2 * Copyright (C) ST-Ericsson SA 2009
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include <asm/types.h>
25 #include <asm/errno.h>
26 #include <asm/arch/clock.h>
27 #include <asm/arch/gpio.h>
28 #include <asm/arch/hardware.h>
29 #include <asm/arch/sys_proto.h>
30 #include <asm/arch/prcmu.h>
32 #include "../../../drivers/mmc/arm_pl180_mmci.h"
35 #define NOMADIK_PER4_BASE (0x80150000)
36 #define NOMADIK_BACKUPRAM0_BASE (NOMADIK_PER4_BASE + 0x00000)
37 #define NOMADIK_BACKUPRAM1_BASE (NOMADIK_PER4_BASE + 0x01000)
39 /* Power, Reset, Clock Management Unit */
41 * SVA: Smart Video Accelerator
42 * SIA: Smart Imaging Accelerator
43 * SGA: Smart Graphic accelerator
44 * B2R2: Graphic blitter
46 #define PRCM_ARMCLKFIX_MGT_REG (PRCMU_BASE + 0x000)
47 #define PRCM_ACLK_MGT_REG (PRCMU_BASE + 0x004)
48 #define PRCM_SVAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x008)
49 #define PRCM_SIAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x00C)
50 #define PRCM_SAAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x010)
51 #define PRCM_SGACLK_MGT_REG (PRCMU_BASE + 0x014)
52 #define PRCM_UARTCLK_MGT_REG (PRCMU_BASE + 0x018)
53 #define PRCM_MSPCLK_MGT_REG (PRCMU_BASE + 0x01C)
54 #define PRCM_I2CCLK_MGT_REG (PRCMU_BASE + 0x020)
55 #define PRCM_SDMMCCLK_MGT_REG (PRCMU_BASE + 0x024)
56 #define PRCM_SLIMCLK_MGT_REG (PRCMU_BASE + 0x028)
57 #define PRCM_PER1CLK_MGT_REG (PRCMU_BASE + 0x02C)
58 #define PRCM_PER2CLK_MGT_REG (PRCMU_BASE + 0x030)
59 #define PRCM_PER3CLK_MGT_REG (PRCMU_BASE + 0x034)
60 #define PRCM_PER5CLK_MGT_REG (PRCMU_BASE + 0x038)
61 #define PRCM_PER6CLK_MGT_REG (PRCMU_BASE + 0x03C)
62 #define PRCM_PER7CLK_MGT_REG (PRCMU_BASE + 0x040)
63 #define PRCM_DMACLK_MGT_REG (PRCMU_BASE + 0x074)
64 #define PRCM_B2R2CLK_MGT_REG (PRCMU_BASE + 0x078)
66 #define PRCM_PLLSOC0_FREQ_REG (PRCMU_BASE + 0x080)
67 #define PRCM_PLLSOC1_FREQ_REG (PRCMU_BASE + 0x084)
68 #define PRCM_PLLARM_FREQ_REG (PRCMU_BASE + 0x088)
69 #define PRCM_PLLDDR_FREQ_REG (PRCMU_BASE + 0x08C)
70 #define PRCM_ARM_CHGCLKREQ_REG (PRCMU_BASE + 0x114)
72 #define PRCM_TCR (PRCMU_BASE + 0x1C8)
75 * Memory controller register
77 #define DMC_BASE_ADDR 0x80156000
78 #define DMC_CTL_97 (DMC_BASE_ADDR + 0x184)
80 int board_id; /* set in board_late_init() */
82 /* PLLs for clock management registers */
85 PLLSOC0, /* pllsw = 001, ffs() = 1 */
86 PLLSOC1, /* pllsw = 010, ffs() = 2 */
87 PLLDDR, /* pllsw = 100, ffs() = 3 */
91 static struct pll_freq_regs {
92 int idx; /* index fror pll_name and pll_khz arrays */
95 {PLLSOC0, PRCM_PLLSOC0_FREQ_REG},
96 {PLLSOC1, PRCM_PLLSOC1_FREQ_REG},
97 {PLLDDR, PRCM_PLLDDR_FREQ_REG},
98 {PLLARM, PRCM_PLLARM_FREQ_REG},
102 static const char *pll_name[5] = {"GATED", "SOC0", "SOC1", "DDR", "ARM"};
103 static uint32_t pll_khz[5]; /* use ffs(pllsw(reg)) as index for 0..3 */
105 static struct clk_mgt_regs {
110 /* register content taken from bootrom settings */
111 {PRCM_ARMCLKFIX_MGT_REG, 0x0120, "ARMCLKFIX"}, /* ena, SOC0/0, ??? */
112 {PRCM_ACLK_MGT_REG, 0x0125, "ACLK"}, /* ena, SOC0/5, 160 MHz */
113 {PRCM_SVAMMDSPCLK_MGT_REG, 0x1122, "SVA"}, /* ena, SOC0/2, 400 MHz */
114 {PRCM_SIAMMDSPCLK_MGT_REG, 0x0022, "SIA"}, /* dis, SOC0/2, 400 MHz */
115 {PRCM_SAAMMDSPCLK_MGT_REG, 0x0822, "SAA"}, /* dis, SOC0/4, 200 MHz */
116 {PRCM_SGACLK_MGT_REG, 0x0024, "SGA"}, /* dis, SOC0/4, 200 MHz */
117 {PRCM_UARTCLK_MGT_REG, 0x0300, "UART"}, /* ena, GATED, CLK38 */
118 {PRCM_MSPCLK_MGT_REG, 0x0200, "MSP"}, /* dis, GATED, CLK38 */
119 {PRCM_I2CCLK_MGT_REG, 0x0130, "I2C"}, /* ena, SOC0/16, 50 MHz */
120 {PRCM_SDMMCCLK_MGT_REG, 0x0130, "SDMMC"}, /* ena, SOC0/16, 50 MHz */
121 {PRCM_PER1CLK_MGT_REG, 0x126, "PER1"}, /* ena, SOC0/6, 133 MHz */
122 {PRCM_PER2CLK_MGT_REG, 0x126, "PER2"}, /* ena, SOC0/6, 133 MHz */
123 {PRCM_PER3CLK_MGT_REG, 0x126, "PER3"}, /* ena, SOC0/6, 133 MHz */
124 {PRCM_PER5CLK_MGT_REG, 0x126, "PER5"}, /* ena, SOC0/6, 133 MHz */
125 {PRCM_PER6CLK_MGT_REG, 0x126, "PER6"}, /* ena, SOC0/6, 133 MHz */
126 {PRCM_PER7CLK_MGT_REG, 0x128, "PER7"}, /* ena, SOC0/8, 100 MHz */
127 {PRCM_DMACLK_MGT_REG, 0x125, "DMA"}, /* ena, SOC0/5, 160 MHz */
128 {PRCM_B2R2CLK_MGT_REG, 0x025, "B2R2"}, /* dis, SOC0/5, 160 MHz */
132 static void init_regs(void);
134 DECLARE_GLOBAL_DATA_PTR;
135 #if defined(CONFIG_SHOW_BOOT_PROGRESS)
136 void show_boot_progress(int progress)
138 printf("Boot reached stage %d\n", progress);
143 * Miscellaneous platform dependent initialisations
146 int board_early_init_f(void)
154 uint32_t unused_cols_rows;
158 gd->bd->bi_arch_number = 0x1A4;
159 gd->bd->bi_boot_params = 0x00000100;
160 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
163 * Assumption: 2 CS active, both CS have same layout.
164 * 15 rows max, 11 cols max (controller spec).
165 * memory chip has 8 banks, I/O width 32 bit.
166 * The correct way would be to read MR#8: I/O width and density,
167 * but this requires locking against the PRCMU firmware.
168 * Simplified approach:
169 * Read number of unused rows and columns from mem controller.
170 * size = nCS x 2^(rows+cols) x nbanks x buswidth_bytes
172 unused_cols_rows = readl(DMC_CTL_97);
173 nrows = 15 - (unused_cols_rows & 0x07);
174 ncols = 11 - ((unused_cols_rows & 0x0700) >> 8);
175 gd->bd->bi_dram[0].size = 2 * (1 << (nrows + ncols)) * 8 * 4;
184 gd->ram_size = PHYS_SDRAM_SIZE_1;
189 unsigned int addr_vall_arr[] = {
190 0x8011F000, 0x0000FFFF, /* Clocks for HSI TODO: Enable reqd only */
191 0x8011F008, 0x00001CFF, /* Clocks for HSI TODO: Enable reqd only */
192 0x8000F000, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */
193 0x8000F008, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */
194 0x80157020, 0x00000150, /* I2C 48MHz clock */
195 0x8012F000, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */
196 0x8012F008, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */
197 0xA03DF000, 0x0000000D, /* Clock for MTU Timers */
198 0x8011E00C, 0x00000000, /* GPIO ALT FUNC for EMMC */
199 0x8011E004, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */
200 0x8011E020, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */
201 0x8011E024, 0x00000000, /* GPIO ALT FUNC for EMMC */
202 0x8012E000, 0x20000000, /* GPIO ALT FUNC for UART */
203 0x8012E00C, 0x00000000, /* GPIO ALT FUNC for SD */
204 0x8012E004, 0x0FFC0000, /* GPIO ALT FUNC for SD */
205 0x8012E020, 0x60000000, /* GPIO ALT FUNC for SD */
206 0x8012E024, 0x60000000, /* GPIO ALT FUNC for SD */
207 0x801571E4, 0x0000000C, /* PRCMU settings for B2R2,
208 PRCM_APE_RESETN_SET_REG */
209 0x80157024, 0x00000130, /* PRCMU settings for EMMC/SD */
210 0xA03FF000, 0x00000003, /* USB */
211 0xA03FF008, 0x00000001, /* USB */
212 0xA03FE00C, 0x00000000, /* USB */
213 0xA03FE020, 0x00000FFF, /* USB */
214 0xA03FE024, 0x00000000 /* USB */
217 #ifdef CONFIG_BOARD_LATE_INIT
219 * called after all initialisation were done, but before the generic
222 int board_late_init(void)
227 * Determine and set board_id environment variable
228 * 0: mop500, 1: href500
229 * Above boards have different GPIO expander chips which we can
230 * distinguish by the chip id.
232 * The board_id environment variable is needed for the Linux bootargs.
234 (void) i2c_set_bus_num(0);
235 (void) i2c_read(CONFIG_SYS_I2C_GPIOE_ADDR, 0x80, 1, &byte, 1);
238 setenv("board_id", "0");
241 setenv("board_id", "1");
244 u8500_mmc_power_init();
247 * config extended GPIO pins for level shifter and
253 (void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x89, 1, &byte, 1);
254 (void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x83, 1, &byte, 1);
257 /* set the direction of GPIO KPY9 and KPY10 */
259 (void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC8, 1, &byte, 1);
260 /* must be a multibyte access */
261 (void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC4, 1,
262 (uchar []) {0x06, 0x06}, 2);
264 #endif /* CONFIG_MMC */
266 * Create a memargs variable which points uses either the memargs256 or
267 * memargs512 environment variable, depending on the memory size.
268 * memargs is used to build the bootargs, memargs256 and memargs512 are
269 * stored in the environment.
271 if (gd->bd->bi_dram[0].size == 0x10000000) {
272 setenv("memargs", "setenv bootargs ${bootargs} ${memargs256}");
273 setenv("mem", "256M");
275 setenv("memargs", "setenv bootargs ${bootargs} ${memargs512}");
276 setenv("mem", "512M");
281 #endif /* CONFIG_BOARD_LATE_INIT */
283 static void early_gpio_setup(struct gpio_register *gpio_reg, u32 bits)
285 writel(readl(&gpio_reg->gpio_dats) | bits, &gpio_reg->gpio_dats);
286 writel(readl(&gpio_reg->gpio_pdis) & ~bits, &gpio_reg->gpio_pdis);
289 static void init_regs(void)
291 /* FIXME Remove magic register array settings for ED also */
292 struct prcmu *prcmu = (struct prcmu *) U8500_PRCMU_BASE;
295 writel(1 << 17, &prcmu->tcr);
297 u8500_prcmu_enable(&prcmu->per1clk_mgt);
298 u8500_prcmu_enable(&prcmu->per2clk_mgt);
299 u8500_prcmu_enable(&prcmu->per3clk_mgt);
300 u8500_prcmu_enable(&prcmu->per5clk_mgt);
301 u8500_prcmu_enable(&prcmu->per6clk_mgt);
302 u8500_prcmu_enable(&prcmu->per7clk_mgt);
304 u8500_prcmu_enable(&prcmu->uartclk_mgt);
305 u8500_prcmu_enable(&prcmu->i2cclk_mgt);
307 u8500_prcmu_enable(&prcmu->sdmmcclk_mgt);
309 u8500_clock_enable(1, 9, -1); /* GPIO0 */
311 u8500_clock_enable(2, 11, -1); /* GPIO1 */
313 u8500_clock_enable(3, 8, -1); /* GPIO2 */
314 u8500_clock_enable(5, 1, -1); /* GPIO3 */
316 u8500_clock_enable(3, 6, 6); /* UART2 */
318 gpio_altfuncenable(GPIO_ALT_I2C_0, "I2C0");
319 u8500_clock_enable(3, 3, 3); /* I2C0 */
321 early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x60000000);
322 gpio_altfuncenable(GPIO_ALT_UART_2, "UART2");
324 early_gpio_setup((struct gpio_register *)U8500_GPIO_6_BASE, 0x0000ffe0);
325 gpio_altfuncenable(GPIO_ALT_EMMC, "EMMC");
327 early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x0000ffe0);
328 gpio_altfuncenable(GPIO_ALT_SD_CARD0, "SDCARD");
330 u8500_clock_enable(1, 5, 5); /* SDI0 */
331 u8500_clock_enable(2, 4, 2); /* SDI4 */
333 u8500_clock_enable(6, 7, -1); /* MTU0 */
334 u8500_clock_enable(3, 4, 4); /* SDI2 */
336 early_gpio_setup((struct gpio_register *)U8500_GPIO_4_BASE, 0x000007ff);
337 gpio_altfuncenable(GPIO_ALT_POP_EMMC, "EMMC");
340 * Enabling clocks for all devices which are AMBA devices in the
341 * kernel. Otherwise they will not get probe()'d because the
342 * peripheral ID register will not be powered.
345 /* XXX: some of these differ between ED/V1 */
347 u8500_clock_enable(1, 1, 1); /* UART1 */
348 u8500_clock_enable(1, 0, 0); /* UART0 */
350 u8500_clock_enable(3, 2, 2); /* SSP1 */
351 u8500_clock_enable(3, 1, 1); /* SSP0 */
353 u8500_clock_enable(2, 8, -1); /* SPI0 */
354 u8500_clock_enable(2, 5, 3); /* MSP2 */
358 static int u8500_mmci_board_init(void)
360 enum gpio_error error;
361 struct gpio_register *gpio_base_address;
363 gpio_base_address = (void *)(U8500_GPIO_0_BASE);
364 gpio_base_address->gpio_dats |= 0xFFC0000;
365 gpio_base_address->gpio_pdis &= ~0xFFC0000;
367 /* save the GPIO0 AFSELA register */
368 error = gpio_altfuncenable(GPIO_ALT_SD_CARD0, "MMC");
369 if (error != GPIO_OK) {
370 printf("u8500_mmci_board_init() gpio_altfuncenable failed\n");
376 int board_mmc_init(bd_t *bd)
378 struct pl180_mmc_host *host;
380 if (u8500_mmci_board_init())
383 host = malloc(sizeof(struct pl180_mmc_host));
386 memset(host, 0, sizeof(*host));
388 strcpy(host->name, "MMC");
389 host->base = (struct sdi_registers *)CONFIG_ARM_PL180_MMCI_BASE;
390 host->pwr_init = INIT_PWR;
391 host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V1 | SDI_CLKCR_CLKEN;
392 host->voltages = VOLTAGE_WINDOW_MMC;
394 host->clock_in = ARM_MCLK;
395 host->clock_min = ARM_MCLK / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1));
396 host->clock_max = CONFIG_ARM_PL180_MMCI_CLOCK_FREQ;
398 return arm_pl180_mmci_init(host);
404 * get_pll_freq_khz - return PLL frequency in kHz
406 static uint32_t get_pll_freq_khz(uint32_t inclk_khz, uint32_t freq_reg)
408 uint32_t idf, ldf, odf, seldiv, phi;
411 * PLLOUTCLK = PHI = (INCLK*LDF)/(2*ODF*IDF) if SELDIV2=0
412 * PLLOUTCLK = PHI = (INCLK*LDF)/(4*ODF*IDF) if SELDIV2=1
414 * IDF=R(2:0) (when R=000, IDF=1d)
415 * LDF = 2*D(7:0) (D must be greater than or equal to 6)
416 * ODF = N(5:0) (when N=000000, 0DF=1d)
419 idf = (freq_reg & 0x70000) >> 16;
420 ldf = (freq_reg & 0xff) * 2;
421 odf = (freq_reg & 0x3f00) >> 8;
422 seldiv = (freq_reg & 0x01000000) >> 24;
423 phi = (inclk_khz * ldf) / (2 * odf * idf);
430 int do_clkinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
435 unsigned int clk_sel;
436 struct clk_mgt_regs *clks = clk_mgt_regs;
437 struct pll_freq_regs *plls = pll_freq_regs;
440 * Go through list of PLLs.
441 * Initialise pll out frequency array (pll_khz) and print frequency.
443 inclk_khz = 38400; /* 38.4 MHz */
445 reg = readl(plls->addr);
446 phi = get_pll_freq_khz(inclk_khz, reg);
447 pll_khz[plls->idx] = phi;
448 printf("%s PLL out frequency: %d.%d Mhz\n",
449 pll_name[plls->idx], phi/1000, phi % 1000);
453 /* check ARM clock source */
454 reg = readl(PRCM_ARM_CHGCLKREQ_REG);
455 printf("A9 running on %s\n",
456 (reg & 1) ? "external clock" : "ARM PLL");
458 /* go through list of clk_mgt_reg */
459 printf("\n%19s %9s %7s %9s enabled\n",
460 "name(addr)", "value", "PLL", "CLK[MHz]");
462 reg = readl(clks->addr);
464 /* convert bit position into array index */
465 clk_sel = ffs((reg >> 5) & 0x7); /* PLLSW[2:0] */
468 clk_khz = 38400; /* CLK38 is set */
469 else if ((reg & 0x1f) == 0)
470 /* ARMCLKFIX_MGT is 0x120, e.g. div = 0 ! */
473 clk_khz = pll_khz[clk_sel] / (reg & 0x1f);
475 printf("%9s(%08x): %08x, %6s, %4d.%03d, %s\n",
476 clks->descr, clks->addr, reg, pll_name[clk_sel],
477 clk_khz / 1000, clk_khz % 1000,
478 (reg & 0x100) ? "ena" : "dis");
486 clkinfo, 1, 1, do_clkinfo,