[people/ms/u-boot.git] / arch / arm / cpu / armv7 / omap3 / board.c

/*
 *
 * Common board functions for OMAP3 based boards.
 *
 * (C) Copyright 2004-2008
 * Texas Instruments, <www.ti.com>
 *
 * Author :
 *      Sunil Kumar <sunilsaini05@gmail.com>
 *      Shashi Ranjan <shashiranjanmca05@gmail.com>
 *
 * Derived from Beagle Board and 3430 SDP code by
 *      Richard Woodruff <r-woodruff2@ti.com>
 *      Syed Mohammed Khasim <khasim@ti.com>
 *
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */
#include <common.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mem.h>
#include <asm/cache.h>
#include <asm/armv7.h>
#include <asm/arch/gpio.h>
#include <asm/omap_common.h>

/* Declarations */
extern omap3_sysinfo sysinfo;
static void omap3_setup_aux_cr(void);
static void omap3_invalidate_l2_cache_secure(void);

static const struct gpio_bank gpio_bank_34xx[6] = {
	{ (void *)OMAP34XX_GPIO1_BASE, METHOD_GPIO_24XX },
	{ (void *)OMAP34XX_GPIO2_BASE, METHOD_GPIO_24XX },
	{ (void *)OMAP34XX_GPIO3_BASE, METHOD_GPIO_24XX },
	{ (void *)OMAP34XX_GPIO4_BASE, METHOD_GPIO_24XX },
	{ (void *)OMAP34XX_GPIO5_BASE, METHOD_GPIO_24XX },
	{ (void *)OMAP34XX_GPIO6_BASE, METHOD_GPIO_24XX },
};

const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;

#ifdef CONFIG_SPL_BUILD
/*
* We use static variables because global data is not ready yet.
* Initialized data is available in SPL right from the beginning.
* We would not typically need to save these parameters in regular
* U-Boot. This is needed only in SPL at the moment.
*/
u32 omap3_boot_device = BOOT_DEVICE_NAND;

/* auto boot mode detection is not possible for OMAP3 - hard code */
u32 omap_boot_mode(void)
{
	switch (omap_boot_device()) {
	case BOOT_DEVICE_MMC2:
		return MMCSD_MODE_RAW;
	case BOOT_DEVICE_MMC1:
		return MMCSD_MODE_FAT;
		break;
	case BOOT_DEVICE_NAND:
		return NAND_MODE_HW_ECC;
		break;
	default:
		puts("spl: ERROR:  unknown device - can't select boot mode\n");
		hang();
	}
}

u32 omap_boot_device(void)
{
	return omap3_boot_device;
}

#endif /* CONFIG_SPL_BUILD */


/******************************************************************************
 * Routine: delay
 * Description: spinning delay to use before udelay works
 *****************************************************************************/
static inline void delay(unsigned long loops)
{
	__asm__ volatile ("1:\n" "subs %0, %1, #1\n"
			  "bne 1b":"=r" (loops):"0"(loops));
}

/******************************************************************************
 * Routine: secure_unlock
 * Description: Setup security registers for access
 *              (GP Device only)
 *****************************************************************************/
void secure_unlock_mem(void)
{
	struct pm *pm_rt_ape_base = (struct pm *)PM_RT_APE_BASE_ADDR_ARM;
	struct pm *pm_gpmc_base = (struct pm *)PM_GPMC_BASE_ADDR_ARM;
	struct pm *pm_ocm_ram_base = (struct pm *)PM_OCM_RAM_BASE_ADDR_ARM;
	struct pm *pm_iva2_base = (struct pm *)PM_IVA2_BASE_ADDR_ARM;
	struct sms *sms_base = (struct sms *)OMAP34XX_SMS_BASE;

	/* Protection Module Register Target APE (PM_RT) */
	writel(UNLOCK_1, &pm_rt_ape_base->req_info_permission_1);
	writel(UNLOCK_1, &pm_rt_ape_base->read_permission_0);
	writel(UNLOCK_1, &pm_rt_ape_base->wirte_permission_0);
	writel(UNLOCK_2, &pm_rt_ape_base->addr_match_1);

	writel(UNLOCK_3, &pm_gpmc_base->req_info_permission_0);
	writel(UNLOCK_3, &pm_gpmc_base->read_permission_0);
	writel(UNLOCK_3, &pm_gpmc_base->wirte_permission_0);

	writel(UNLOCK_3, &pm_ocm_ram_base->req_info_permission_0);
	writel(UNLOCK_3, &pm_ocm_ram_base->read_permission_0);
	writel(UNLOCK_3, &pm_ocm_ram_base->wirte_permission_0);
	writel(UNLOCK_2, &pm_ocm_ram_base->addr_match_2);

	/* IVA Changes */
	writel(UNLOCK_3, &pm_iva2_base->req_info_permission_0);
	writel(UNLOCK_3, &pm_iva2_base->read_permission_0);
	writel(UNLOCK_3, &pm_iva2_base->wirte_permission_0);

	/* SDRC region 0 public */
	writel(UNLOCK_1, &sms_base->rg_att0);
}

/******************************************************************************
 * Routine: secureworld_exit()
 * Description: If chip is EMU and boot type is external
 *		configure secure registers and exit secure world
 *              general use.
 *****************************************************************************/
void secureworld_exit()
{
	unsigned long i;

	/* configrue non-secure access control register */
	__asm__ __volatile__("mrc p15, 0, %0, c1, c1, 2":"=r"(i));
	/* enabling co-processor CP10 and CP11 accesses in NS world */
	__asm__ __volatile__("orr %0, %0, #0xC00":"=r"(i));
	/*
	 * allow allocation of locked TLBs and L2 lines in NS world
	 * allow use of PLE registers in NS world also
	 */
	__asm__ __volatile__("orr %0, %0, #0x70000":"=r"(i));
	__asm__ __volatile__("mcr p15, 0, %0, c1, c1, 2":"=r"(i));

	/* Enable ASA in ACR register */
	__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
	__asm__ __volatile__("orr %0, %0, #0x10":"=r"(i));
	__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));

	/* Exiting secure world */
	__asm__ __volatile__("mrc p15, 0, %0, c1, c1, 0":"=r"(i));
	__asm__ __volatile__("orr %0, %0, #0x31":"=r"(i));
	__asm__ __volatile__("mcr p15, 0, %0, c1, c1, 0":"=r"(i));
}

/******************************************************************************
 * Routine: try_unlock_sram()
 * Description: If chip is GP/EMU(special) type, unlock the SRAM for
 *              general use.
 *****************************************************************************/
void try_unlock_memory()
{
	int mode;
	int in_sdram = is_running_in_sdram();

	/*
	 * if GP device unlock device SRAM for general use
	 * secure code breaks for Secure/Emulation device - HS/E/T
	 */
	mode = get_device_type();
	if (mode == GP_DEVICE)
		secure_unlock_mem();

	/*
	 * If device is EMU and boot is XIP external booting
	 * Unlock firewalls and disable L2 and put chip
	 * out of secure world
	 *
	 * Assuming memories are unlocked by the demon who put us in SDRAM
	 */
	if ((mode <= EMU_DEVICE) && (get_boot_type() == 0x1F)
	    && (!in_sdram)) {
		secure_unlock_mem();
		secureworld_exit();
	}

	return;
}

/******************************************************************************
 * Routine: s_init
 * Description: Does early system init of muxing and clocks.
 *              - Called path is with SRAM stack.
 *****************************************************************************/
void s_init(void)
{
	int in_sdram = is_running_in_sdram();

	watchdog_init();

	try_unlock_memory();

	/* Errata workarounds */
	omap3_setup_aux_cr();

#ifndef CONFIG_SYS_L2CACHE_OFF
	/* Invalidate L2-cache from secure mode */
	omap3_invalidate_l2_cache_secure();
#endif

	set_muxconf_regs();
	delay(100);

	prcm_init();

	per_clocks_enable();

#ifdef CONFIG_SPL_BUILD
	preloader_console_init();
#endif

	if (!in_sdram)
		mem_init();
}

/******************************************************************************
 * Routine: wait_for_command_complete
 * Description: Wait for posting to finish on watchdog
 *****************************************************************************/
void wait_for_command_complete(struct watchdog *wd_base)
{
	int pending = 1;
	do {
		pending = readl(&wd_base->wwps);
	} while (pending);
}

/******************************************************************************
 * Routine: watchdog_init
 * Description: Shut down watch dogs
 *****************************************************************************/
void watchdog_init(void)
{
	struct watchdog *wd2_base = (struct watchdog *)WD2_BASE;
	struct prcm *prcm_base = (struct prcm *)PRCM_BASE;

	/*
	 * There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is
	 * either taken care of by ROM (HS/EMU) or not accessible (GP).
	 * We need to take care of WD2-MPU or take a PRCM reset. WD3
	 * should not be running and does not generate a PRCM reset.
	 */

	sr32(&prcm_base->fclken_wkup, 5, 1, 1);
	sr32(&prcm_base->iclken_wkup, 5, 1, 1);
	wait_on_value(ST_WDT2, 0x20, &prcm_base->idlest_wkup, 5);

	writel(WD_UNLOCK1, &wd2_base->wspr);
	wait_for_command_complete(wd2_base);
	writel(WD_UNLOCK2, &wd2_base->wspr);
}

/******************************************************************************
 * Dummy function to handle errors for EABI incompatibility
 *****************************************************************************/
void abort(void)
{
}

#if defined(CONFIG_NAND_OMAP_GPMC) & !defined(CONFIG_SPL_BUILD)
/******************************************************************************
 * OMAP3 specific command to switch between NAND HW and SW ecc
 *****************************************************************************/
static int do_switch_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
	if (argc != 2)
		goto usage;
	if (strncmp(argv[1], "hw", 2) == 0)
		omap_nand_switch_ecc(1);
	else if (strncmp(argv[1], "sw", 2) == 0)
		omap_nand_switch_ecc(0);
	else
		goto usage;

	return 0;

usage:
	printf ("Usage: nandecc %s\n", cmdtp->usage);
	return 1;
}

U_BOOT_CMD(
	nandecc, 2, 1,	do_switch_ecc,
	"switch OMAP3 NAND ECC calculation algorithm",
	"[hw/sw] - Switch between NAND hardware (hw) or software (sw) ecc algorithm"
);

#endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */

#ifdef CONFIG_DISPLAY_BOARDINFO
/**
 * Print board information
 */
int checkboard (void)
{
	char *mem_s ;

	if (is_mem_sdr())
		mem_s = "mSDR";
	else
		mem_s = "LPDDR";

	printf("%s + %s/%s\n", sysinfo.board_string, mem_s,
			sysinfo.nand_string);

	return 0;
}
#endif	/* CONFIG_DISPLAY_BOARDINFO */

static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
{
	u32 i, num_params = *parameters;
	u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA;

	/*
	 * copy the parameters to an un-cached area to avoid coherency
	 * issues
	 */
	for (i = 0; i < num_params; i++) {
		__raw_writel(*parameters, sram_scratch_space);
		parameters++;
		sram_scratch_space++;
	}

	/* Now make the PPA call */
	do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
}

static void omap3_update_aux_cr_secure(u32 set_bits, u32 clear_bits)
{
	u32 acr;

	/* Read ACR */
	asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
	acr &= ~clear_bits;
	acr |= set_bits;

	if (get_device_type() == GP_DEVICE) {
		omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_WRITE_ACR,
				       acr);
	} else {
		struct emu_hal_params emu_romcode_params;
		emu_romcode_params.num_params = 1;
		emu_romcode_params.param1 = acr;
		omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
				       (u32 *)&emu_romcode_params);
	}
}

static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
{
	u32 acr;

	/* Read ACR */
	asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
	acr &= ~clear_bits;
	acr |= set_bits;

	/* Write ACR - affects non-secure banked bits */
	asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
}

static void omap3_setup_aux_cr(void)
{
	/* Workaround for Cortex-A8 errata: #454179 #430973
	 *	Set "IBE" bit
	 *	Set "Disable Brach Size Mispredicts" bit
	 * Workaround for erratum #621766
	 *	Enable L1NEON bit
	 * ACR |= (IBE | DBSM | L1NEON) => ACR |= 0xE0
	 */
	omap3_update_aux_cr_secure(0xE0, 0);
}

#ifndef CONFIG_SYS_L2CACHE_OFF
/* Invalidate the entire L2 cache from secure mode */
static void omap3_invalidate_l2_cache_secure(void)
{
	if (get_device_type() == GP_DEVICE) {
		omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_L2_INVAL,
				      0);
	} else {
		struct emu_hal_params emu_romcode_params;
		emu_romcode_params.num_params = 1;
		emu_romcode_params.param1 = 0;
		omap3_emu_romcode_call(OMAP3_EMU_HAL_API_L2_INVAL,
				       (u32 *)&emu_romcode_params);
	}
}

void v7_outer_cache_enable(void)
{
	/* Set L2EN */
	omap3_update_aux_cr_secure(0x2, 0);

	/*
	 * On some revisions L2EN bit is banked on some revisions it's not
	 * No harm in setting both banked bits(in fact this is required
	 * by an erratum)
	 */
	omap3_update_aux_cr(0x2, 0);
}

void v7_outer_cache_disable(void)
{
	/* Clear L2EN */
	omap3_update_aux_cr_secure(0, 0x2);

	/*
	 * On some revisions L2EN bit is banked on some revisions it's not
	 * No harm in clearing both banked bits(in fact this is required
	 * by an erratum)
	 */
	omap3_update_aux_cr(0, 0x2);
}
#endif

#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
	/* Enable D-cache. I-cache is already enabled in start.S */
	dcache_enable();
}
#endif
Commit	Line	Data
91eee546 DB	1	/*
	2	*
	3	* Common board functions for OMAP3 based boards.
	4	*
	5	* (C) Copyright 2004-2008
	6	* Texas Instruments, <www.ti.com>
	7	*
	8	* Author :
	9	* Sunil Kumar <sunilsaini05@gmail.com>
	10	* Shashi Ranjan <shashiranjanmca05@gmail.com>
	11	*
	12	* Derived from Beagle Board and 3430 SDP code by
	13	* Richard Woodruff <r-woodruff2@ti.com>
	14	* Syed Mohammed Khasim <khasim@ti.com>
	15	*
	16	*
	17	* See file CREDITS for list of people who contributed to this
	18	* project.
	19	*
	20	* This program is free software; you can redistribute it and/or
	21	* modify it under the terms of the GNU General Public License as
	22	* published by the Free Software Foundation; either version 2 of
	23	* the License, or (at your option) any later version.
	24	*
	25	* This program is distributed in the hope that it will be useful,
	26	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	27	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	28	* GNU General Public License for more details.
	29	*
	30	* You should have received a copy of the GNU General Public License
	31	* along with this program; if not, write to the Free Software
	32	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	33	* MA 02111-1307 USA
	34	*/
	35	#include <common.h>
	36	#include <asm/io.h>
	37	#include <asm/arch/sys_proto.h>
	38	#include <asm/arch/mem.h>
06e758e7	39	#include <asm/cache.h>
45bf0585	40	#include <asm/armv7.h>
080a46ea	41	#include <asm/arch/gpio.h>
bb085b87	42	#include <asm/omap_common.h>
91eee546	43
45bf0585	44	/* Declarations */
91eee546	45	extern omap3_sysinfo sysinfo;
45bf0585 A	46	static void omap3_setup_aux_cr(void);
45bf0585 A	47	static void omap3_invalidate_l2_cache_secure(void);
91eee546	48
25223a68 A	49	static const struct gpio_bank gpio_bank_34xx[6] = {
	50	{ (void *)OMAP34XX_GPIO1_BASE, METHOD_GPIO_24XX },
	51	{ (void *)OMAP34XX_GPIO2_BASE, METHOD_GPIO_24XX },
	52	{ (void *)OMAP34XX_GPIO3_BASE, METHOD_GPIO_24XX },
	53	{ (void *)OMAP34XX_GPIO4_BASE, METHOD_GPIO_24XX },
	54	{ (void *)OMAP34XX_GPIO5_BASE, METHOD_GPIO_24XX },
	55	{ (void *)OMAP34XX_GPIO6_BASE, METHOD_GPIO_24XX },
	56	};
	57
	58	const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;
	59
bb085b87 SS	60	#ifdef CONFIG_SPL_BUILD
	61	/*
	62	* We use static variables because global data is not ready yet.
	63	* Initialized data is available in SPL right from the beginning.
	64	* We would not typically need to save these parameters in regular
	65	* U-Boot. This is needed only in SPL at the moment.
	66	*/
	67	u32 omap3_boot_device = BOOT_DEVICE_NAND;
	68
	69	/* auto boot mode detection is not possible for OMAP3 - hard code */
	70	u32 omap_boot_mode(void)
	71	{
	72	switch (omap_boot_device()) {
	73	case BOOT_DEVICE_MMC2:
	74	return MMCSD_MODE_RAW;
	75	case BOOT_DEVICE_MMC1:
	76	return MMCSD_MODE_FAT;
	77	break;
	78	case BOOT_DEVICE_NAND:
	79	return NAND_MODE_HW_ECC;
	80	break;
	81	default:
	82	puts("spl: ERROR: unknown device - can't select boot mode\n");
	83	hang();
	84	}
	85	}
	86
	87	u32 omap_boot_device(void)
	88	{
	89	return omap3_boot_device;
	90	}
	91
	92	#endif /* CONFIG_SPL_BUILD */
	93
	94
91eee546 DB	95	/******************************************************************************
	96	* Routine: delay
	97	* Description: spinning delay to use before udelay works
	98	*****************************************************************************/
	99	static inline void delay(unsigned long loops)
	100	{
	101	__asm__ volatile ("1:\n" "subs %0, %1, #1\n"
	102	"bne 1b":"=r" (loops):"0"(loops));
	103	}
	104
	105	/******************************************************************************
	106	* Routine: secure_unlock
	107	* Description: Setup security registers for access
	108	* (GP Device only)
	109	*****************************************************************************/
	110	void secure_unlock_mem(void)
	111	{
97a099ea DB	112	struct pm pm_rt_ape_base = (struct pm )PM_RT_APE_BASE_ADDR_ARM;
	113	struct pm pm_gpmc_base = (struct pm )PM_GPMC_BASE_ADDR_ARM;
	114	struct pm pm_ocm_ram_base = (struct pm )PM_OCM_RAM_BASE_ADDR_ARM;
	115	struct pm pm_iva2_base = (struct pm )PM_IVA2_BASE_ADDR_ARM;
	116	struct sms sms_base = (struct sms )OMAP34XX_SMS_BASE;
91eee546 DB	117
	118	/* Protection Module Register Target APE (PM_RT) */
	119	writel(UNLOCK_1, &pm_rt_ape_base->req_info_permission_1);
	120	writel(UNLOCK_1, &pm_rt_ape_base->read_permission_0);
	121	writel(UNLOCK_1, &pm_rt_ape_base->wirte_permission_0);
	122	writel(UNLOCK_2, &pm_rt_ape_base->addr_match_1);
	123
	124	writel(UNLOCK_3, &pm_gpmc_base->req_info_permission_0);
	125	writel(UNLOCK_3, &pm_gpmc_base->read_permission_0);
	126	writel(UNLOCK_3, &pm_gpmc_base->wirte_permission_0);
	127
	128	writel(UNLOCK_3, &pm_ocm_ram_base->req_info_permission_0);
	129	writel(UNLOCK_3, &pm_ocm_ram_base->read_permission_0);
	130	writel(UNLOCK_3, &pm_ocm_ram_base->wirte_permission_0);
	131	writel(UNLOCK_2, &pm_ocm_ram_base->addr_match_2);
	132
	133	/* IVA Changes */
	134	writel(UNLOCK_3, &pm_iva2_base->req_info_permission_0);
	135	writel(UNLOCK_3, &pm_iva2_base->read_permission_0);
	136	writel(UNLOCK_3, &pm_iva2_base->wirte_permission_0);
	137
	138	/* SDRC region 0 public */
	139	writel(UNLOCK_1, &sms_base->rg_att0);
	140	}
	141
	142	/******************************************************************************
	143	* Routine: secureworld_exit()
	144	* Description: If chip is EMU and boot type is external
	145	* configure secure registers and exit secure world
	146	* general use.
	147	*****************************************************************************/
	148	void secureworld_exit()
	149	{
	150	unsigned long i;
	151
	152	/* configrue non-secure access control register */
	153	__asm__ __volatile__("mrc p15, 0, %0, c1, c1, 2":"=r"(i));
	154	/* enabling co-processor CP10 and CP11 accesses in NS world */
	155	__asm__ __volatile__("orr %0, %0, #0xC00":"=r"(i));
	156	/*
	157	* allow allocation of locked TLBs and L2 lines in NS world
	158	* allow use of PLE registers in NS world also
	159	*/
	160	__asm__ __volatile__("orr %0, %0, #0x70000":"=r"(i));
	161	__asm__ __volatile__("mcr p15, 0, %0, c1, c1, 2":"=r"(i));
	162
	163	/* Enable ASA in ACR register */
	164	__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
	165	__asm__ __volatile__("orr %0, %0, #0x10":"=r"(i));
	166	__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
	167
	168	/* Exiting secure world */
	169	__asm__ __volatile__("mrc p15, 0, %0, c1, c1, 0":"=r"(i));
	170	__asm__ __volatile__("orr %0, %0, #0x31":"=r"(i));
	171	__asm__ __volatile__("mcr p15, 0, %0, c1, c1, 0":"=r"(i));
	172	}
	173
91eee546 DB	174	/******************************************************************************
	175	* Routine: try_unlock_sram()
	176	* Description: If chip is GP/EMU(special) type, unlock the SRAM for
	177	* general use.
	178	*****************************************************************************/
	179	void try_unlock_memory()
	180	{
	181	int mode;
	182	int in_sdram = is_running_in_sdram();
	183
	184	/*
	185	* if GP device unlock device SRAM for general use
	186	* secure code breaks for Secure/Emulation device - HS/E/T
	187	*/
	188	mode = get_device_type();
	189	if (mode == GP_DEVICE)
	190	secure_unlock_mem();
	191
	192	/*
	193	* If device is EMU and boot is XIP external booting
	194	* Unlock firewalls and disable L2 and put chip
	195	* out of secure world
	196	*
	197	* Assuming memories are unlocked by the demon who put us in SDRAM
	198	*/
	199	if ((mode <= EMU_DEVICE) && (get_boot_type() == 0x1F)
	200	&& (!in_sdram)) {
	201	secure_unlock_mem();
	202	secureworld_exit();
	203	}
	204
	205	return;
	206	}
	207
	208	/******************************************************************************
	209	* Routine: s_init
	210	* Description: Does early system init of muxing and clocks.
	211	* - Called path is with SRAM stack.
	212	*****************************************************************************/
	213	void s_init(void)
	214	{
	215	int in_sdram = is_running_in_sdram();
	216
	217	watchdog_init();
	218
	219	try_unlock_memory();
	220
45bf0585 A	221	/* Errata workarounds */
45bf0585 A	222	omap3_setup_aux_cr();
91eee546	223
45bf0585 A	224	#ifndef CONFIG_SYS_L2CACHE_OFF
	225	/* Invalidate L2-cache from secure mode */
	226	omap3_invalidate_l2_cache_secure();
91eee546	227	#endif
91eee546 DB	228
	229	set_muxconf_regs();
	230	delay(100);
	231
	232	prcm_init();
	233
	234	per_clocks_enable();
	235
bb085b87 SS	236	#ifdef CONFIG_SPL_BUILD
	237	preloader_console_init();
	238	#endif
	239
91eee546	240	if (!in_sdram)
cae377b5	241	mem_init();
91eee546 DB	242	}
	243
	244	/******************************************************************************
	245	* Routine: wait_for_command_complete
	246	* Description: Wait for posting to finish on watchdog
	247	*****************************************************************************/
97a099ea	248	void wait_for_command_complete(struct watchdog *wd_base)
91eee546 DB	249	{
	250	int pending = 1;
	251	do {
	252	pending = readl(&wd_base->wwps);
	253	} while (pending);
	254	}
	255
	256	/******************************************************************************
	257	* Routine: watchdog_init
	258	* Description: Shut down watch dogs
	259	*****************************************************************************/
	260	void watchdog_init(void)
	261	{
97a099ea DB	262	struct watchdog wd2_base = (struct watchdog )WD2_BASE;
97a099ea DB	263	struct prcm prcm_base = (struct prcm )PRCM_BASE;
91eee546 DB	264
	265	/*
	266	* There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is
	267	* either taken care of by ROM (HS/EMU) or not accessible (GP).
	268	* We need to take care of WD2-MPU or take a PRCM reset. WD3
	269	* should not be running and does not generate a PRCM reset.
	270	*/
	271
	272	sr32(&prcm_base->fclken_wkup, 5, 1, 1);
	273	sr32(&prcm_base->iclken_wkup, 5, 1, 1);
	274	wait_on_value(ST_WDT2, 0x20, &prcm_base->idlest_wkup, 5);
	275
	276	writel(WD_UNLOCK1, &wd2_base->wspr);
	277	wait_for_command_complete(wd2_base);
	278	writel(WD_UNLOCK2, &wd2_base->wspr);
	279	}
	280
91eee546 DB	281	/******************************************************************************
	282	* Dummy function to handle errors for EABI incompatibility
	283	*****************************************************************************/
	284	void abort(void)
	285	{
	286	}
	287
bb085b87	288	#if defined(CONFIG_NAND_OMAP_GPMC) & !defined(CONFIG_SPL_BUILD)
91eee546 DB	289	/******************************************************************************
	290	* OMAP3 specific command to switch between NAND HW and SW ecc
	291	*****************************************************************************/
54841ab5	292	static int do_switch_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
91eee546 DB	293	{
	294	if (argc != 2)
	295	goto usage;
	296	if (strncmp(argv[1], "hw", 2) == 0)
	297	omap_nand_switch_ecc(1);
	298	else if (strncmp(argv[1], "sw", 2) == 0)
	299	omap_nand_switch_ecc(0);
	300	else
	301	goto usage;
	302
	303	return 0;
	304
	305	usage:
36003268	306	printf ("Usage: nandecc %s\n", cmdtp->usage);
91eee546 DB	307	return 1;
	308	}
	309
	310	U_BOOT_CMD(
	311	nandecc, 2, 1, do_switch_ecc,
a93c92cd	312	"switch OMAP3 NAND ECC calculation algorithm",
a89c33db WD	313	"[hw/sw] - Switch between NAND hardware (hw) or software (sw) ecc algorithm"
a89c33db WD	314	);
91eee546	315
bb085b87	316	#endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */
6a6b62e3 SP	317
	318	#ifdef CONFIG_DISPLAY_BOARDINFO
	319	/**
	320	* Print board information
	321	*/
	322	int checkboard (void)
	323	{
	324	char *mem_s ;
	325
	326	if (is_mem_sdr())
	327	mem_s = "mSDR";
	328	else
	329	mem_s = "LPDDR";
	330
	331	printf("%s + %s/%s\n", sysinfo.board_string, mem_s,
	332	sysinfo.nand_string);
	333
	334	return 0;
	335	}
	336	#endif /* CONFIG_DISPLAY_BOARDINFO */
45bf0585 A	337
	338	static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
	339	{
	340	u32 i, num_params = *parameters;
	341	u32 sram_scratch_space = (u32 )OMAP3_PUBLIC_SRAM_SCRATCH_AREA;
	342
	343	/*
	344	* copy the parameters to an un-cached area to avoid coherency
	345	* issues
	346	*/
	347	for (i = 0; i < num_params; i++) {
	348	__raw_writel(*parameters, sram_scratch_space);
	349	parameters++;
	350	sram_scratch_space++;
	351	}
	352
	353	/* Now make the PPA call */
	354	do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
	355	}
	356
	357	static void omap3_update_aux_cr_secure(u32 set_bits, u32 clear_bits)
	358	{
	359	u32 acr;
	360
	361	/* Read ACR */
	362	asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
	363	acr &= ~clear_bits;
	364	acr \|= set_bits;
	365
	366	if (get_device_type() == GP_DEVICE) {
	367	omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_WRITE_ACR,
	368	acr);
	369	} else {
	370	struct emu_hal_params emu_romcode_params;
	371	emu_romcode_params.num_params = 1;
	372	emu_romcode_params.param1 = acr;
	373	omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
	374	(u32 *)&emu_romcode_params);
	375	}
	376	}
	377
	378	static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
	379	{
	380	u32 acr;
	381
	382	/* Read ACR */
	383	asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
	384	acr &= ~clear_bits;
	385	acr \|= set_bits;
	386
	387	/* Write ACR - affects non-secure banked bits */
	388	asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
	389	}
	390
	391	static void omap3_setup_aux_cr(void)
	392	{
	393	/* Workaround for Cortex-A8 errata: #454179 #430973
	394	* Set "IBE" bit
	395	* Set "Disable Brach Size Mispredicts" bit
	396	* Workaround for erratum #621766
	397	* Enable L1NEON bit
	398	* ACR \|= (IBE \| DBSM \| L1NEON) => ACR \|= 0xE0
	399	*/
	400	omap3_update_aux_cr_secure(0xE0, 0);
401	}
402
403	#ifndef CONFIG_SYS_L2CACHE_OFF
404	/* Invalidate the entire L2 cache from secure mode */
405	static void omap3_invalidate_l2_cache_secure(void)
406	{
407	if (get_device_type() == GP_DEVICE) {
408	omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_L2_INVAL,
409	0);
410	} else {
411	struct emu_hal_params emu_romcode_params;
412	emu_romcode_params.num_params = 1;
413	emu_romcode_params.param1 = 0;
414	omap3_emu_romcode_call(OMAP3_EMU_HAL_API_L2_INVAL,
415	(u32 *)&emu_romcode_params);
416	}
417	}
418
419	void v7_outer_cache_enable(void)
420	{
421	/* Set L2EN */
422	omap3_update_aux_cr_secure(0x2, 0);
423
424	/*
425	* On some revisions L2EN bit is banked on some revisions it's not
426	* No harm in setting both banked bits(in fact this is required
427	* by an erratum)
428	*/
429	omap3_update_aux_cr(0x2, 0);
430	}
431
432	void v7_outer_cache_disable(void)
433	{
434	/* Clear L2EN */
435	omap3_update_aux_cr_secure(0, 0x2);
436
437	/*
438	* On some revisions L2EN bit is banked on some revisions it's not
439	* No harm in clearing both banked bits(in fact this is required
440	* by an erratum)
441	*/
442	omap3_update_aux_cr(0, 0x2);
443	}
444	#endif
13d4f9bd A	445
	446	#ifndef CONFIG_SYS_DCACHE_OFF
	447	void enable_caches(void)
	448	{
	449	/* Enable D-cache. I-cache is already enabled in start.S */
	450	dcache_enable();
	451	}
	452	#endif