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/*
* (C) Copyright 2007
* Sascha Hauer, Pengutronix
*
* (C) Copyright 2009 Freescale Semiconductor, Inc.
*
* 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/errno.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/imx-common/boot_mode.h>
#include <stdbool.h>
struct scu_regs {
u32 ctrl;
u32 config;
u32 status;
u32 invalidate;
u32 fpga_rev;
};
u32 get_cpu_rev(void)
{
struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
u32 reg = readl(&anatop->digprog_sololite);
u32 type = ((reg >> 16) & 0xff);
if (type != MXC_CPU_MX6SL) {
reg = readl(&anatop->digprog);
type = ((reg >> 16) & 0xff);
if (type == MXC_CPU_MX6DL) {
struct scu_regs *scu = (struct scu_regs *)SCU_BASE_ADDR;
u32 cfg = readl(&scu->config) & 3;
if (!cfg)
type = MXC_CPU_MX6SOLO;
}
}
reg &= 0xff; /* mx6 silicon revision */
return (type << 12) | (reg + 0x10);
}
void init_aips(void)
{
struct aipstz_regs *aips1, *aips2;
aips1 = (struct aipstz_regs *)AIPS1_BASE_ADDR;
aips2 = (struct aipstz_regs *)AIPS2_BASE_ADDR;
/*
* Set all MPROTx to be non-bufferable, trusted for R/W,
* not forced to user-mode.
*/
writel(0x77777777, &aips1->mprot0);
writel(0x77777777, &aips1->mprot1);
writel(0x77777777, &aips2->mprot0);
writel(0x77777777, &aips2->mprot1);
/*
* Set all OPACRx to be non-bufferable, not require
* supervisor privilege level for access,allow for
* write access and untrusted master access.
*/
writel(0x00000000, &aips1->opacr0);
writel(0x00000000, &aips1->opacr1);
writel(0x00000000, &aips1->opacr2);
writel(0x00000000, &aips1->opacr3);
writel(0x00000000, &aips1->opacr4);
writel(0x00000000, &aips2->opacr0);
writel(0x00000000, &aips2->opacr1);
writel(0x00000000, &aips2->opacr2);
writel(0x00000000, &aips2->opacr3);
writel(0x00000000, &aips2->opacr4);
}
/*
* Set the VDDSOC
*
* Mask out the REG_CORE[22:18] bits (REG2_TRIG) and set
* them to the specified millivolt level.
* Possible values are from 0.725V to 1.450V in steps of
* 0.025V (25mV).
*/
void set_vddsoc(u32 mv)
{
struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
u32 val, reg = readl(&anatop->reg_core);
if (mv < 725)
val = 0x00; /* Power gated off */
else if (mv > 1450)
val = 0x1F; /* Power FET switched full on. No regulation */
else
val = (mv - 700) / 25;
/*
* Mask out the REG_CORE[22:18] bits (REG2_TRIG)
* and set them to the calculated value (0.7V + val * 0.25V)
*/
reg = (reg & ~(0x1F << 18)) | (val << 18);
writel(reg, &anatop->reg_core);
}
static void imx_set_wdog_powerdown(bool enable)
{
struct wdog_regs *wdog1 = (struct wdog_regs *)WDOG1_BASE_ADDR;
struct wdog_regs *wdog2 = (struct wdog_regs *)WDOG2_BASE_ADDR;
/* Write to the PDE (Power Down Enable) bit */
writew(enable, &wdog1->wmcr);
writew(enable, &wdog2->wmcr);
}
int arch_cpu_init(void)
{
init_aips();
set_vddsoc(1200); /* Set VDDSOC to 1.2V */
imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */
return 0;
}
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
}
#endif
#if defined(CONFIG_FEC_MXC)
void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
{
struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
struct fuse_bank *bank = &iim->bank[4];
struct fuse_bank4_regs *fuse =
(struct fuse_bank4_regs *)bank->fuse_regs;
u32 value = readl(&fuse->mac_addr_high);
mac[0] = (value >> 8);
mac[1] = value ;
value = readl(&fuse->mac_addr_low);
mac[2] = value >> 24 ;
mac[3] = value >> 16 ;
mac[4] = value >> 8 ;
mac[5] = value ;
}
#endif
void boot_mode_apply(unsigned cfg_val)
{
unsigned reg;
struct src *psrc = (struct src *)SRC_BASE_ADDR;
writel(cfg_val, &psrc->gpr9);
reg = readl(&psrc->gpr10);
if (cfg_val)
reg |= 1 << 28;
else
reg &= ~(1 << 28);
writel(reg, &psrc->gpr10);
}
/*
* cfg_val will be used for
* Boot_cfg4[7:0]:Boot_cfg3[7:0]:Boot_cfg2[7:0]:Boot_cfg1[7:0]
* After reset, if GPR10[28] is 1, ROM will copy GPR9[25:0]
* to SBMR1, which will determine the boot device.
*/
const struct boot_mode soc_boot_modes[] = {
{"normal", MAKE_CFGVAL(0x00, 0x00, 0x00, 0x00)},
/* reserved value should start rom usb */
{"usb", MAKE_CFGVAL(0x01, 0x00, 0x00, 0x00)},
{"sata", MAKE_CFGVAL(0x20, 0x00, 0x00, 0x00)},
{"escpi1:0", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x08)},
{"escpi1:1", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x18)},
{"escpi1:2", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x28)},
{"escpi1:3", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x38)},
/* 4 bit bus width */
{"esdhc1", MAKE_CFGVAL(0x40, 0x20, 0x00, 0x00)},
{"esdhc2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
{"esdhc3", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
{"esdhc4", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
{NULL, 0},
};
void s_init(void)
{
}
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