3 * Sascha Hauer, Pengutronix
5 * (C) Copyright 2009 Freescale Semiconductor, Inc.
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/errno.h>
29 #include <asm/arch/imx-regs.h>
30 #include <asm/arch/clock.h>
31 #include <asm/arch/sys_proto.h>
32 #include <asm/imx-common/boot_mode.h>
33 #include <asm/imx-common/dma.h>
46 struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
47 u32 reg = readl(&anatop->digprog_sololite);
48 u32 type = ((reg >> 16) & 0xff);
50 if (type != MXC_CPU_MX6SL) {
51 reg = readl(&anatop->digprog);
52 type = ((reg >> 16) & 0xff);
53 if (type == MXC_CPU_MX6DL) {
54 struct scu_regs *scu = (struct scu_regs *)SCU_BASE_ADDR;
55 u32 cfg = readl(&scu->config) & 3;
58 type = MXC_CPU_MX6SOLO;
61 reg &= 0xff; /* mx6 silicon revision */
62 return (type << 12) | (reg + 0x10);
65 #ifdef CONFIG_REVISION_TAG
66 u32 __weak get_board_rev(void)
68 u32 cpurev = get_cpu_rev();
69 u32 type = ((cpurev >> 12) & 0xff);
70 if (type == MXC_CPU_MX6SOLO)
71 cpurev = (MXC_CPU_MX6DL) << 12 | (cpurev & 0xFFF);
79 struct aipstz_regs *aips1, *aips2;
81 aips1 = (struct aipstz_regs *)AIPS1_BASE_ADDR;
82 aips2 = (struct aipstz_regs *)AIPS2_BASE_ADDR;
85 * Set all MPROTx to be non-bufferable, trusted for R/W,
86 * not forced to user-mode.
88 writel(0x77777777, &aips1->mprot0);
89 writel(0x77777777, &aips1->mprot1);
90 writel(0x77777777, &aips2->mprot0);
91 writel(0x77777777, &aips2->mprot1);
94 * Set all OPACRx to be non-bufferable, not require
95 * supervisor privilege level for access,allow for
96 * write access and untrusted master access.
98 writel(0x00000000, &aips1->opacr0);
99 writel(0x00000000, &aips1->opacr1);
100 writel(0x00000000, &aips1->opacr2);
101 writel(0x00000000, &aips1->opacr3);
102 writel(0x00000000, &aips1->opacr4);
103 writel(0x00000000, &aips2->opacr0);
104 writel(0x00000000, &aips2->opacr1);
105 writel(0x00000000, &aips2->opacr2);
106 writel(0x00000000, &aips2->opacr3);
107 writel(0x00000000, &aips2->opacr4);
113 * Mask out the REG_CORE[22:18] bits (REG2_TRIG) and set
114 * them to the specified millivolt level.
115 * Possible values are from 0.725V to 1.450V in steps of
118 void set_vddsoc(u32 mv)
120 struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
121 u32 val, reg = readl(&anatop->reg_core);
124 val = 0x00; /* Power gated off */
126 val = 0x1F; /* Power FET switched full on. No regulation */
128 val = (mv - 700) / 25;
131 * Mask out the REG_CORE[22:18] bits (REG2_TRIG)
132 * and set them to the calculated value (0.7V + val * 0.25V)
134 reg = (reg & ~(0x1F << 18)) | (val << 18);
135 writel(reg, &anatop->reg_core);
138 static void imx_set_wdog_powerdown(bool enable)
140 struct wdog_regs *wdog1 = (struct wdog_regs *)WDOG1_BASE_ADDR;
141 struct wdog_regs *wdog2 = (struct wdog_regs *)WDOG2_BASE_ADDR;
143 /* Write to the PDE (Power Down Enable) bit */
144 writew(enable, &wdog1->wmcr);
145 writew(enable, &wdog2->wmcr);
148 int arch_cpu_init(void)
152 set_vddsoc(1200); /* Set VDDSOC to 1.2V */
154 imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */
156 #ifdef CONFIG_APBH_DMA
164 #ifndef CONFIG_SYS_DCACHE_OFF
165 void enable_caches(void)
167 /* Enable D-cache. I-cache is already enabled in start.S */
172 #if defined(CONFIG_FEC_MXC)
173 void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
175 struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
176 struct fuse_bank *bank = &ocotp->bank[4];
177 struct fuse_bank4_regs *fuse =
178 (struct fuse_bank4_regs *)bank->fuse_regs;
180 u32 value = readl(&fuse->mac_addr_high);
181 mac[0] = (value >> 8);
184 value = readl(&fuse->mac_addr_low);
185 mac[2] = value >> 24 ;
186 mac[3] = value >> 16 ;
187 mac[4] = value >> 8 ;
193 void boot_mode_apply(unsigned cfg_val)
196 struct src *psrc = (struct src *)SRC_BASE_ADDR;
197 writel(cfg_val, &psrc->gpr9);
198 reg = readl(&psrc->gpr10);
203 writel(reg, &psrc->gpr10);
206 * cfg_val will be used for
207 * Boot_cfg4[7:0]:Boot_cfg3[7:0]:Boot_cfg2[7:0]:Boot_cfg1[7:0]
208 * After reset, if GPR10[28] is 1, ROM will copy GPR9[25:0]
209 * to SBMR1, which will determine the boot device.
211 const struct boot_mode soc_boot_modes[] = {
212 {"normal", MAKE_CFGVAL(0x00, 0x00, 0x00, 0x00)},
213 /* reserved value should start rom usb */
214 {"usb", MAKE_CFGVAL(0x01, 0x00, 0x00, 0x00)},
215 {"sata", MAKE_CFGVAL(0x20, 0x00, 0x00, 0x00)},
216 {"escpi1:0", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x08)},
217 {"escpi1:1", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x18)},
218 {"escpi1:2", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x28)},
219 {"escpi1:3", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x38)},
220 /* 4 bit bus width */
221 {"esdhc1", MAKE_CFGVAL(0x40, 0x20, 0x00, 0x00)},
222 {"esdhc2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
223 {"esdhc3", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
224 {"esdhc4", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},