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imx: ventana: switch to SPL

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Switch to an SPL image. The SPL for Ventana does the following:
 - setup i2c and read the factory programmed EEPROM to obtain DRAM config
   and model for board-specific calibration data
 - configure DRAM per CPU/size/layout/devices/calibration
 - load u-boot.img from NAND and jump to it

This allows for a single SPL+u-boot.img to replace the previous multiple boa
configurations.

Cc: Stefan Roese <sr@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Andy Ng <andreas2025@gmail.com>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Tapani Utriainen <tapani@technexion.com>
Cc: Tom Rini <trini@ti.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
This commit is contained in:
Tim Harvey 2014-06-02 16:13:27 -07:00 committed by Stefano Babic
parent 680e8db450
commit 0cc11dea89
7 changed files with 499 additions and 57 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
board/gateworks/gw_ventana/Makefile
View file

@ -7,4 +7,5 @@
#
obj-y := gw_ventana.o gsc.o eeprom.o
obj-$(CONFIG_SPL_BUILD) += gw_ventana_spl.o

94
board/gateworks/gw_ventana/README
View file

@ -3,53 +3,81 @@ U-Boot for the Gateworks Ventana Product Family boards
This file contains information for the port of U-Boot to the Gateworks
Ventana Product family boards.
1. Boot source, boot from NAND
1. Secondary Program Loader (SPL)
---------------------------------
The i.MX6 has a BOOT ROM PPL (Primary Program Loader) which supports loading
an executable image from various boot devices.
The Gateworks Ventana board config uses an SPL build configuration. This
will build the following artifacts from u-boot source:
- SPL - Secondary Program Loader that the i.MX6 BOOT ROM (Primary Program
Loader) boots. This detects CPU/DRAM configuration, configures
The DRAM controller, loads u-boot.img from the detected boot device,
and jumps to it. As this is booted from the PPL, it has an IVT/DCD
table.
- u-boot.img - The main u-boot core which is u-boot.bin with a image header.
2. Build
--------
To build U-Boot for the Gateworks Ventana product family:
make gwventana_config
make
3. Boot source, boot from NAND
------------------------------
The i.MX6 BOOT ROM expects some structures that provide details of NAND layout
and bad block information (referred to as 'bootstreams') which are replicated
multiple times in NAND. The number of replications is configurable through
board strapping options and eFUSE settings. The Freescale 'kobs-ng'
application from the Freescale LTIB BSP, which runs under Linux, must be used
to program the bootstream in order to setup the replicated headers correctly.
multiple times in NAND. The number of replications and their spacing (referred
to as search stride) is configurable through board strapping options and/or
eFUSE settings (BOOT_SEARCH_COUNT / Pages in block from BOOT_CFG2). In
addition, the i.MX6 BOOT ROM Flash Configuration Block (FCB) supports two
copies of a bootloader in flash in the case that a bad block has corrupted one.
The Freescale 'kobs-ng' application from the Freescale LTIB BSP, which runs
under Linux and operates on an MTD partition, must be used to program the
bootstream in order to setup this flash structure correctly.
The Gateworks Ventana boards with NAND flash have been factory programmed
such that their eFUSE settings expect 2 copies of the boostream (this is
specified by providing kobs-ng with the --search_exponent=1 argument). Once in
Linux with MTD support for the NAND on /dev/mtd0 you can program the boostream
Linux with MTD support for the NAND on /dev/mtd0 you can program the SPL
with:
kobs-ng init -v -x --search_exponent=1 u-boot.imx
kobs-ng init -v -x --search_exponent=1 SPL
The kobs-ng application uses an imximage (u-boot.imx) which contains the
Image Vector Table (IVT) and Device Configuration Data (DCD) structures that
the i.MX6 BOOT ROM requires to boot. The kobs-ng adds the Firmware
Configuration Block (FCB) and Discovered Bad Block Table (DBBT).
The kobs-ng application uses an imximage which contains the Image Vector Table
(IVT) and Device Configuration Data (DCD) structures that the i.MX6 BOOT ROM
requires to boot. The kobs-ng adds the Firmware Configuration Block (FCB) and
Discovered Bad Block Table (DBBT). The SPL build artifact from u-boot is
an imximage.
The u-boot.img, which is the non SPL u-boot binary appended to a u-boot image
header must be programmed in the NAND flash boot device at an offset hard
coded in the SPL. For the Ventana boards, this has been chosen to be 14MB.
The image can be programmed from either u-boot or Linux:
u-boot:
Ventana > setenv mtdparts mtdparts=nand:14m(spl),2m(uboot),1m(env),-(rootfs)
Ventana > tftp ${loadaddr} u-boot.img && nand erase.part uboot && \
nand write ${loadaddr} uboot ${filesize}
Linux:
nandwrite /dev/mtd1 u-boot.img
The above assumes the default Ventana partitioning scheme which is configured
via the mtdparts env var:
- spl: 14MB
- uboot: 2M
- env: 1M
- rootfs: the rest
This information is taken from:
http://trac.gateworks.com/wiki/ventana/bootloader#NANDFLASH
More details about the i.MX6 BOOT ROM can be found in the IMX6 reference manual.
2. Build
--------
There are several Gateworks Ventana boards that share a simliar design but
vary based on CPU, Memory configuration, and subloaded devices. Although
the subloaded devices are handled dynamically in the bootloader using
factory configured EEPROM data to modify the device-tree, the CPU choice
(IMX6Q vs IMX6DL) and memory configurations are currently compile-time
options.
The following Gateworks Ventana configurations exist:
gwventanaq1gspi: MX6Q,1GB,SPI FLASH
gwventanaq : MX6Q,512MB,NAND FLASH
gwventanaq1g : MX6Q,1GB,NAND FLASH
gwventanadl : MX6DL,512MB,NAND FLASH
gwventanadl1g : MX6DL,1GB,NAND FLASH
To build U-Boot for the MX6Q,1GB,NAND FLASH for example:
make gwventanaq1g_config
make

10
board/gateworks/gw_ventana/gw_ventana.c
View file

@ -1102,6 +1102,7 @@ void get_board_serial(struct tag_serialnr *serialnr)
* Board Support
*/
/* called from SPL board_init_f() */
int board_early_init_f(void)
{
setup_iomux_uart();
@ -1115,8 +1116,7 @@ int board_early_init_f(void)
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM,
CONFIG_DDR_MB*1024*1024);
gd->ram_size = imx_ddr_size();
return 0;
}
@ -1258,9 +1258,11 @@ int misc_init_r(void)
* env scripts will try loading each from most specific to
* least.
*/
if (is_cpu_type(MXC_CPU_MX6Q))
if (is_cpu_type(MXC_CPU_MX6Q) ||
is_cpu_type(MXC_CPU_MX6D))
cputype = "imx6q";
else if (is_cpu_type(MXC_CPU_MX6DL))
else if (is_cpu_type(MXC_CPU_MX6DL) ||
is_cpu_type(MXC_CPU_MX6SOLO))
cputype = "imx6dl";
memset(str, 0, sizeof(str));
for (i = 0; i < (sizeof(str)-1) && info->model[i]; i++)

15
board/gateworks/gw_ventana/gw_ventana.cfg
View file

@ -24,21 +24,6 @@ BOOT_FROM nand
#define __ASSEMBLY__
#include <config.h>
#include "asm/arch/mx6-ddr.h"
#include "asm/arch/iomux.h"
#include "asm/arch/crm_regs.h"
/* Memory configuration (size is overridden via eeprom config) */
#include "../../boundary/nitrogen6x/ddr-setup.cfg"
#if defined(CONFIG_MX6Q) && CONFIG_DDR_MB == 1024
#include "../../boundary/nitrogen6x/1066mhz_4x128mx16.cfg"
#elif defined(CONFIG_MX6DL) && CONFIG_DDR_MB == 1024
#include "../../boundary/nitrogen6x/800mhz_4x128mx16.cfg"
#elif defined(CONFIG_MX6DL) && CONFIG_DDR_MB == 512
#include "../../boundary/nitrogen6x/800mhz_2x128mx16.cfg"
#elif defined(CONFIG_MX6Q) && CONFIG_DDR_MB == 512
#include "../../boundary/nitrogen6x/800mhz_2x128mx16.cfg"
#else
#error "Unsupported CPU/Memory configuration"
#endif
#include "clocks.cfg"

419
board/gateworks/gw_ventana/gw_ventana_spl.c Normal file
View file

@ -0,0 +1,419 @@
/*
* Copyright (C) 2014 Gateworks Corporation
* Author: Tim Harvey <tharvey@gateworks.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <i2c.h>
#include <asm/io.h>
#include <asm/arch/iomux.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 <spl.h>
#include "ventana_eeprom.h"
DECLARE_GLOBAL_DATA_PTR;
#define RTT_NOM_120OHM /* use 120ohm Rtt_nom vs 60ohm (lower power) */
#define I2C_GSC 0
#define GSC_EEPROM_ADDR 0x51
#define GSC_EEPROM_DDR_SIZE 0x2B /* enum (512,1024,2048) MB */
#define GSC_EEPROM_DDR_WIDTH 0x2D /* enum (32,64) bit */
#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
PAD_CTL_ODE | PAD_CTL_SRE_FAST)
#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
#define CONFIG_SYS_I2C_SPEED 100000
/* I2C1: GSC */
static struct i2c_pads_info mx6q_i2c_pad_info0 = {
.scl = {
.i2c_mode = MX6Q_PAD_EIM_D21__I2C1_SCL | PC,
.gpio_mode = MX6Q_PAD_EIM_D21__GPIO3_IO21 | PC,
.gp = IMX_GPIO_NR(3, 21)
},
.sda = {
.i2c_mode = MX6Q_PAD_EIM_D28__I2C1_SDA | PC,
.gpio_mode = MX6Q_PAD_EIM_D28__GPIO3_IO28 | PC,
.gp = IMX_GPIO_NR(3, 28)
}
};
static struct i2c_pads_info mx6dl_i2c_pad_info0 = {
.scl = {
.i2c_mode = MX6DL_PAD_EIM_D21__I2C1_SCL | PC,
.gpio_mode = MX6DL_PAD_EIM_D21__GPIO3_IO21 | PC,
.gp = IMX_GPIO_NR(3, 21)
},
.sda = {
.i2c_mode = MX6DL_PAD_EIM_D28__I2C1_SDA | PC,
.gpio_mode = MX6DL_PAD_EIM_D28__GPIO3_IO28 | PC,
.gp = IMX_GPIO_NR(3, 28)
}
};
static void i2c_setup_iomux(void)
{
if (is_cpu_type(MXC_CPU_MX6Q))
setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6q_i2c_pad_info0);
else
setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6dl_i2c_pad_info0);
}
/* 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,
};
/* MT41K128M16JT-125 */
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,
};
/* GW54xx specific calibration */
static struct mx6_mmdc_calibration gw54xxq_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x00190018,
.p0_mpwldectrl1 = 0x0021001D,
.p1_mpwldectrl0 = 0x00160027,
.p1_mpwldectrl1 = 0x0012001E,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x43370346,
.p0_mpdgctrl1 = 0x032A0321,
.p1_mpdgctrl0 = 0x433A034D,
.p1_mpdgctrl1 = 0x032F0235,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x3C313539,
.p1_mprddlctl = 0x37333140,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x37393C38,
.p1_mpwrdlctl = 0x42334538,
};
/* GW53xx specific calibration */
static struct mx6_mmdc_calibration gw53xxq_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x00160013,
.p0_mpwldectrl1 = 0x00090024,
.p1_mpwldectrl0 = 0x001F0018,
.p1_mpwldectrl1 = 0x000C001C,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x433A034C,
.p0_mpdgctrl1 = 0x0336032F,
.p1_mpdgctrl0 = 0x4343034A,
.p1_mpdgctrl1 = 0x03370222,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x3F343638,
.p1_mprddlctl = 0x38373442,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x343A3E39,
.p1_mpwrdlctl = 0x44344239,
};
static struct mx6_mmdc_calibration gw53xxdl_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x003C003C,
.p0_mpwldectrl1 = 0x00330038,
.p1_mpwldectrl0 = 0x001F002A,
.p1_mpwldectrl1 = 0x0022003F,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x42410244,
.p0_mpdgctrl1 = 0x022D022D,
.p1_mpdgctrl0 = 0x4234023A,
.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,
};
/* GW52xx specific calibration */
static struct mx6_mmdc_calibration gw52xxdl_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x0040003F,
.p0_mpwldectrl1 = 0x00370037,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x42420244,
.p0_mpdgctrl1 = 0x022F022F,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x49464B4A,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x32362C32,
};
/* GW51xx specific calibration */
static struct mx6_mmdc_calibration gw51xxq_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x00150016,
.p0_mpwldectrl1 = 0x001F0017,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x433D034D,
.p0_mpdgctrl1 = 0x033D032F,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x3F313639,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x33393F36,
};
static struct mx6_mmdc_calibration gw51xxdl_mmdc_calib = {
/* write leveling calibration determine */
.p0_mpwldectrl0 = 0x003D003F,
.p0_mpwldectrl1 = 0x002F0038,
/* Read DQS Gating calibration */
.p0_mpdgctrl0 = 0x423A023A,
.p0_mpdgctrl1 = 0x022A0228,
/* Read Calibration: DQS delay relative to DQ read access */
.p0_mprddlctl = 0x48494C4C,
/* Write Calibration: DQ/DM delay relative to DQS write access */
.p0_mpwrdlctl = 0x34352D31,
};
static void spl_dram_init(int width, int size, int board_model)
{
struct mx6_ddr3_cfg *mem = &mt41k128m16jt_125;
struct mx6_mmdc_calibration *calib;
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) */
};
/*
* MMDC Calibration requires the following data:
* mx6_mmdc_calibration - board-specific calibration (routing delays)
* mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
* mx6_ddr_cfg - chip specific timing/layout details
*/
switch (board_model) {
default:
case GW51xx:
if (is_cpu_type(MXC_CPU_MX6Q))
calib = &gw51xxq_mmdc_calib;
else
calib = &gw51xxdl_mmdc_calib;
break;
case GW52xx:
calib = &gw52xxdl_mmdc_calib;
break;
case GW53xx:
if (is_cpu_type(MXC_CPU_MX6Q))
calib = &gw53xxq_mmdc_calib;
else
calib = &gw53xxdl_mmdc_calib;
break;
case GW54xx:
calib = &gw54xxq_mmdc_calib;
break;
}
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);
}
/*
* 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;
/*
* Zero out global data:
* - this shoudl be done by crt0.S
* - failure to zero it will cause i2c_setup to fail
*/
memset((void *)gd, 0, sizeof(struct global_data));
/* setup AIPS and disable watchdog */
arch_cpu_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)
{
}

6
boards.cfg
View file

@ -328,11 +328,7 @@ Active arm armv7 mx6 freescale mx6qsabreauto
Active arm armv7 mx6 freescale mx6sabresd mx6dlsabresd mx6sabresd:IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6dl.cfg,MX6DL Fabio Estevam <fabio.estevam@freescale.com>
Active arm armv7 mx6 freescale mx6sabresd mx6qsabresd mx6sabresd:IMX_CONFIG=board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg,MX6Q Fabio Estevam <fabio.estevam@freescale.com>
Active arm armv7 mx6 freescale mx6slevk mx6slevk mx6slevk:IMX_CONFIG=board/freescale/mx6slevk/imximage.cfg,MX6SL Fabio Estevam <fabio.estevam@freescale.com>
Active arm armv7 mx6 gateworks gw_ventana gwventanadl gw_ventana:IMX_CONFIG=board/gateworks/gw_ventana/gw_ventana.cfg,MX6DL,DDR_MB=512 Tim Harvey <tharvey@gateworks.com>
Active arm armv7 mx6 gateworks gw_ventana gwventanadl1g gw_ventana:IMX_CONFIG=board/gateworks/gw_ventana/gw_ventana.cfg,MX6DL,DDR_MB=1024 Tim Harvey <tharvey@gateworks.com>
Active arm armv7 mx6 gateworks gw_ventana gwventanaq gw_ventana:IMX_CONFIG=board/gateworks/gw_ventana/gw_ventana.cfg,MX6Q,DDR_MB=512 Tim Harvey <tharvey@gateworks.com>
Active arm armv7 mx6 gateworks gw_ventana gwventanaq1g gw_ventana:IMX_CONFIG=board/gateworks/gw_ventana/gw_ventana.cfg,MX6Q,DDR_MB=1024 Tim Harvey <tharvey@gateworks.com>
Active arm armv7 mx6 gateworks gw_ventana gwventanaq1gspi gw_ventana:IMX_CONFIG=board/gateworks/gw_ventana/gw_ventana.cfg,MX6Q,DDR_MB=1024,SPI_FLASH Tim Harvey <tharvey@gateworks.com>
Active arm armv7 mx6 gateworks gw_ventana gwventana gw_ventana:IMX_CONFIG=board/gateworks/gw_ventana/gw_ventana.cfg,MX6QDL,SPL Tim Harvey <tharvey@gateworks.com>
Active arm armv7 mx6 solidrun hummingboard hummingboard_solo hummingboard:IMX_CONFIG=board/solidrun/hummingboard/solo.cfg,MX6S,DDR_MB=512 Jon Nettleton <jon.nettleton@gmail.com>
Active arm armv7 omap3 - overo omap3_overo - Steve Sakoman <sakoman@gmail.com>
Active arm armv7 omap3 - pandora omap3_pandora - Grazvydas Ignotas <notasas@gmail.com>

11
include/configs/gw_ventana.h
View file

@ -7,6 +7,17 @@
#ifndef __CONFIG_H
#define __CONFIG_H
/* SPL */
#define CONFIG_SPL_NAND_SUPPORT
#define CONFIG_SPL_MMC_SUPPORT
#define CONFIG_SPL_FAT_SUPPORT
/*
#define CONFIG_SPL_SATA_SUPPORT
*/
/* Location in NAND to read U-Boot from */
#define CONFIG_SYS_NAND_U_BOOT_OFFS (14 * 1024 * 1024)
#include "imx6_spl.h" /* common IMX6 SPL configuration */
#include "mx6_common.h"
#define CONFIG_MX6
#define CONFIG_DISPLAY_CPUINFO /* display cpu info */