486 lines
14 KiB
C
486 lines
14 KiB
C
/*
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* Copyright (C) 2014 Gateworks Corporation
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* Author: Tim Harvey <tharvey@gateworks.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <i2c.h>
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#include <asm/io.h>
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#include <asm/arch/crm_regs.h>
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#include <asm/arch/iomux.h>
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#include <asm/arch/mx6-ddr.h>
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#include <asm/arch/mx6-pins.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/imx-common/boot_mode.h>
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#include <asm/imx-common/iomux-v3.h>
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#include <asm/imx-common/mxc_i2c.h>
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#include <spl.h>
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#include "ventana_eeprom.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define RTT_NOM_120OHM /* use 120ohm Rtt_nom vs 60ohm (lower power) */
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#define I2C_GSC 0
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#define GSC_EEPROM_ADDR 0x51
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#define GSC_EEPROM_DDR_SIZE 0x2B /* enum (512,1024,2048) MB */
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#define GSC_EEPROM_DDR_WIDTH 0x2D /* enum (32,64) bit */
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#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
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PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
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PAD_CTL_ODE | PAD_CTL_SRE_FAST)
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#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
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#define CONFIG_SYS_I2C_SPEED 100000
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/* I2C1: GSC */
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static struct i2c_pads_info mx6q_i2c_pad_info0 = {
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.scl = {
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.i2c_mode = MX6Q_PAD_EIM_D21__I2C1_SCL | PC,
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.gpio_mode = MX6Q_PAD_EIM_D21__GPIO3_IO21 | PC,
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.gp = IMX_GPIO_NR(3, 21)
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},
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.sda = {
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.i2c_mode = MX6Q_PAD_EIM_D28__I2C1_SDA | PC,
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.gpio_mode = MX6Q_PAD_EIM_D28__GPIO3_IO28 | PC,
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.gp = IMX_GPIO_NR(3, 28)
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}
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};
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static struct i2c_pads_info mx6dl_i2c_pad_info0 = {
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.scl = {
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.i2c_mode = MX6DL_PAD_EIM_D21__I2C1_SCL | PC,
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.gpio_mode = MX6DL_PAD_EIM_D21__GPIO3_IO21 | PC,
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.gp = IMX_GPIO_NR(3, 21)
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},
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.sda = {
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.i2c_mode = MX6DL_PAD_EIM_D28__I2C1_SDA | PC,
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.gpio_mode = MX6DL_PAD_EIM_D28__GPIO3_IO28 | PC,
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.gp = IMX_GPIO_NR(3, 28)
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}
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};
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static void i2c_setup_iomux(void)
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{
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if (is_cpu_type(MXC_CPU_MX6Q))
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setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6q_i2c_pad_info0);
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else
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setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6dl_i2c_pad_info0);
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}
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/* configure MX6Q/DUAL mmdc DDR io registers */
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struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
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/* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
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.dram_sdclk_0 = 0x00020030,
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.dram_sdclk_1 = 0x00020030,
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.dram_cas = 0x00020030,
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.dram_ras = 0x00020030,
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.dram_reset = 0x00020030,
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/* SDCKE[0:1]: 100k pull-up */
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.dram_sdcke0 = 0x00003000,
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.dram_sdcke1 = 0x00003000,
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/* SDBA2: pull-up disabled */
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.dram_sdba2 = 0x00000000,
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/* SDODT[0:1]: 100k pull-up, 40 ohm */
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.dram_sdodt0 = 0x00003030,
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.dram_sdodt1 = 0x00003030,
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/* SDQS[0:7]: Differential input, 40 ohm */
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.dram_sdqs0 = 0x00000030,
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.dram_sdqs1 = 0x00000030,
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.dram_sdqs2 = 0x00000030,
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.dram_sdqs3 = 0x00000030,
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.dram_sdqs4 = 0x00000030,
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.dram_sdqs5 = 0x00000030,
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.dram_sdqs6 = 0x00000030,
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.dram_sdqs7 = 0x00000030,
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/* DQM[0:7]: Differential input, 40 ohm */
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.dram_dqm0 = 0x00020030,
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.dram_dqm1 = 0x00020030,
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.dram_dqm2 = 0x00020030,
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.dram_dqm3 = 0x00020030,
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.dram_dqm4 = 0x00020030,
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.dram_dqm5 = 0x00020030,
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.dram_dqm6 = 0x00020030,
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.dram_dqm7 = 0x00020030,
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};
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/* configure MX6Q/DUAL mmdc GRP io registers */
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struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
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/* DDR3 */
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.grp_ddr_type = 0x000c0000,
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.grp_ddrmode_ctl = 0x00020000,
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/* disable DDR pullups */
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.grp_ddrpke = 0x00000000,
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/* ADDR[00:16], SDBA[0:1]: 40 ohm */
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.grp_addds = 0x00000030,
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/* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
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.grp_ctlds = 0x00000030,
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/* DATA[00:63]: Differential input, 40 ohm */
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.grp_ddrmode = 0x00020000,
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.grp_b0ds = 0x00000030,
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.grp_b1ds = 0x00000030,
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.grp_b2ds = 0x00000030,
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.grp_b3ds = 0x00000030,
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.grp_b4ds = 0x00000030,
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.grp_b5ds = 0x00000030,
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.grp_b6ds = 0x00000030,
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.grp_b7ds = 0x00000030,
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};
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/* configure MX6SOLO/DUALLITE mmdc DDR io registers */
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struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
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/* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
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.dram_sdclk_0 = 0x00020030,
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.dram_sdclk_1 = 0x00020030,
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.dram_cas = 0x00020030,
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.dram_ras = 0x00020030,
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.dram_reset = 0x00020030,
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/* SDCKE[0:1]: 100k pull-up */
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.dram_sdcke0 = 0x00003000,
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.dram_sdcke1 = 0x00003000,
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/* SDBA2: pull-up disabled */
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.dram_sdba2 = 0x00000000,
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/* SDODT[0:1]: 100k pull-up, 40 ohm */
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.dram_sdodt0 = 0x00003030,
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.dram_sdodt1 = 0x00003030,
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/* SDQS[0:7]: Differential input, 40 ohm */
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.dram_sdqs0 = 0x00000030,
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.dram_sdqs1 = 0x00000030,
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.dram_sdqs2 = 0x00000030,
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.dram_sdqs3 = 0x00000030,
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.dram_sdqs4 = 0x00000030,
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.dram_sdqs5 = 0x00000030,
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.dram_sdqs6 = 0x00000030,
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.dram_sdqs7 = 0x00000030,
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/* DQM[0:7]: Differential input, 40 ohm */
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.dram_dqm0 = 0x00020030,
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.dram_dqm1 = 0x00020030,
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.dram_dqm2 = 0x00020030,
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.dram_dqm3 = 0x00020030,
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.dram_dqm4 = 0x00020030,
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.dram_dqm5 = 0x00020030,
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.dram_dqm6 = 0x00020030,
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.dram_dqm7 = 0x00020030,
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};
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/* configure MX6SOLO/DUALLITE mmdc GRP io registers */
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struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
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/* DDR3 */
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.grp_ddr_type = 0x000c0000,
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/* SDQS[0:7]: Differential input, 40 ohm */
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.grp_ddrmode_ctl = 0x00020000,
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/* disable DDR pullups */
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.grp_ddrpke = 0x00000000,
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/* ADDR[00:16], SDBA[0:1]: 40 ohm */
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.grp_addds = 0x00000030,
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/* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
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.grp_ctlds = 0x00000030,
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/* DATA[00:63]: Differential input, 40 ohm */
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.grp_ddrmode = 0x00020000,
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.grp_b0ds = 0x00000030,
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.grp_b1ds = 0x00000030,
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.grp_b2ds = 0x00000030,
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.grp_b3ds = 0x00000030,
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.grp_b4ds = 0x00000030,
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.grp_b5ds = 0x00000030,
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.grp_b6ds = 0x00000030,
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.grp_b7ds = 0x00000030,
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};
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/* MT41K128M16JT-125 (2Gb density) */
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static struct mx6_ddr3_cfg mt41k128m16jt_125 = {
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.mem_speed = 1600,
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.density = 2,
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.width = 16,
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.banks = 8,
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.rowaddr = 14,
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.coladdr = 10,
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.pagesz = 2,
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.trcd = 1375,
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.trcmin = 4875,
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.trasmin = 3500,
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};
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/* MT41K256M16HA-125 (4Gb density) */
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static struct mx6_ddr3_cfg mt41k256m16ha_125 = {
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.mem_speed = 1600,
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.density = 4,
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.width = 16,
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.banks = 8,
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.rowaddr = 15,
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.coladdr = 10,
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.pagesz = 2,
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.trcd = 1375,
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.trcmin = 4875,
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.trasmin = 3500,
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};
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/*
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* calibration - these are the various CPU/DDR3 combinations we support
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*/
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static struct mx6_mmdc_calibration mx6dq_128x32_mmdc_calib = {
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/* write leveling calibration determine */
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.p0_mpwldectrl0 = 0x00190017,
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.p0_mpwldectrl1 = 0x00140026,
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/* Read DQS Gating calibration */
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.p0_mpdgctrl0 = 0x43380347,
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.p0_mpdgctrl1 = 0x433C034D,
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/* Read Calibration: DQS delay relative to DQ read access */
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.p0_mprddlctl = 0x3C313539,
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/* Write Calibration: DQ/DM delay relative to DQS write access */
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.p0_mpwrdlctl = 0x36393C39,
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};
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static struct mx6_mmdc_calibration mx6sdl_128x32_mmdc_calib = {
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/* write leveling calibration determine */
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.p0_mpwldectrl0 = 0x003C003C,
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.p0_mpwldectrl1 = 0x001F002A,
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/* Read DQS Gating calibration */
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.p0_mpdgctrl0 = 0x42410244,
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.p0_mpdgctrl1 = 0x4234023A,
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/* Read Calibration: DQS delay relative to DQ read access */
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.p0_mprddlctl = 0x484A4C4B,
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/* Write Calibration: DQ/DM delay relative to DQS write access */
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.p0_mpwrdlctl = 0x33342B32,
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};
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static struct mx6_mmdc_calibration mx6dq_128x64_mmdc_calib = {
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/* write leveling calibration determine */
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.p0_mpwldectrl0 = 0x00190017,
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.p0_mpwldectrl1 = 0x00140026,
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.p1_mpwldectrl0 = 0x0021001C,
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.p1_mpwldectrl1 = 0x0011001D,
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/* Read DQS Gating calibration */
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.p0_mpdgctrl0 = 0x43380347,
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.p0_mpdgctrl1 = 0x433C034D,
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.p1_mpdgctrl0 = 0x032C0324,
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.p1_mpdgctrl1 = 0x03310232,
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/* Read Calibration: DQS delay relative to DQ read access */
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.p0_mprddlctl = 0x3C313539,
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.p1_mprddlctl = 0x37343141,
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/* Write Calibration: DQ/DM delay relative to DQS write access */
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.p0_mpwrdlctl = 0x36393C39,
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.p1_mpwrdlctl = 0x42344438,
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};
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static struct mx6_mmdc_calibration mx6sdl_128x64_mmdc_calib = {
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/* write leveling calibration determine */
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.p0_mpwldectrl0 = 0x003C003C,
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.p0_mpwldectrl1 = 0x001F002A,
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.p1_mpwldectrl0 = 0x00330038,
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.p1_mpwldectrl1 = 0x0022003F,
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/* Read DQS Gating calibration */
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.p0_mpdgctrl0 = 0x42410244,
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.p0_mpdgctrl1 = 0x4234023A,
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.p1_mpdgctrl0 = 0x022D022D,
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.p1_mpdgctrl1 = 0x021C0228,
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/* Read Calibration: DQS delay relative to DQ read access */
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.p0_mprddlctl = 0x484A4C4B,
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.p1_mprddlctl = 0x4B4D4E4B,
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/* Write Calibration: DQ/DM delay relative to DQS write access */
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.p0_mpwrdlctl = 0x33342B32,
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.p1_mpwrdlctl = 0x3933332B,
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};
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static struct mx6_mmdc_calibration mx6dq_256x32_mmdc_calib = {
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/* write leveling calibration determine */
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.p0_mpwldectrl0 = 0x001E001A,
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.p0_mpwldectrl1 = 0x0026001F,
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/* Read DQS Gating calibration */
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.p0_mpdgctrl0 = 0x43370349,
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.p0_mpdgctrl1 = 0x032D0327,
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/* Read Calibration: DQS delay relative to DQ read access */
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.p0_mprddlctl = 0x3D303639,
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/* Write Calibration: DQ/DM delay relative to DQS write access */
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.p0_mpwrdlctl = 0x32363934,
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};
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static struct mx6_mmdc_calibration mx6sdl_256x32_mmdc_calib = {
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/* write leveling calibration determine */
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.p0_mpwldectrl0 = 0X00480047,
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.p0_mpwldectrl1 = 0X003D003F,
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/* Read DQS Gating calibration */
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.p0_mpdgctrl0 = 0X423E0241,
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.p0_mpdgctrl1 = 0X022B022C,
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/* Read Calibration: DQS delay relative to DQ read access */
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.p0_mprddlctl = 0X49454A4A,
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/* Write Calibration: DQ/DM delay relative to DQS write access */
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.p0_mpwrdlctl = 0X2E372C32,
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};
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static struct mx6_mmdc_calibration mx6dq_256x64_mmdc_calib = {
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/* write leveling calibration determine */
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.p0_mpwldectrl0 = 0X00220021,
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.p0_mpwldectrl1 = 0X00200030,
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.p1_mpwldectrl0 = 0X002D0027,
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.p1_mpwldectrl1 = 0X00150026,
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/* Read DQS Gating calibration */
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.p0_mpdgctrl0 = 0x43330342,
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.p0_mpdgctrl1 = 0x0339034A,
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.p1_mpdgctrl0 = 0x032F0325,
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.p1_mpdgctrl1 = 0x032F022E,
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/* Read Calibration: DQS delay relative to DQ read access */
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.p0_mprddlctl = 0X3A2E3437,
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.p1_mprddlctl = 0X35312F3F,
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/* Write Calibration: DQ/DM delay relative to DQS write access */
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.p0_mpwrdlctl = 0X33363B37,
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.p1_mpwrdlctl = 0X40304239,
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};
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static void spl_dram_init(int width, int size_mb, int board_model)
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{
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struct mx6_ddr3_cfg *mem = NULL;
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struct mx6_mmdc_calibration *calib = NULL;
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struct mx6_ddr_sysinfo sysinfo = {
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/* width of data bus:0=16,1=32,2=64 */
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.dsize = width/32,
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/* config for full 4GB range so that get_mem_size() works */
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.cs_density = 32, /* 32Gb per CS */
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/* single chip select */
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.ncs = 1,
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.cs1_mirror = 0,
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.rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
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#ifdef RTT_NOM_120OHM
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.rtt_nom = 2 /*DDR3_RTT_120_OHM*/, /* RTT_Nom = RZQ/2 */
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#else
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.rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */
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#endif
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.walat = 1, /* Write additional latency */
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.ralat = 5, /* Read additional latency */
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.mif3_mode = 3, /* Command prediction working mode */
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.bi_on = 1, /* Bank interleaving enabled */
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.sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
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.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
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.pd_fast_exit = 1, /* enable precharge power-down fast exit */
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};
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/*
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* MMDC Calibration requires the following data:
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* mx6_mmdc_calibration - board-specific calibration (routing delays)
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* these calibration values depend on board routing, SoC, and DDR
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* mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
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* mx6_ddr_cfg - chip specific timing/layout details
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*/
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if (width == 32 && size_mb == 512) {
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mem = &mt41k128m16jt_125;
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if (is_cpu_type(MXC_CPU_MX6Q))
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calib = &mx6dq_128x32_mmdc_calib;
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else
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calib = &mx6sdl_128x32_mmdc_calib;
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debug("2gB density\n");
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} else if (width == 64 && size_mb == 1024) {
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mem = &mt41k128m16jt_125;
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if (is_cpu_type(MXC_CPU_MX6Q))
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calib = &mx6dq_128x64_mmdc_calib;
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else
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calib = &mx6sdl_128x64_mmdc_calib;
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debug("2gB density\n");
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} else if (width == 32 && size_mb == 1024) {
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mem = &mt41k256m16ha_125;
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if (is_cpu_type(MXC_CPU_MX6Q))
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calib = &mx6dq_256x32_mmdc_calib;
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else
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calib = &mx6sdl_256x32_mmdc_calib;
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debug("4gB density\n");
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} else if (width == 64 && size_mb == 2048) {
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mem = &mt41k256m16ha_125;
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if (is_cpu_type(MXC_CPU_MX6Q))
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calib = &mx6dq_256x64_mmdc_calib;
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debug("4gB density\n");
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}
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if (!mem) {
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puts("Error: Invalid Memory Configuration\n");
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hang();
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}
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if (!calib) {
|
|
puts("Error: Invalid Board Calibration Configuration\n");
|
|
hang();
|
|
}
|
|
|
|
if (is_cpu_type(MXC_CPU_MX6Q))
|
|
mx6dq_dram_iocfg(width, &mx6dq_ddr_ioregs,
|
|
&mx6dq_grp_ioregs);
|
|
else
|
|
mx6sdl_dram_iocfg(width, &mx6sdl_ddr_ioregs,
|
|
&mx6sdl_grp_ioregs);
|
|
mx6_dram_cfg(&sysinfo, calib, mem);
|
|
}
|
|
|
|
static void ccgr_init(void)
|
|
{
|
|
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
|
|
|
|
writel(0x00C03F3F, &ccm->CCGR0);
|
|
writel(0x0030FC03, &ccm->CCGR1);
|
|
writel(0x0FFFC000, &ccm->CCGR2);
|
|
writel(0x3FF00000, &ccm->CCGR3);
|
|
writel(0xFFFFF300, &ccm->CCGR4); /* enable NAND/GPMI/BCH clks */
|
|
writel(0x0F0000C3, &ccm->CCGR5);
|
|
writel(0x000003FF, &ccm->CCGR6);
|
|
}
|
|
|
|
static void gpr_init(void)
|
|
{
|
|
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
|
|
|
|
/* enable AXI cache for VDOA/VPU/IPU */
|
|
writel(0xF00000CF, &iomux->gpr[4]);
|
|
/* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
|
|
writel(0x007F007F, &iomux->gpr[6]);
|
|
writel(0x007F007F, &iomux->gpr[7]);
|
|
}
|
|
|
|
/*
|
|
* called from C runtime startup code (arch/arm/lib/crt0.S:_main)
|
|
* - we have a stack and a place to store GD, both in SRAM
|
|
* - no variable global data is available
|
|
*/
|
|
void board_init_f(ulong dummy)
|
|
{
|
|
struct ventana_board_info ventana_info;
|
|
int board_model;
|
|
|
|
/* setup AIPS and disable watchdog */
|
|
arch_cpu_init();
|
|
|
|
ccgr_init();
|
|
gpr_init();
|
|
|
|
/* iomux and setup of i2c */
|
|
board_early_init_f();
|
|
i2c_setup_iomux();
|
|
|
|
/* setup GP timer */
|
|
timer_init();
|
|
|
|
/* UART clocks enabled and gd valid - init serial console */
|
|
preloader_console_init();
|
|
|
|
/* read/validate EEPROM info to determine board model and SDRAM cfg */
|
|
board_model = read_eeprom(I2C_GSC, &ventana_info);
|
|
|
|
/* provide some some default: 32bit 128MB */
|
|
if (GW_UNKNOWN == board_model) {
|
|
ventana_info.sdram_width = 2;
|
|
ventana_info.sdram_size = 3;
|
|
}
|
|
|
|
/* configure MMDC for SDRAM width/size and per-model calibration */
|
|
spl_dram_init(8 << ventana_info.sdram_width,
|
|
16 << ventana_info.sdram_size,
|
|
board_model);
|
|
|
|
/* Clear the BSS. */
|
|
memset(__bss_start, 0, __bss_end - __bss_start);
|
|
|
|
/* load/boot image from boot device */
|
|
board_init_r(NULL, 0);
|
|
}
|
|
|
|
void reset_cpu(ulong addr)
|
|
{
|
|
}
|