| /* |
| * (C) Copyright 2004-2009 |
| * Texas Instruments, <www.ti.com> |
| * Richard Woodruff <r-woodruff2@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 |
| * version 2 as published by the Free Software Foundation. |
| * |
| * 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 <mach/omap4-mux.h> |
| #include <mach/omap4-silicon.h> |
| #include <mach/omap4-clock.h> |
| #include <mach/syslib.h> |
| #include <asm/barebox-arm.h> |
| |
| void set_muxconf_regs(void); |
| |
| static const struct ddr_regs ddr_regs_400_mhz_2cs = { |
| /* tRRD changed from 10ns to 12.5ns because of the tFAW requirement*/ |
| .tim1 = 0x10eb0662, |
| .tim2 = 0x20370dd2, |
| .tim3 = 0x00b1c33f, |
| .phy_ctrl_1 = 0x849FF408, |
| .ref_ctrl = 0x00000618, |
| .config_init = 0x80000eb9, |
| .config_final = 0x80001ab9, |
| .zq_config = 0xD00b3215, |
| .mr1 = 0x83, |
| .mr2 = 0x4 |
| }; |
| |
| #define I2C_SLAVE 0x12 |
| |
| static int noinline scale_vcores(void) |
| { |
| unsigned int rev = omap4_revision(); |
| |
| /* For VC bypass only VCOREx_CGF_FORCE is necessary and |
| * VCOREx_CFG_VOLTAGE changes can be discarded |
| */ |
| writel(0, OMAP44XX_PRM_VC_CFG_I2C_MODE); |
| writel(0x6026, OMAP44XX_PRM_VC_CFG_I2C_CLK); |
| |
| /* set VCORE1 force VSEL */ |
| omap4_power_i2c_send((0x3A55 << 8) | I2C_SLAVE); |
| |
| /* FIXME: set VCORE2 force VSEL, Check the reset value */ |
| omap4_power_i2c_send((0x295B << 8) | I2C_SLAVE); |
| |
| /* set VCORE3 force VSEL */ |
| switch (rev) { |
| case OMAP4430_ES2_0: |
| omap4_power_i2c_send((0x2961 << 8) | I2C_SLAVE); |
| break; |
| case OMAP4430_ES2_1: |
| omap4_power_i2c_send((0x2A61 << 8) | I2C_SLAVE); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static void noinline panda_init_lowlevel(void) |
| { |
| struct dpll_param core = OMAP4_CORE_DPLL_PARAM_38M4_DDR400; |
| struct dpll_param mpu = OMAP4_MPU_DPLL_PARAM_38M4_MPU600; |
| struct dpll_param iva = OMAP4_IVA_DPLL_PARAM_38M4; |
| struct dpll_param per = OMAP4_PER_DPLL_PARAM_38M4; |
| struct dpll_param abe = OMAP4_ABE_DPLL_PARAM_38M4; |
| struct dpll_param usb = OMAP4_USB_DPLL_PARAM_38M4; |
| |
| writel(CM_SYS_CLKSEL_38M4, CM_SYS_CLKSEL); |
| |
| /* Configure all DPLL's at 100% OPP */ |
| omap4_configure_mpu_dpll(&mpu); |
| omap4_configure_iva_dpll(&iva); |
| omap4_configure_per_dpll(&per); |
| omap4_configure_abe_dpll(&abe); |
| omap4_configure_usb_dpll(&usb); |
| |
| /* Enable all clocks */ |
| omap4_enable_all_clocks(); |
| |
| set_muxconf_regs(); |
| |
| omap4_ddr_init(&ddr_regs_400_mhz_2cs, &core); |
| |
| /* Set VCORE1 = 1.3 V, VCORE2 = VCORE3 = 1.21V */ |
| scale_vcores(); |
| |
| board_init_lowlevel_return(); |
| } |
| |
| void board_init_lowlevel(void) |
| { |
| u32 r; |
| |
| if (get_pc() > 0x80000000) |
| return; |
| |
| r = 0x4030d000; |
| __asm__ __volatile__("mov sp, %0" : : "r"(r)); |
| |
| panda_init_lowlevel(); |
| } |
| |