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u-boot/board/gateworks/gw_ventana/gw_ventana_spl.c
Fabio Estevam 346d106d16 gw_ventana: Remove empty reset_cpu() 
There is really no need to provide an empty reset_cpu() implementation,
so just remove it.

Cc: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Tim Harvey <tharvey@gateworks.com>
2015-11-12 17:26:34 +01:00

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/*
* Copyright (C) 2014 Gateworks Corporation
* Author: Tim Harvey <tharvey@gateworks.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/mx6-ddr.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/imx-common/boot_mode.h>
#include <asm/imx-common/iomux-v3.h>
#include <asm/imx-common/mxc_i2c.h>
#include <environment.h>
#include <spl.h>
#include "gsc.h"
#include "common.h"
DECLARE_GLOBAL_DATA_PTR;
#define RTT_NOM_120OHM /* use 120ohm Rtt_nom vs 60ohm (lower power) */
#define GSC_EEPROM_DDR_SIZE 0x2B /* enum (512,1024,2048) MB */
#define GSC_EEPROM_DDR_WIDTH 0x2D /* enum (32,64) bit */
/* configure MX6Q/DUAL mmdc DDR io registers */
struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
/* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
.dram_sdclk_0 = 0x00020030,
.dram_sdclk_1 = 0x00020030,
.dram_cas = 0x00020030,
.dram_ras = 0x00020030,
.dram_reset = 0x00020030,
/* SDCKE[0:1]: 100k pull-up */
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
/* SDBA2: pull-up disabled */
.dram_sdba2 = 0x00000000,
/* SDODT[0:1]: 100k pull-up, 40 ohm */
.dram_sdodt0 = 0x00003030,
.dram_sdodt1 = 0x00003030,
/* SDQS[0:7]: Differential input, 40 ohm */
.dram_sdqs0 = 0x00000030,
.dram_sdqs1 = 0x00000030,
.dram_sdqs2 = 0x00000030,
.dram_sdqs3 = 0x00000030,
.dram_sdqs4 = 0x00000030,
.dram_sdqs5 = 0x00000030,
.dram_sdqs6 = 0x00000030,
.dram_sdqs7 = 0x00000030,
/* DQM[0:7]: Differential input, 40 ohm */
.dram_dqm0 = 0x00020030,
.dram_dqm1 = 0x00020030,
.dram_dqm2 = 0x00020030,
.dram_dqm3 = 0x00020030,
.dram_dqm4 = 0x00020030,
.dram_dqm5 = 0x00020030,
.dram_dqm6 = 0x00020030,
.dram_dqm7 = 0x00020030,
};
/* configure MX6Q/DUAL mmdc GRP io registers */
struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
/* DDR3 */
.grp_ddr_type = 0x000c0000,
.grp_ddrmode_ctl = 0x00020000,
/* disable DDR pullups */
.grp_ddrpke = 0x00000000,
/* ADDR[00:16], SDBA[0:1]: 40 ohm */
.grp_addds = 0x00000030,
/* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
.grp_ctlds = 0x00000030,
/* DATA[00:63]: Differential input, 40 ohm */
.grp_ddrmode = 0x00020000,
.grp_b0ds = 0x00000030,
.grp_b1ds = 0x00000030,
.grp_b2ds = 0x00000030,
.grp_b3ds = 0x00000030,
.grp_b4ds = 0x00000030,
.grp_b5ds = 0x00000030,
.grp_b6ds = 0x00000030,
.grp_b7ds = 0x00000030,
};
/* configure MX6SOLO/DUALLITE mmdc DDR io registers */
struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
/* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
.dram_sdclk_0 = 0x00020030,
.dram_sdclk_1 = 0x00020030,
.dram_cas = 0x00020030,
.dram_ras = 0x00020030,
.dram_reset = 0x00020030,
/* SDCKE[0:1]: 100k pull-up */
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
/* SDBA2: pull-up disabled */
.dram_sdba2 = 0x00000000,
/* SDODT[0:1]: 100k pull-up, 40 ohm */
.dram_sdodt0 = 0x00003030,
.dram_sdodt1 = 0x00003030,
/* SDQS[0:7]: Differential input, 40 ohm */
.dram_sdqs0 = 0x00000030,
.dram_sdqs1 = 0x00000030,
.dram_sdqs2 = 0x00000030,
.dram_sdqs3 = 0x00000030,
.dram_sdqs4 = 0x00000030,
.dram_sdqs5 = 0x00000030,
.dram_sdqs6 = 0x00000030,
.dram_sdqs7 = 0x00000030,
/* DQM[0:7]: Differential input, 40 ohm */
.dram_dqm0 = 0x00020030,
.dram_dqm1 = 0x00020030,
.dram_dqm2 = 0x00020030,
.dram_dqm3 = 0x00020030,
.dram_dqm4 = 0x00020030,
.dram_dqm5 = 0x00020030,
.dram_dqm6 = 0x00020030,
.dram_dqm7 = 0x00020030,
};
/* configure MX6SOLO/DUALLITE mmdc GRP io registers */
struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
/* DDR3 */
.grp_ddr_type = 0x000c0000,
/* SDQS[0:7]: Differential input, 40 ohm */
.grp_ddrmode_ctl = 0x00020000,
/* disable DDR pullups */
.grp_ddrpke = 0x00000000,
/* ADDR[00:16], SDBA[0:1]: 40 ohm */
.grp_addds = 0x00000030,
/* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
.grp_ctlds = 0x00000030,
/* DATA[00:63]: Differential input, 40 ohm */
.grp_ddrmode = 0x00020000,
.grp_b0ds = 0x00000030,
.grp_b1ds = 0x00000030,
.grp_b2ds = 0x00000030,
.grp_b3ds = 0x00000030,
.grp_b4ds = 0x00000030,
.grp_b5ds = 0x00000030,
.grp_b6ds = 0x00000030,
.grp_b7ds = 0x00000030,
};
/* MT41K64M16JT-125 (1Gb density) */
static struct mx6_ddr3_cfg mt41k64m16jt_125 = {
.mem_speed = 1600,
.density = 1,
.width = 16,
.banks = 8,
.rowaddr = 13,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
/* MT41K128M16JT-125 (2Gb density) */
static struct mx6_ddr3_cfg mt41k128m16jt_125 = {
.mem_speed = 1600,
.density = 2,
.width = 16,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
/* MT41K256M16HA-125 (4Gb density) */
static struct mx6_ddr3_cfg mt41k256m16ha_125 = {
.mem_speed = 1600,
.density = 4,
.width = 16,
.banks = 8,
.rowaddr = 15,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
/*
* calibration - these are the various CPU/DDR3 combinations we support
*/
static struct mx6_mmdc_calibration mx6sdl_64x16_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x004C004E,
.p0_mpwldectrl1 = 0x00440044,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x42440247,
.p0_mpdgctrl1 = 0x02310232,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x45424746,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x33382C31,
};
static struct mx6_mmdc_calibration mx6dq_256x16_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x001B0016,
.p0_mpwldectrl1 = 0x000C000E,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x4324033A,
.p0_mpdgctrl1 = 0x00000000,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x40403438,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x40403D36,
};
static struct mx6_mmdc_calibration mx6sdl_256x16_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x00420043,
.p0_mpwldectrl1 = 0x0016001A,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x4238023B,
.p0_mpdgctrl1 = 0x00000000,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x40404849,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x40402E2F,
};
static struct mx6_mmdc_calibration mx6dq_128x32_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x00190017,
.p0_mpwldectrl1 = 0x00140026,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x43380347,
.p0_mpdgctrl1 = 0x433C034D,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x3C313539,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x36393C39,
};
static struct mx6_mmdc_calibration mx6sdl_128x32_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x003C003C,
.p0_mpwldectrl1 = 0x001F002A,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x42410244,
.p0_mpdgctrl1 = 0x4234023A,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x484A4C4B,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x33342B32,
};
static struct mx6_mmdc_calibration mx6dq_128x64_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x00190017,
.p0_mpwldectrl1 = 0x00140026,
.p1_mpwldectrl0 = 0x0021001C,
.p1_mpwldectrl1 = 0x0011001D,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x43380347,
.p0_mpdgctrl1 = 0x433C034D,
.p1_mpdgctrl0 = 0x032C0324,
.p1_mpdgctrl1 = 0x03310232,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x3C313539,
.p1_mprddlctl = 0x37343141,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x36393C39,
.p1_mpwrdlctl = 0x42344438,
};
static struct mx6_mmdc_calibration mx6sdl_128x64_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x003C003C,
.p0_mpwldectrl1 = 0x001F002A,
.p1_mpwldectrl0 = 0x00330038,
.p1_mpwldectrl1 = 0x0022003F,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x42410244,
.p0_mpdgctrl1 = 0x4234023A,
.p1_mpdgctrl0 = 0x022D022D,
.p1_mpdgctrl1 = 0x021C0228,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x484A4C4B,
.p1_mprddlctl = 0x4B4D4E4B,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x33342B32,
.p1_mpwrdlctl = 0x3933332B,
};
static struct mx6_mmdc_calibration mx6dq_256x32_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x001E001A,
.p0_mpwldectrl1 = 0x0026001F,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x43370349,
.p0_mpdgctrl1 = 0x032D0327,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x3D303639,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x32363934,
};
static struct mx6_mmdc_calibration mx6sdl_256x32_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0X00480047,
.p0_mpwldectrl1 = 0X003D003F,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0X423E0241,
.p0_mpdgctrl1 = 0X022B022C,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0X49454A4A,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0X2E372C32,
};
static struct mx6_mmdc_calibration mx6dq_256x64_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0X00220021,
.p0_mpwldectrl1 = 0X00200030,
.p1_mpwldectrl0 = 0X002D0027,
.p1_mpwldectrl1 = 0X00150026,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x43330342,
.p0_mpdgctrl1 = 0x0339034A,
.p1_mpdgctrl0 = 0x032F0325,
.p1_mpdgctrl1 = 0x032F022E,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0X3A2E3437,
.p1_mprddlctl = 0X35312F3F,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0X33363B37,
.p1_mpwrdlctl = 0X40304239,
};
static void spl_dram_init(int width, int size_mb, int board_model)
{
struct mx6_ddr3_cfg *mem = NULL;
struct mx6_mmdc_calibration *calib = NULL;
struct mx6_ddr_sysinfo sysinfo = {
/* width of data bus:0=16,1=32,2=64 */
.dsize = width/32,
/* config for full 4GB range so that get_mem_size() works */
.cs_density = 32, /* 32Gb per CS */
/* single chip select */
.ncs = 1,
.cs1_mirror = 0,
.rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
#ifdef RTT_NOM_120OHM
.rtt_nom = 2 /*DDR3_RTT_120_OHM*/, /* RTT_Nom = RZQ/2 */
#else
.rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */
#endif
.walat = 1, /* Write additional latency */
.ralat = 5, /* Read additional latency */
.mif3_mode = 3, /* Command prediction working mode */
.bi_on = 1, /* Bank interleaving enabled */
.sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
.pd_fast_exit = 1, /* enable precharge power-down fast exit */
.ddr_type = DDR_TYPE_DDR3,
};
/*
* MMDC Calibration requires the following data:
* mx6_mmdc_calibration - board-specific calibration (routing delays)
* these calibration values depend on board routing, SoC, and DDR
* mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
* mx6_ddr_cfg - chip specific timing/layout details
*/
if (width == 16 && size_mb == 128) {
mem = &mt41k64m16jt_125;
if (is_cpu_type(MXC_CPU_MX6Q))
;
else
calib = &mx6sdl_64x16_mmdc_calib;
debug("1gB density\n");
} else if (width == 16 && size_mb == 256) {
/* 1x 2Gb density chip - same calib as 2x 2Gb */
mem = &mt41k128m16jt_125;
if (is_cpu_type(MXC_CPU_MX6Q))
calib = &mx6dq_128x32_mmdc_calib;
else
calib = &mx6sdl_128x32_mmdc_calib;
debug("2gB density\n");
} else if (width == 16 && size_mb == 512) {
mem = &mt41k256m16ha_125;
if (is_cpu_type(MXC_CPU_MX6Q))
calib = &mx6dq_256x16_mmdc_calib;
else
calib = &mx6sdl_256x16_mmdc_calib;
debug("4gB density\n");
} else if (width == 32 && size_mb == 256) {
/* Same calib as width==16, size==128 */
mem = &mt41k64m16jt_125;
if (is_cpu_type(MXC_CPU_MX6Q))
;
else
calib = &mx6sdl_64x16_mmdc_calib;
debug("1gB density\n");
} else if (width == 32 && size_mb == 512) {
mem = &mt41k128m16jt_125;
if (is_cpu_type(MXC_CPU_MX6Q))
calib = &mx6dq_128x32_mmdc_calib;
else
calib = &mx6sdl_128x32_mmdc_calib;
debug("2gB density\n");
} else if (width == 32 && size_mb == 1024) {
mem = &mt41k256m16ha_125;
if (is_cpu_type(MXC_CPU_MX6Q))
calib = &mx6dq_256x32_mmdc_calib;
else
calib = &mx6sdl_256x32_mmdc_calib;
debug("4gB density\n");
} else if (width == 64 && size_mb == 512) {
mem = &mt41k64m16jt_125;
debug("1gB density\n");
} else if (width == 64 && size_mb == 1024) {
mem = &mt41k128m16jt_125;
if (is_cpu_type(MXC_CPU_MX6Q))
calib = &mx6dq_128x64_mmdc_calib;
else
calib = &mx6sdl_128x64_mmdc_calib;
debug("2gB density\n");
} else if (width == 64 && size_mb == 2048) {
mem = &mt41k256m16ha_125;
if (is_cpu_type(MXC_CPU_MX6Q))
calib = &mx6dq_256x64_mmdc_calib;
debug("4gB density\n");
}
if (!(mem && calib)) {
puts("Error: Invalid Calibration/Board Configuration\n");
printf("MEM : %s\n", mem ? "OKAY" : "NULL");
printf("CALIB : %s\n", calib ? "OKAY" : "NULL");
printf("CPUTYPE: %s\n",
is_cpu_type(MXC_CPU_MX6Q) ? "IMX6Q" : "IMX6DL");
printf("SIZE_MB: %d\n", size_mb);
printf("WIDTH : %d\n", width);
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 clock gating */
ccgr_init();
/* setup AIPS and disable watchdog */
arch_cpu_init();
/* setup AXI */
gpr_init();
/* iomux and setup of i2c */
setup_iomux_uart();
setup_ventana_i2c();
/* 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(CONFIG_I2C_GSC, &ventana_info);
/* configure model-specific gpio */
setup_iomux_gpio(board_model, &ventana_info);
/* provide some some default: 32bit 128MB */
if (GW_UNKNOWN == board_model)
hang();
/* 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);
/* disable boot watchdog */
gsc_boot_wd_disable();
}
/* called from board_init_r after gd setup if CONFIG_SPL_BOARD_INIT defined */
/* its our chance to print info about boot device */
void spl_board_init(void)
{
/* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 */
u32 boot_device = spl_boot_device();
switch (boot_device) {
case BOOT_DEVICE_MMC1:
puts("Booting from MMC\n");
break;
case BOOT_DEVICE_NAND:
puts("Booting from NAND\n");
break;
case BOOT_DEVICE_SATA:
puts("Booting from SATA\n");
break;
default:
puts("Unknown boot device\n");
}
/* PMIC init */
setup_pmic();
}
#ifdef CONFIG_SPL_OS_BOOT
/* return 1 if we wish to boot to uboot vs os (falcon mode) */
int spl_start_uboot(void)
{
int ret = 1;
debug("%s\n", __func__);
#ifdef CONFIG_SPL_ENV_SUPPORT
env_init();
env_relocate_spec();
debug("boot_os=%s\n", getenv("boot_os"));
if (getenv_yesno("boot_os") == 1)
ret = 0;
#endif
debug("%s booting %s\n", __func__, ret ? "uboot" : "linux");
return ret;
}
#endif
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