_FULL;
264 orion_ge11_init(eth_data, &mv78xx0_mbus_dram_info,
265 GE11_PHYS_BASE, IRQ_MV78XX0_GE11_SUM,
269 /*****************************************************************************
271 ****************************************************************************/
272 void __init mv78xx0_i2c_init(void)
274 orion_i2c_init(I2C_0_PHYS_BASE, IRQ_MV78XX0_I2C_0, 8);
275 orion_i2c_1_init(I2C_1_PHYS_BASE, IRQ_MV78XX0_I2C_1, 8);
278 /*****************************************************************************
280 ****************************************************************************/
281 void __init mv78xx0_sata_init(struct mv_sata_platform_data *sata_data)
283 orion_sata_init(sata_data, &mv78xx0_mbus_dram_info,
284 SATA_PHYS_BASE, IRQ_MV78XX0_SATA);
288 /*****************************************************************************
290 ****************************************************************************/
291 void __init mv78xx0_uart0_init(void)
293 orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
294 IRQ_MV78XX0_UART_0, get_tclk());
298 /*****************************************************************************
300 ****************************************************************************/
301 void __init mv78xx0_uart1_init(void)
303 orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
304 IRQ_MV78XX0_UART_1, get_tclk());
308 /*****************************************************************************
310 ****************************************************************************/
311 void __init mv78xx0_uart2_init(void)
313 orion_uart2_init(UART2_VIRT_BASE, UART2_PHYS_BASE,
314 IRQ_MV78XX0_UART_2, get_tclk());
317 /*****************************************************************************
319 ****************************************************************************/
320 void __init mv78xx0_uart3_init(void)
322 orion_uart3_init(UART3_VIRT_BASE, UART3_PHYS_BASE,
323 IRQ_MV78XX0_UART_3, get_tclk());
326 /*****************************************************************************
328 ****************************************************************************/
329 void __init mv78xx0_init_early(void)
331 orion_time_set_base(TIMER_VIRT_BASE);
334 static void mv78xx0_timer_init(void)
336 orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
337 IRQ_MV78XX0_TIMER_1, get_tclk());
340 struct sys_timer mv78xx0_timer = {
341 .init = mv78xx0_timer_init,
345 /*****************************************************************************
347 ****************************************************************************/
348 static char * __init mv78xx0_id(void)
352 mv78xx0_pcie_id(&dev, &rev);
354 if (dev == MV78X00_Z0_DEV_ID) {
355 if (rev == MV78X00_REV_Z0)
358 return "MV78X00-Rev-Unsupported";
359 } else if (dev == MV78100_DEV_ID) {
360 if (rev == MV78100_REV_A0)
362 else if (rev == MV78100_REV_A1)
365 return "MV78100-Rev-Unsupported";
366 } else if (dev == MV78200_DEV_ID) {
367 if (rev == MV78100_REV_A0)
370 return "MV78200-Rev-Unsupported";
372 return "Device-Unknown";
376 static int __init is_l2_writethrough(void)
378 return !!(readl(CPU_CONTROL) & L2_WRITETHROUGH);
381 void __init mv78xx0_init(void)
389 core_index = mv78xx0_core_index();
391 get_pclk_l2clk(hclk, core_index, &pclk, &l2clk);
394 printk(KERN_INFO "%s ", mv78xx0_id());
395 printk("core #%d, ", core_index);
396 printk("PCLK = %dMHz, ", (pclk + 499999) / 1000000);
397 printk("L2 = %dMHz, ", (l2clk + 499999) / 1000000);
398 printk("HCLK = %dMHz, ", (hclk + 499999) / 1000000);
399 printk("TCLK = %dMHz\n", (tclk + 499999) / 1000000);
401 mv78xx0_setup_cpu_mbus();
403 #ifdef CONFIG_CACHE_FEROCEON_L2
404 feroceon_l2_init(is_l2_writethrough());