[people/ms/u-boot.git] / board / st-ericsson / u8500 / u8500_href.c

/*
 * Copyright (C) ST-Ericsson SA 2009
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <config.h>
#include <common.h>
#include <malloc.h>
#include <i2c.h>
#include <asm/types.h>
#include <asm/io.h>
#include <asm/errno.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/prcmu.h>
#ifdef CONFIG_MMC
#include "../../../drivers/mmc/arm_pl180_mmci.h"
#endif

#define NOMADIK_PER4_BASE	(0x80150000)
#define NOMADIK_BACKUPRAM0_BASE (NOMADIK_PER4_BASE + 0x00000)
#define NOMADIK_BACKUPRAM1_BASE (NOMADIK_PER4_BASE + 0x01000)

/* Power, Reset, Clock Management Unit */
/*
 * SVA: Smart Video Accelerator
 * SIA: Smart Imaging Accelerator
 * SGA: Smart Graphic accelerator
 * B2R2: Graphic blitter
 */
#define PRCM_ARMCLKFIX_MGT_REG		(PRCMU_BASE + 0x000)
#define PRCM_ACLK_MGT_REG		(PRCMU_BASE + 0x004)
#define PRCM_SVAMMDSPCLK_MGT_REG	(PRCMU_BASE + 0x008)
#define PRCM_SIAMMDSPCLK_MGT_REG	(PRCMU_BASE + 0x00C)
#define PRCM_SAAMMDSPCLK_MGT_REG	(PRCMU_BASE + 0x010)
#define PRCM_SGACLK_MGT_REG		(PRCMU_BASE + 0x014)
#define PRCM_UARTCLK_MGT_REG		(PRCMU_BASE + 0x018)
#define PRCM_MSPCLK_MGT_REG		(PRCMU_BASE + 0x01C)
#define PRCM_I2CCLK_MGT_REG		(PRCMU_BASE + 0x020)
#define PRCM_SDMMCCLK_MGT_REG		(PRCMU_BASE + 0x024)
#define PRCM_SLIMCLK_MGT_REG		(PRCMU_BASE + 0x028)
#define PRCM_PER1CLK_MGT_REG		(PRCMU_BASE + 0x02C)
#define PRCM_PER2CLK_MGT_REG		(PRCMU_BASE + 0x030)
#define PRCM_PER3CLK_MGT_REG		(PRCMU_BASE + 0x034)
#define PRCM_PER5CLK_MGT_REG		(PRCMU_BASE + 0x038)
#define PRCM_PER6CLK_MGT_REG		(PRCMU_BASE + 0x03C)
#define PRCM_PER7CLK_MGT_REG		(PRCMU_BASE + 0x040)
#define PRCM_DMACLK_MGT_REG		(PRCMU_BASE + 0x074)
#define PRCM_B2R2CLK_MGT_REG		(PRCMU_BASE + 0x078)

#define PRCM_PLLSOC0_FREQ_REG		(PRCMU_BASE + 0x080)
#define PRCM_PLLSOC1_FREQ_REG		(PRCMU_BASE + 0x084)
#define PRCM_PLLARM_FREQ_REG		(PRCMU_BASE + 0x088)
#define PRCM_PLLDDR_FREQ_REG		(PRCMU_BASE + 0x08C)
#define PRCM_ARM_CHGCLKREQ_REG		(PRCMU_BASE + 0x114)

#define PRCM_TCR			(PRCMU_BASE + 0x1C8)

/*
 * Memory controller register
 */
#define DMC_BASE_ADDR			0x80156000
#define DMC_CTL_97			(DMC_BASE_ADDR + 0x184)

int board_id;	/* set in board_late_init() */

/* PLLs for clock management registers */
enum {
	GATED = 0,
	PLLSOC0,	/* pllsw = 001, ffs() = 1 */
	PLLSOC1,	/* pllsw = 010, ffs() = 2 */
	PLLDDR,		/* pllsw = 100, ffs() = 3 */
	PLLARM,
};

static struct pll_freq_regs {
	int idx;	/* index fror pll_name and pll_khz arrays */
	uint32_t addr;
} pll_freq_regs[] = {
	{PLLSOC0, PRCM_PLLSOC0_FREQ_REG},
	{PLLSOC1, PRCM_PLLSOC1_FREQ_REG},
	{PLLDDR, PRCM_PLLDDR_FREQ_REG},
	{PLLARM, PRCM_PLLARM_FREQ_REG},
	{0, 0},
};

static const char *pll_name[5] = {"GATED", "SOC0", "SOC1", "DDR", "ARM"};
static uint32_t pll_khz[5];	/* use ffs(pllsw(reg)) as index for 0..3 */

static struct clk_mgt_regs {
	uint32_t addr;
	uint32_t val;
	const char *descr;
} clk_mgt_regs[] = {
	/* register content taken from bootrom settings */
	{PRCM_ARMCLKFIX_MGT_REG, 0x0120, "ARMCLKFIX"}, /* ena, SOC0/0, ??? */
	{PRCM_ACLK_MGT_REG, 0x0125, "ACLK"},	/* ena, SOC0/5, 160 MHz */
	{PRCM_SVAMMDSPCLK_MGT_REG, 0x1122, "SVA"}, /* ena, SOC0/2, 400 MHz */
	{PRCM_SIAMMDSPCLK_MGT_REG, 0x0022, "SIA"}, /* dis, SOC0/2, 400 MHz */
	{PRCM_SAAMMDSPCLK_MGT_REG, 0x0822, "SAA"}, /* dis, SOC0/4, 200 MHz */
	{PRCM_SGACLK_MGT_REG, 0x0024, "SGA"},	/* dis, SOC0/4, 200 MHz */
	{PRCM_UARTCLK_MGT_REG, 0x0300, "UART"},	/* ena, GATED, CLK38 */
	{PRCM_MSPCLK_MGT_REG, 0x0200, "MSP"},	/* dis, GATED, CLK38 */
	{PRCM_I2CCLK_MGT_REG, 0x0130, "I2C"},	/* ena, SOC0/16, 50 MHz */
	{PRCM_SDMMCCLK_MGT_REG, 0x0130, "SDMMC"}, /* ena, SOC0/16, 50 MHz */
	{PRCM_PER1CLK_MGT_REG, 0x126, "PER1"},	/* ena, SOC0/6, 133 MHz */
	{PRCM_PER2CLK_MGT_REG, 0x126, "PER2"},	/* ena, SOC0/6, 133 MHz */
	{PRCM_PER3CLK_MGT_REG, 0x126, "PER3"},	/* ena, SOC0/6, 133 MHz */
	{PRCM_PER5CLK_MGT_REG, 0x126, "PER5"},	/* ena, SOC0/6, 133 MHz */
	{PRCM_PER6CLK_MGT_REG, 0x126, "PER6"},	/* ena, SOC0/6, 133 MHz */
	{PRCM_PER7CLK_MGT_REG, 0x128, "PER7"},	/* ena, SOC0/8, 100 MHz */
	{PRCM_DMACLK_MGT_REG, 0x125, "DMA"},	/* ena, SOC0/5, 160 MHz */
	{PRCM_B2R2CLK_MGT_REG, 0x025, "B2R2"},	/* dis, SOC0/5, 160 MHz */
	{0, 0, NULL},
};

static void init_regs(void);

DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_SHOW_BOOT_PROGRESS)
void show_boot_progress(int progress)
{
	printf("Boot reached stage %d\n", progress);
}
#endif

/*
 * Miscellaneous platform dependent initialisations
 */

int board_early_init_f(void)
{
	init_regs();
	return 0;
}

int board_init(void)
{
	uint32_t unused_cols_rows;
	unsigned int nrows;
	unsigned int ncols;

	gd->bd->bi_arch_number = 0x1A4;
	gd->bd->bi_boot_params = 0x00000100;
	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;

	/*
	 * Assumption: 2 CS active, both CS have same layout.
	 *             15 rows max, 11 cols max (controller spec).
	 *             memory chip has 8 banks, I/O width 32 bit.
	 * The correct way would be to read MR#8: I/O width and density,
	 * but this requires locking against the PRCMU firmware.
	 * Simplified approach:
	 * Read number of unused rows and columns from mem controller.
	 * size = nCS x 2^(rows+cols) x nbanks x buswidth_bytes
	 */
	unused_cols_rows = readl(DMC_CTL_97);
	nrows = 15 - (unused_cols_rows & 0x07);
	ncols = 11 - ((unused_cols_rows & 0x0700) >> 8);
	gd->bd->bi_dram[0].size = 2 * (1 << (nrows + ncols)) * 8 * 4;

	icache_enable();

	return 0;
}

int dram_init(void)
{
	gd->ram_size = PHYS_SDRAM_SIZE_1;

	return 0;
}

unsigned int addr_vall_arr[] = {
	0x8011F000, 0x0000FFFF, /* Clocks for HSI TODO: Enable reqd only */
	0x8011F008, 0x00001CFF, /* Clocks for HSI TODO: Enable reqd only */
	0x8000F000, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */
	0x8000F008, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */
	0x80157020, 0x00000150, /* I2C 48MHz clock */
	0x8012F000, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */
	0x8012F008, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */
	0xA03DF000, 0x0000000D, /* Clock for MTU Timers */
	0x8011E00C, 0x00000000, /* GPIO ALT FUNC for EMMC */
	0x8011E004, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */
	0x8011E020, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */
	0x8011E024, 0x00000000, /* GPIO ALT FUNC for EMMC */
	0x8012E000, 0x20000000, /* GPIO ALT FUNC for UART */
	0x8012E00C, 0x00000000, /* GPIO ALT FUNC for SD */
	0x8012E004, 0x0FFC0000, /* GPIO ALT FUNC for SD */
	0x8012E020, 0x60000000, /* GPIO ALT FUNC for SD */
	0x8012E024, 0x60000000, /* GPIO ALT FUNC for SD */
	0x801571E4, 0x0000000C, /* PRCMU settings for B2R2,
				   PRCM_APE_RESETN_SET_REG */
	0x80157024, 0x00000130, /* PRCMU settings for EMMC/SD */
	0xA03FF000, 0x00000003, /* USB */
	0xA03FF008, 0x00000001, /* USB */
	0xA03FE00C, 0x00000000, /* USB */
	0xA03FE020, 0x00000FFF, /* USB */
	0xA03FE024, 0x00000000	/* USB */
};

#ifdef CONFIG_BOARD_LATE_INIT
/*
 * called after all initialisation were done, but before the generic
 * mmc_initialize().
 */
int board_late_init(void)
{
	uchar byte;

	/*
	 * Determine and set board_id environment variable
	 * 0: mop500, 1: href500
	 * Above boards have different GPIO expander chips which we can
	 * distinguish by the chip id.
	 *
	 * The board_id environment variable is needed for the Linux bootargs.
	 */
	(void) i2c_set_bus_num(0);
	(void) i2c_read(CONFIG_SYS_I2C_GPIOE_ADDR, 0x80, 1, &byte, 1);
	if (byte == 0x01) {
		board_id = 0;
		setenv("board_id", "0");
	} else {
		board_id = 1;
		setenv("board_id", "1");
	}
#ifdef CONFIG_MMC
	u8500_mmc_power_init();

	/*
	 * config extended GPIO pins for level shifter and
	 * SDMMC_ENABLE
	 */
	if (board_id == 0) {
		/* MOP500 */
		byte = 0x0c;
		(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x89, 1, &byte, 1);
		(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x83, 1, &byte, 1);
	} else {
		/* HREF */
		/* set the direction of GPIO KPY9 and KPY10 */
		byte = 0x06;
		(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC8, 1, &byte, 1);
		/* must be a multibyte access */
		(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC4, 1,
						(uchar []) {0x06, 0x06}, 2);
	}
#endif /* CONFIG_MMC */
	/*
	 * Create a memargs variable which points uses either the memargs256 or
	 * memargs512 environment variable, depending on the memory size.
	 * memargs is used to build the bootargs, memargs256 and memargs512 are
	 * stored in the environment.
	 */
	if (gd->bd->bi_dram[0].size == 0x10000000) {
		setenv("memargs", "setenv bootargs ${bootargs} ${memargs256}");
		setenv("mem", "256M");
	} else {
		setenv("memargs", "setenv bootargs ${bootargs} ${memargs512}");
		setenv("mem", "512M");
	}

	return 0;
}
#endif /* CONFIG_BOARD_LATE_INIT */

static void early_gpio_setup(struct gpio_register *gpio_reg, u32 bits)
{
	writel(readl(&gpio_reg->gpio_dats) | bits, &gpio_reg->gpio_dats);
	writel(readl(&gpio_reg->gpio_pdis) & ~bits, &gpio_reg->gpio_pdis);
}

static void init_regs(void)
{
	/* FIXME Remove magic register array settings for ED also */
	struct prcmu *prcmu = (struct prcmu *) U8500_PRCMU_BASE;

	/* Enable timers */
	writel(1 << 17, &prcmu->tcr);

	u8500_prcmu_enable(&prcmu->per1clk_mgt);
	u8500_prcmu_enable(&prcmu->per2clk_mgt);
	u8500_prcmu_enable(&prcmu->per3clk_mgt);
	u8500_prcmu_enable(&prcmu->per5clk_mgt);
	u8500_prcmu_enable(&prcmu->per6clk_mgt);
	u8500_prcmu_enable(&prcmu->per7clk_mgt);

	u8500_prcmu_enable(&prcmu->uartclk_mgt);
	u8500_prcmu_enable(&prcmu->i2cclk_mgt);

	u8500_prcmu_enable(&prcmu->sdmmcclk_mgt);

	u8500_clock_enable(1, 9, -1);	/* GPIO0 */

	u8500_clock_enable(2, 11, -1);	/* GPIO1 */

	u8500_clock_enable(3, 8, -1);	/* GPIO2 */
	u8500_clock_enable(5, 1, -1);	/* GPIO3 */

	u8500_clock_enable(3, 6, 6);	/* UART2 */

	gpio_altfuncenable(GPIO_ALT_I2C_0, "I2C0");
	u8500_clock_enable(3, 3, 3);	/* I2C0 */

	early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x60000000);
	gpio_altfuncenable(GPIO_ALT_UART_2, "UART2");

	early_gpio_setup((struct gpio_register *)U8500_GPIO_6_BASE, 0x0000ffe0);
	gpio_altfuncenable(GPIO_ALT_EMMC, "EMMC");

	early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x0000ffe0);
	gpio_altfuncenable(GPIO_ALT_SD_CARD0, "SDCARD");

	u8500_clock_enable(1, 5, 5);	/* SDI0 */
	u8500_clock_enable(2, 4, 2);	/* SDI4 */

	u8500_clock_enable(6, 7, -1);	/* MTU0 */
	u8500_clock_enable(3, 4, 4);	/* SDI2 */

	early_gpio_setup((struct gpio_register *)U8500_GPIO_4_BASE, 0x000007ff);
	gpio_altfuncenable(GPIO_ALT_POP_EMMC, "EMMC");

	/*
	 * Enabling clocks for all devices which are AMBA devices in the
	 * kernel.  Otherwise they will not get probe()'d because the
	 * peripheral ID register will not be powered.
	 */

	/* XXX: some of these differ between ED/V1 */

	u8500_clock_enable(1, 1, 1);	/* UART1 */
	u8500_clock_enable(1, 0, 0);	/* UART0 */

	u8500_clock_enable(3, 2, 2);	/* SSP1 */
	u8500_clock_enable(3, 1, 1);	/* SSP0 */

	u8500_clock_enable(2, 8, -1);	/* SPI0 */
	u8500_clock_enable(2, 5, 3);	/* MSP2 */
}

#ifdef CONFIG_MMC
static int u8500_mmci_board_init(void)
{
	enum gpio_error error;
	struct gpio_register *gpio_base_address;

	gpio_base_address = (void *)(U8500_GPIO_0_BASE);
	gpio_base_address->gpio_dats |= 0xFFC0000;
	gpio_base_address->gpio_pdis &= ~0xFFC0000;

	/* save the GPIO0 AFSELA register */
	error = gpio_altfuncenable(GPIO_ALT_SD_CARD0, "MMC");
	if (error != GPIO_OK) {
		printf("u8500_mmci_board_init() gpio_altfuncenable failed\n");
		return -ENODEV;
	}
	return 0;
}

int board_mmc_init(bd_t *bd)
{
	struct pl180_mmc_host *host;

	if (u8500_mmci_board_init())
		return -ENODEV;

	host = malloc(sizeof(struct pl180_mmc_host));
	if (!host)
		return -ENOMEM;
	memset(host, 0, sizeof(*host));

	strcpy(host->name, "MMC");
	host->base = (struct sdi_registers *)CONFIG_ARM_PL180_MMCI_BASE;
	host->pwr_init = INIT_PWR;
	host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V1 | SDI_CLKCR_CLKEN;
	host->voltages = VOLTAGE_WINDOW_MMC;
	host->caps = 0;
	host->clock_in = ARM_MCLK;
	host->clock_min = ARM_MCLK / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1));
	host->clock_max = CONFIG_ARM_PL180_MMCI_CLOCK_FREQ;

	return arm_pl180_mmci_init(host);
}
#endif


/*
 * get_pll_freq_khz - return PLL frequency in kHz
 */
static uint32_t get_pll_freq_khz(uint32_t inclk_khz, uint32_t freq_reg)
{
	uint32_t idf, ldf, odf, seldiv, phi;

	/*
	 * PLLOUTCLK = PHI = (INCLK*LDF)/(2*ODF*IDF) if SELDIV2=0
	 * PLLOUTCLK = PHI = (INCLK*LDF)/(4*ODF*IDF) if SELDIV2=1
	 * where:
	 * IDF=R(2:0) (when R=000, IDF=1d)
	 * LDF = 2*D(7:0) (D must be greater than or equal to 6)
	 * ODF = N(5:0) (when N=000000, 0DF=1d)
	 */

	idf = (freq_reg & 0x70000) >> 16;
	ldf = (freq_reg & 0xff) * 2;
	odf = (freq_reg & 0x3f00) >> 8;
	seldiv = (freq_reg & 0x01000000) >> 24;
	phi = (inclk_khz * ldf) / (2 * odf * idf);
	if (seldiv)
		phi = phi/2;

	return phi;
}

int do_clkinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	uint32_t inclk_khz;
	uint32_t reg, phi;
	uint32_t clk_khz;
	unsigned int clk_sel;
	struct clk_mgt_regs *clks = clk_mgt_regs;
	struct pll_freq_regs *plls = pll_freq_regs;

	/*
	 * Go through list of PLLs.
	 * Initialise pll out frequency array (pll_khz) and print frequency.
	 */
	inclk_khz = 38400;	/* 38.4 MHz */
	while (plls->addr) {
		reg = readl(plls->addr);
		phi = get_pll_freq_khz(inclk_khz, reg);
		pll_khz[plls->idx] = phi;
		printf("%s PLL out frequency: %d.%d Mhz\n",
				pll_name[plls->idx], phi/1000, phi % 1000);
		plls++;
	}

	/* check ARM clock source */
	reg = readl(PRCM_ARM_CHGCLKREQ_REG);
	printf("A9 running on %s\n",
		(reg & 1) ?  "external clock" : "ARM PLL");

	/* go through list of clk_mgt_reg */
	printf("\n%19s %9s %7s %9s enabled\n",
			"name(addr)", "value", "PLL", "CLK[MHz]");
	while (clks->addr) {
		reg = readl(clks->addr);

		/* convert bit position into array index */
		clk_sel = ffs((reg >> 5) & 0x7);	/* PLLSW[2:0] */

		if (reg & 0x200)
			clk_khz = 38400;	/* CLK38 is set */
		else if ((reg & 0x1f) == 0)
			/* ARMCLKFIX_MGT is 0x120, e.g. div = 0 ! */
			clk_khz = 0;
		else
			clk_khz = pll_khz[clk_sel] / (reg & 0x1f);

		printf("%9s(%08x): %08x, %6s, %4d.%03d, %s\n",
			clks->descr, clks->addr, reg, pll_name[clk_sel],
			clk_khz / 1000, clk_khz % 1000,
			(reg & 0x100) ? "ena" : "dis");
		clks++;
	}

	return 0;
}

U_BOOT_CMD(
	clkinfo,	1,	1,	do_clkinfo,
	"print clock info",
	""
);
Commit	Line	Data
afbf8899 JR	1	/*
	2	* Copyright (C) ST-Ericsson SA 2009
	3	*
1a459660	4	* SPDX-License-Identifier: GPL-2.0+
afbf8899 JR	5	*/
	6
	7	#include <config.h>
	8	#include <common.h>
10ed93dc	9	#include <malloc.h>
afbf8899 JR	10	#include <i2c.h>
	11	#include <asm/types.h>
	12	#include <asm/io.h>
	13	#include <asm/errno.h>
	14	#include <asm/arch/clock.h>
	15	#include <asm/arch/gpio.h>
	16	#include <asm/arch/hardware.h>
	17	#include <asm/arch/sys_proto.h>
42cb8fb6	18	#include <asm/arch/prcmu.h>
9652de7c	19	#ifdef CONFIG_MMC
afbf8899 JR	20	#include "../../../drivers/mmc/arm_pl180_mmci.h"
	21	#endif
	22
	23	#define NOMADIK_PER4_BASE (0x80150000)
	24	#define NOMADIK_BACKUPRAM0_BASE (NOMADIK_PER4_BASE + 0x00000)
	25	#define NOMADIK_BACKUPRAM1_BASE (NOMADIK_PER4_BASE + 0x01000)
	26
	27	/* Power, Reset, Clock Management Unit */
	28	/*
	29	* SVA: Smart Video Accelerator
	30	* SIA: Smart Imaging Accelerator
	31	* SGA: Smart Graphic accelerator
	32	* B2R2: Graphic blitter
	33	*/
afbf8899 JR	34	#define PRCM_ARMCLKFIX_MGT_REG (PRCMU_BASE + 0x000)
	35	#define PRCM_ACLK_MGT_REG (PRCMU_BASE + 0x004)
	36	#define PRCM_SVAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x008)
	37	#define PRCM_SIAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x00C)
	38	#define PRCM_SAAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x010)
	39	#define PRCM_SGACLK_MGT_REG (PRCMU_BASE + 0x014)
	40	#define PRCM_UARTCLK_MGT_REG (PRCMU_BASE + 0x018)
	41	#define PRCM_MSPCLK_MGT_REG (PRCMU_BASE + 0x01C)
	42	#define PRCM_I2CCLK_MGT_REG (PRCMU_BASE + 0x020)
	43	#define PRCM_SDMMCCLK_MGT_REG (PRCMU_BASE + 0x024)
	44	#define PRCM_SLIMCLK_MGT_REG (PRCMU_BASE + 0x028)
	45	#define PRCM_PER1CLK_MGT_REG (PRCMU_BASE + 0x02C)
	46	#define PRCM_PER2CLK_MGT_REG (PRCMU_BASE + 0x030)
	47	#define PRCM_PER3CLK_MGT_REG (PRCMU_BASE + 0x034)
	48	#define PRCM_PER5CLK_MGT_REG (PRCMU_BASE + 0x038)
	49	#define PRCM_PER6CLK_MGT_REG (PRCMU_BASE + 0x03C)
	50	#define PRCM_PER7CLK_MGT_REG (PRCMU_BASE + 0x040)
	51	#define PRCM_DMACLK_MGT_REG (PRCMU_BASE + 0x074)
	52	#define PRCM_B2R2CLK_MGT_REG (PRCMU_BASE + 0x078)
	53
	54	#define PRCM_PLLSOC0_FREQ_REG (PRCMU_BASE + 0x080)
	55	#define PRCM_PLLSOC1_FREQ_REG (PRCMU_BASE + 0x084)
	56	#define PRCM_PLLARM_FREQ_REG (PRCMU_BASE + 0x088)
	57	#define PRCM_PLLDDR_FREQ_REG (PRCMU_BASE + 0x08C)
	58	#define PRCM_ARM_CHGCLKREQ_REG (PRCMU_BASE + 0x114)
	59
	60	#define PRCM_TCR (PRCMU_BASE + 0x1C8)
	61
	62	/*
	63	* Memory controller register
	64	*/
	65	#define DMC_BASE_ADDR 0x80156000
	66	#define DMC_CTL_97 (DMC_BASE_ADDR + 0x184)
	67
	68	int board_id; /* set in board_late_init() */
	69
	70	/* PLLs for clock management registers */
	71	enum {
	72	GATED = 0,
	73	PLLSOC0, /* pllsw = 001, ffs() = 1 */
	74	PLLSOC1, /* pllsw = 010, ffs() = 2 */
	75	PLLDDR, /* pllsw = 100, ffs() = 3 */
	76	PLLARM,
	77	};
	78
	79	static struct pll_freq_regs {
	80	int idx; /* index fror pll_name and pll_khz arrays */
	81	uint32_t addr;
	82	} pll_freq_regs[] = {
	83	{PLLSOC0, PRCM_PLLSOC0_FREQ_REG},
	84	{PLLSOC1, PRCM_PLLSOC1_FREQ_REG},
	85	{PLLDDR, PRCM_PLLDDR_FREQ_REG},
	86	{PLLARM, PRCM_PLLARM_FREQ_REG},
	87	{0, 0},
	88	};
	89
	90	static const char *pll_name[5] = {"GATED", "SOC0", "SOC1", "DDR", "ARM"};
	91	static uint32_t pll_khz[5]; /* use ffs(pllsw(reg)) as index for 0..3 */
	92
	93	static struct clk_mgt_regs {
	94	uint32_t addr;
	95	uint32_t val;
	96	const char *descr;
	97	} clk_mgt_regs[] = {
98	/* register content taken from bootrom settings */
99	{PRCM_ARMCLKFIX_MGT_REG, 0x0120, "ARMCLKFIX"}, /* ena, SOC0/0, ??? */
100	{PRCM_ACLK_MGT_REG, 0x0125, "ACLK"}, /* ena, SOC0/5, 160 MHz */
101	{PRCM_SVAMMDSPCLK_MGT_REG, 0x1122, "SVA"}, /* ena, SOC0/2, 400 MHz */
102	{PRCM_SIAMMDSPCLK_MGT_REG, 0x0022, "SIA"}, /* dis, SOC0/2, 400 MHz */
103	{PRCM_SAAMMDSPCLK_MGT_REG, 0x0822, "SAA"}, /* dis, SOC0/4, 200 MHz */
104	{PRCM_SGACLK_MGT_REG, 0x0024, "SGA"}, /* dis, SOC0/4, 200 MHz */
105	{PRCM_UARTCLK_MGT_REG, 0x0300, "UART"}, /* ena, GATED, CLK38 */
106	{PRCM_MSPCLK_MGT_REG, 0x0200, "MSP"}, /* dis, GATED, CLK38 */
107	{PRCM_I2CCLK_MGT_REG, 0x0130, "I2C"}, /* ena, SOC0/16, 50 MHz */
108	{PRCM_SDMMCCLK_MGT_REG, 0x0130, "SDMMC"}, /* ena, SOC0/16, 50 MHz */
109	{PRCM_PER1CLK_MGT_REG, 0x126, "PER1"}, /* ena, SOC0/6, 133 MHz */
110	{PRCM_PER2CLK_MGT_REG, 0x126, "PER2"}, /* ena, SOC0/6, 133 MHz */
111	{PRCM_PER3CLK_MGT_REG, 0x126, "PER3"}, /* ena, SOC0/6, 133 MHz */
112	{PRCM_PER5CLK_MGT_REG, 0x126, "PER5"}, /* ena, SOC0/6, 133 MHz */
113	{PRCM_PER6CLK_MGT_REG, 0x126, "PER6"}, /* ena, SOC0/6, 133 MHz */
114	{PRCM_PER7CLK_MGT_REG, 0x128, "PER7"}, /* ena, SOC0/8, 100 MHz */
115	{PRCM_DMACLK_MGT_REG, 0x125, "DMA"}, /* ena, SOC0/5, 160 MHz */
116	{PRCM_B2R2CLK_MGT_REG, 0x025, "B2R2"}, /* dis, SOC0/5, 160 MHz */
117	{0, 0, NULL},
118	};
119
120	static void init_regs(void);
121
122	DECLARE_GLOBAL_DATA_PTR;
123	#if defined(CONFIG_SHOW_BOOT_PROGRESS)
124	void show_boot_progress(int progress)
125	{
126	printf("Boot reached stage %d\n", progress);
127	}
128	#endif
129
afbf8899 JR	130	/*
	131	* Miscellaneous platform dependent initialisations
	132	*/
	133
	134	int board_early_init_f(void)
	135	{
	136	init_regs();
	137	return 0;
	138	}
	139
	140	int board_init(void)
	141	{
	142	uint32_t unused_cols_rows;
	143	unsigned int nrows;
	144	unsigned int ncols;
	145
	146	gd->bd->bi_arch_number = 0x1A4;
	147	gd->bd->bi_boot_params = 0x00000100;
	148	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
	149
	150	/*
	151	* Assumption: 2 CS active, both CS have same layout.
	152	* 15 rows max, 11 cols max (controller spec).
	153	* memory chip has 8 banks, I/O width 32 bit.
	154	* The correct way would be to read MR#8: I/O width and density,
	155	* but this requires locking against the PRCMU firmware.
	156	* Simplified approach:
	157	* Read number of unused rows and columns from mem controller.
	158	* size = nCS x 2^(rows+cols) x nbanks x buswidth_bytes
	159	*/
	160	unused_cols_rows = readl(DMC_CTL_97);
	161	nrows = 15 - (unused_cols_rows & 0x07);
	162	ncols = 11 - ((unused_cols_rows & 0x0700) >> 8);
	163	gd->bd->bi_dram[0].size = 2 * (1 << (nrows + ncols)) * 8 * 4;
	164
	165	icache_enable();
	166
	167	return 0;
	168	}
	169
	170	int dram_init(void)
	171	{
	172	gd->ram_size = PHYS_SDRAM_SIZE_1;
	173
	174	return 0;
	175	}
	176
	177	unsigned int addr_vall_arr[] = {
	178	0x8011F000, 0x0000FFFF, /* Clocks for HSI TODO: Enable reqd only */
	179	0x8011F008, 0x00001CFF, /* Clocks for HSI TODO: Enable reqd only */
	180	0x8000F000, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */
	181	0x8000F008, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */
	182	0x80157020, 0x00000150, /* I2C 48MHz clock */
	183	0x8012F000, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */
	184	0x8012F008, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */
	185	0xA03DF000, 0x0000000D, /* Clock for MTU Timers */
	186	0x8011E00C, 0x00000000, /* GPIO ALT FUNC for EMMC */
	187	0x8011E004, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */
	188	0x8011E020, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */
	189	0x8011E024, 0x00000000, /* GPIO ALT FUNC for EMMC */
	190	0x8012E000, 0x20000000, /* GPIO ALT FUNC for UART */
	191	0x8012E00C, 0x00000000, /* GPIO ALT FUNC for SD */
	192	0x8012E004, 0x0FFC0000, /* GPIO ALT FUNC for SD */
	193	0x8012E020, 0x60000000, /* GPIO ALT FUNC for SD */
194	0x8012E024, 0x60000000, /* GPIO ALT FUNC for SD */
195	0x801571E4, 0x0000000C, /* PRCMU settings for B2R2,
196	PRCM_APE_RESETN_SET_REG */
197	0x80157024, 0x00000130, /* PRCMU settings for EMMC/SD */
198	0xA03FF000, 0x00000003, /* USB */
199	0xA03FF008, 0x00000001, /* USB */
200	0xA03FE00C, 0x00000000, /* USB */
201	0xA03FE020, 0x00000FFF, /* USB */
202	0xA03FE024, 0x00000000 /* USB */
203	};
204
9660e442	205	#ifdef CONFIG_BOARD_LATE_INIT
afbf8899 JR	206	/*
	207	* called after all initialisation were done, but before the generic
	208	* mmc_initialize().
	209	*/
	210	int board_late_init(void)
	211	{
	212	uchar byte;
	213
	214	/*
	215	* Determine and set board_id environment variable
	216	* 0: mop500, 1: href500
	217	* Above boards have different GPIO expander chips which we can
	218	* distinguish by the chip id.
	219	*
	220	* The board_id environment variable is needed for the Linux bootargs.
	221	*/
	222	(void) i2c_set_bus_num(0);
	223	(void) i2c_read(CONFIG_SYS_I2C_GPIOE_ADDR, 0x80, 1, &byte, 1);
	224	if (byte == 0x01) {
	225	board_id = 0;
	226	setenv("board_id", "0");
	227	} else {
	228	board_id = 1;
	229	setenv("board_id", "1");
	230	}
	231	#ifdef CONFIG_MMC
1e37322e	232	u8500_mmc_power_init();
afbf8899 JR	233
	234	/*
	235	* config extended GPIO pins for level shifter and
	236	* SDMMC_ENABLE
	237	*/
	238	if (board_id == 0) {
	239	/* MOP500 */
	240	byte = 0x0c;
	241	(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x89, 1, &byte, 1);
	242	(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x83, 1, &byte, 1);
	243	} else {
	244	/* HREF */
	245	/* set the direction of GPIO KPY9 and KPY10 */
	246	byte = 0x06;
	247	(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC8, 1, &byte, 1);
	248	/* must be a multibyte access */
	249	(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC4, 1,
	250	(uchar []) {0x06, 0x06}, 2);
	251	}
	252	#endif /* CONFIG_MMC */
	253	/*
	254	* Create a memargs variable which points uses either the memargs256 or
	255	* memargs512 environment variable, depending on the memory size.
	256	* memargs is used to build the bootargs, memargs256 and memargs512 are
	257	* stored in the environment.
	258	*/
	259	if (gd->bd->bi_dram[0].size == 0x10000000) {
	260	setenv("memargs", "setenv bootargs ${bootargs} ${memargs256}");
	261	setenv("mem", "256M");
	262	} else {
	263	setenv("memargs", "setenv bootargs ${bootargs} ${memargs512}");
	264	setenv("mem", "512M");
	265	}
	266
	267	return 0;
	268	}
9660e442	269	#endif /* CONFIG_BOARD_LATE_INIT */
afbf8899 JR	270
	271	static void early_gpio_setup(struct gpio_register *gpio_reg, u32 bits)
	272	{
	273	writel(readl(&gpio_reg->gpio_dats) \| bits, &gpio_reg->gpio_dats);
	274	writel(readl(&gpio_reg->gpio_pdis) & ~bits, &gpio_reg->gpio_pdis);
	275	}
	276
	277	static void init_regs(void)
	278	{
	279	/* FIXME Remove magic register array settings for ED also */
	280	struct prcmu prcmu = (struct prcmu ) U8500_PRCMU_BASE;
	281
	282	/* Enable timers */
	283	writel(1 << 17, &prcmu->tcr);
	284
	285	u8500_prcmu_enable(&prcmu->per1clk_mgt);
	286	u8500_prcmu_enable(&prcmu->per2clk_mgt);
	287	u8500_prcmu_enable(&prcmu->per3clk_mgt);
	288	u8500_prcmu_enable(&prcmu->per5clk_mgt);
	289	u8500_prcmu_enable(&prcmu->per6clk_mgt);
	290	u8500_prcmu_enable(&prcmu->per7clk_mgt);
	291
	292	u8500_prcmu_enable(&prcmu->uartclk_mgt);
	293	u8500_prcmu_enable(&prcmu->i2cclk_mgt);
	294
	295	u8500_prcmu_enable(&prcmu->sdmmcclk_mgt);
	296
	297	u8500_clock_enable(1, 9, -1); /* GPIO0 */
	298
	299	u8500_clock_enable(2, 11, -1); /* GPIO1 */
	300
	301	u8500_clock_enable(3, 8, -1); /* GPIO2 */
	302	u8500_clock_enable(5, 1, -1); /* GPIO3 */
	303
	304	u8500_clock_enable(3, 6, 6); /* UART2 */
	305
	306	gpio_altfuncenable(GPIO_ALT_I2C_0, "I2C0");
	307	u8500_clock_enable(3, 3, 3); /* I2C0 */
	308
	309	early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x60000000);
	310	gpio_altfuncenable(GPIO_ALT_UART_2, "UART2");
	311
	312	early_gpio_setup((struct gpio_register *)U8500_GPIO_6_BASE, 0x0000ffe0);
	313	gpio_altfuncenable(GPIO_ALT_EMMC, "EMMC");
	314
	315	early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x0000ffe0);
	316	gpio_altfuncenable(GPIO_ALT_SD_CARD0, "SDCARD");
	317
	318	u8500_clock_enable(1, 5, 5); /* SDI0 */
	319	u8500_clock_enable(2, 4, 2); /* SDI4 */
	320
	321	u8500_clock_enable(6, 7, -1); /* MTU0 */
	322	u8500_clock_enable(3, 4, 4); /* SDI2 */
	323
	324	early_gpio_setup((struct gpio_register *)U8500_GPIO_4_BASE, 0x000007ff);
	325	gpio_altfuncenable(GPIO_ALT_POP_EMMC, "EMMC");
	326
	327	/*
	328	* Enabling clocks for all devices which are AMBA devices in the
	329	* kernel. Otherwise they will not get probe()'d because the
	330	* peripheral ID register will not be powered.
	331	*/
	332
	333	/* XXX: some of these differ between ED/V1 */
334
335	u8500_clock_enable(1, 1, 1); /* UART1 */
336	u8500_clock_enable(1, 0, 0); /* UART0 */
337
338	u8500_clock_enable(3, 2, 2); /* SSP1 */
339	u8500_clock_enable(3, 1, 1); /* SSP0 */
340
341	u8500_clock_enable(2, 8, -1); /* SPI0 */
342	u8500_clock_enable(2, 5, 3); /* MSP2 */
343	}
344
345	#ifdef CONFIG_MMC
346	static int u8500_mmci_board_init(void)
347	{
348	enum gpio_error error;
349	struct gpio_register *gpio_base_address;
350
351	gpio_base_address = (void *)(U8500_GPIO_0_BASE);
352	gpio_base_address->gpio_dats \|= 0xFFC0000;
353	gpio_base_address->gpio_pdis &= ~0xFFC0000;
354
355	/* save the GPIO0 AFSELA register */
356	error = gpio_altfuncenable(GPIO_ALT_SD_CARD0, "MMC");
357	if (error != GPIO_OK) {
358	printf("u8500_mmci_board_init() gpio_altfuncenable failed\n");
359	return -ENODEV;
360	}
361	return 0;
362	}
363
364	int board_mmc_init(bd_t *bd)
365	{
10ed93dc JR	366	struct pl180_mmc_host *host;
10ed93dc JR	367
afbf8899 JR	368	if (u8500_mmci_board_init())
	369	return -ENODEV;
	370
10ed93dc JR	371	host = malloc(sizeof(struct pl180_mmc_host));
	372	if (!host)
	373	return -ENOMEM;
	374	memset(host, 0, sizeof(*host));
	375
	376	strcpy(host->name, "MMC");
	377	host->base = (struct sdi_registers *)CONFIG_ARM_PL180_MMCI_BASE;
	378	host->pwr_init = INIT_PWR;
	379	host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V1 \| SDI_CLKCR_CLKEN;
	380	host->voltages = VOLTAGE_WINDOW_MMC;
	381	host->caps = 0;
	382	host->clock_in = ARM_MCLK;
	383	host->clock_min = ARM_MCLK / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1));
	384	host->clock_max = CONFIG_ARM_PL180_MMCI_CLOCK_FREQ;
	385
	386	return arm_pl180_mmci_init(host);
afbf8899 JR	387	}
	388	#endif
	389
	390
	391	/*
	392	* get_pll_freq_khz - return PLL frequency in kHz
	393	*/
	394	static uint32_t get_pll_freq_khz(uint32_t inclk_khz, uint32_t freq_reg)
	395	{
	396	uint32_t idf, ldf, odf, seldiv, phi;
	397
	398	/*
	399	* PLLOUTCLK = PHI = (INCLKLDF)/(2ODF*IDF) if SELDIV2=0
	400	* PLLOUTCLK = PHI = (INCLKLDF)/(4ODF*IDF) if SELDIV2=1
	401	* where:
	402	* IDF=R(2:0) (when R=000, IDF=1d)
	403	* LDF = 2*D(7:0) (D must be greater than or equal to 6)
	404	* ODF = N(5:0) (when N=000000, 0DF=1d)
	405	*/
	406
	407	idf = (freq_reg & 0x70000) >> 16;
	408	ldf = (freq_reg & 0xff) * 2;
	409	odf = (freq_reg & 0x3f00) >> 8;
	410	seldiv = (freq_reg & 0x01000000) >> 24;
	411	phi = (inclk_khz * ldf) / (2 * odf * idf);
	412	if (seldiv)
	413	phi = phi/2;
	414
	415	return phi;
	416	}
	417
	418	int do_clkinfo(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	419	{
	420	uint32_t inclk_khz;
	421	uint32_t reg, phi;
	422	uint32_t clk_khz;
	423	unsigned int clk_sel;
	424	struct clk_mgt_regs *clks = clk_mgt_regs;
	425	struct pll_freq_regs *plls = pll_freq_regs;
	426
	427	/*
	428	* Go through list of PLLs.
	429	* Initialise pll out frequency array (pll_khz) and print frequency.
	430	*/
	431	inclk_khz = 38400; /* 38.4 MHz */
	432	while (plls->addr) {
	433	reg = readl(plls->addr);
	434	phi = get_pll_freq_khz(inclk_khz, reg);
	435	pll_khz[plls->idx] = phi;
	436	printf("%s PLL out frequency: %d.%d Mhz\n",
	437	pll_name[plls->idx], phi/1000, phi % 1000);
	438	plls++;
	439	}
	440
	441	/* check ARM clock source */
	442	reg = readl(PRCM_ARM_CHGCLKREQ_REG);
	443	printf("A9 running on %s\n",
	444	(reg & 1) ? "external clock" : "ARM PLL");
	445
	446	/* go through list of clk_mgt_reg */
	447	printf("\n%19s %9s %7s %9s enabled\n",
	448	"name(addr)", "value", "PLL", "CLK[MHz]");
	449	while (clks->addr) {
	450	reg = readl(clks->addr);
451
452	/* convert bit position into array index */
453	clk_sel = ffs((reg >> 5) & 0x7); /* PLLSW[2:0] */
454
455	if (reg & 0x200)
456	clk_khz = 38400; /* CLK38 is set */
457	else if ((reg & 0x1f) == 0)
458	/* ARMCLKFIX_MGT is 0x120, e.g. div = 0 ! */
459	clk_khz = 0;
460	else
461	clk_khz = pll_khz[clk_sel] / (reg & 0x1f);
462
463	printf("%9s(%08x): %08x, %6s, %4d.%03d, %s\n",
464	clks->descr, clks->addr, reg, pll_name[clk_sel],
465	clk_khz / 1000, clk_khz % 1000,
466	(reg & 0x100) ? "ena" : "dis");
467	clks++;
468	}
469
470	return 0;
471	}
472
473	U_BOOT_CMD(
474	clkinfo, 1, 1, do_clkinfo,
475	"print clock info",
476	""
477	);