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ARM: imx: Factor common code out of Data Modul i.MX8M Mini eDM SBC

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Pull common.c into common subdirectory of the board file,
since this code can be reused by other Data Modul SBCs.
Drop the include of lpddr4_timing.h, which is unneeded.

Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut 2022-12-11 21:17:14 +01:00 committed by Stefano Babic
parent 3bb15941ff
commit 5cae28c3b1
7 changed files with 220 additions and 180 deletions
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194
board/data_modul/common/common.c Normal file
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@ -0,0 +1,194 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2022 Marek Vasut <marex@denx.de>
*/
#include <common.h>
#include <asm-generic/gpio.h>
#include <asm-generic/sections.h>
#include <asm/arch/clock.h>
#include <asm/arch/ddr.h>
#include <asm/arch/sys_proto.h>
#include <asm/io.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/mach-imx/iomux-v3.h>
#include <common.h>
#include <dm/uclass.h>
#include <hang.h>
#include <i2c_eeprom.h>
#include <image.h>
#include <init.h>
#include <net.h>
#include <spl.h>
#include <dm/uclass.h>
#include <dm/device.h>
#include <dm/uclass-internal.h>
#include <dm/device-internal.h>
DECLARE_GLOBAL_DATA_PTR;
#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
u8 dmo_get_memcfg(void)
{
struct gpio_desc gpio[4];
u8 memcfg = 0;
ofnode node;
int i, ret;
node = ofnode_path("/config");
if (!ofnode_valid(node)) {
printf("%s: no /config node?\n", __func__);
return BIT(2) | BIT(0);
}
ret = gpio_request_list_by_name_nodev(node,
"dmo,ram-coding-gpios",
gpio, ARRAY_SIZE(gpio),
GPIOD_IS_IN);
for (i = 0; i < ret; i++)
memcfg |= !!dm_gpio_get_value(&(gpio[i])) << i;
gpio_free_list_nodev(gpio, ret);
return memcfg;
}
int board_phys_sdram_size(phys_size_t *size)
{
u8 memcfg = dmo_get_memcfg();
*size = (4ULL >> ((memcfg >> 1) & 0x3)) * SZ_1G;
return 0;
}
#ifdef CONFIG_SPL_BUILD
static void data_modul_imx_edm_sbc_early_init_f(const iomux_v3_cfg_t wdog_pad)
{
struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
imx_iomux_v3_setup_pad(wdog_pad | MUX_PAD_CTRL(WDOG_PAD_CTRL));
set_wdog_reset(wdog);
}
__weak int data_modul_imx_edm_sbc_board_power_init(void)
{
return 0;
}
static void spl_dram_init(struct dram_timing_info *dram_timing_info[8])
{
u8 memcfg = dmo_get_memcfg();
int i;
printf("DDR: %d GiB x%d [0x%x]\n",
/* 0..4 GiB, 1..2 GiB, 0..1 GiB */
4 >> ((memcfg >> 1) & 0x3),
/* 0..x32, 1..x16 */
32 >> (memcfg & BIT(0)),
memcfg);
if (!dram_timing_info[memcfg]) {
printf("Unsupported DRAM strapping, trying lowest supported. MEMCFG=0x%x\n",
memcfg);
for (i = 7; i >= 0; i--)
if (dram_timing_info[i]) /* Configuration found */
break;
}
ddr_init(dram_timing_info[memcfg]);
}
void dmo_board_init_f(const iomux_v3_cfg_t wdog_pad,
struct dram_timing_info *dram_timing_info[8])
{
struct udevice *dev;
int ret;
icache_enable();
arch_cpu_init();
init_uart_clk(2);
data_modul_imx_edm_sbc_early_init_f(wdog_pad);
/* Clear the BSS. */
memset(__bss_start, 0, __bss_end - __bss_start);
ret = spl_early_init();
if (ret) {
debug("spl_early_init() failed: %d\n", ret);
hang();
}
preloader_console_init();
ret = uclass_get_device_by_name(UCLASS_CLK,
"clock-controller@30380000",
&dev);
if (ret < 0) {
printf("Failed to find clock node. Check device tree\n");
hang();
}
enable_tzc380();
data_modul_imx_edm_sbc_board_power_init();
/* DDR initialization */
spl_dram_init(dram_timing_info);
board_init_r(NULL, 0);
}
#else
void dmo_setup_boot_device(void)
{
int boot_device = get_boot_device();
char *devnum;
devnum = env_get("devnum");
if (devnum) /* devnum is already set */
return;
if (boot_device == MMC3_BOOT) /* eMMC */
env_set_ulong("devnum", 0);
else
env_set_ulong("devnum", 1);
}
void dmo_setup_mac_address(void)
{
unsigned char enetaddr[6];
struct udevice *dev;
int off, ret;
ret = eth_env_get_enetaddr("ethaddr", enetaddr);
if (ret) /* ethaddr is already set */
return;
off = fdt_path_offset(gd->fdt_blob, "eeprom0");
if (off < 0) {
printf("%s: No eeprom0 path offset\n", __func__);
return;
}
ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev);
if (ret) {
printf("Cannot find EEPROM!\n");
return;
}
ret = i2c_eeprom_read(dev, 0xb0, enetaddr, 0x6);
if (ret) {
printf("Error reading configuration EEPROM!\n");
return;
}
if (is_valid_ethaddr(enetaddr))
eth_env_set_enetaddr("ethaddr", enetaddr);
}
#endif

18
board/data_modul/common/common.h Normal file
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@ -0,0 +1,18 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2022 Marek Vasut <marex@denx.de>
*/
#ifndef __EDM_SBC_COMMON_H__
#define __EDM_SBC_COMMON_H__
#include <asm/arch/ddr.h>
#include <asm/mach-imx/iomux-v3.h>
u8 dmo_get_memcfg(void);
void dmo_board_init_f(const iomux_v3_cfg_t wdog_pad,
struct dram_timing_info *dram_timing_info[8]);
void dmo_setup_boot_device(void);
void dmo_setup_mac_address(void);
#endif /* __EDM_SBC_COMMON_H__ */

2
board/data_modul/imx8mm_edm_sbc/Makefile
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@ -10,4 +10,4 @@ else
obj-y += imx8mm_data_modul_edm_sbc.o
endif
obj-y += common.o
obj-y += ../common/common.o

37
board/data_modul/imx8mm_edm_sbc/common.c
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@ -1,37 +0,0 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2022 Marek Vasut <marex@denx.de>
*/
#include <common.h>
#include <asm/io.h>
#include <asm-generic/gpio.h>
#include "lpddr4_timing.h"
DECLARE_GLOBAL_DATA_PTR;
u8 dmo_get_memcfg(void)
{
struct gpio_desc gpio[4];
u8 memcfg = 0;
ofnode node;
int i, ret;
node = ofnode_path("/config");
if (!ofnode_valid(node)) {
printf("%s: no /config node?\n", __func__);
return BIT(2) | BIT(0);
}
ret = gpio_request_list_by_name_nodev(node,
"dmo,ram-coding-gpios",
gpio, ARRAY_SIZE(gpio),
GPIOD_IS_IN);
for (i = 0; i < ret; i++)
memcfg |= !!dm_gpio_get_value(&(gpio[i])) << i;
gpio_free_list_nodev(gpio, ret);
return memcfg;
}

66
board/data_modul/imx8mm_edm_sbc/imx8mm_data_modul_edm_sbc.c
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@ -5,76 +5,16 @@
#include <common.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/io.h>
#include <asm/mach-imx/boot_mode.h>
#include <dm.h>
#include <dm/device-internal.h>
#include <i2c_eeprom.h>
#include <malloc.h>
#include <net.h>
#include <spl.h>
#include "lpddr4_timing.h"
#include "../common/common.h"
DECLARE_GLOBAL_DATA_PTR;
int board_phys_sdram_size(phys_size_t *size)
{
u8 memcfg = dmo_get_memcfg();
*size = (4ULL >> ((memcfg >> 1) & 0x3)) * SZ_1G;
return 0;
}
static void setup_mac_address(void)
{
unsigned char enetaddr[6];
struct udevice *dev;
int off, ret;
ret = eth_env_get_enetaddr("ethaddr", enetaddr);
if (ret) /* ethaddr is already set */
return;
off = fdt_path_offset(gd->fdt_blob, "eeprom0");
if (off < 0) {
printf("%s: No eeprom0 path offset\n", __func__);
return;
}
ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev);
if (ret) {
printf("Cannot find EEPROM!\n");
return;
}
ret = i2c_eeprom_read(dev, 0xb0, enetaddr, 0x6);
if (ret) {
printf("Error reading configuration EEPROM!\n");
return;
}
if (is_valid_ethaddr(enetaddr))
eth_env_set_enetaddr("ethaddr", enetaddr);
}
static void setup_boot_device(void)
{
int boot_device = get_boot_device();
char *devnum;
devnum = env_get("devnum");
if (devnum) /* devnum is already set */
return;
if (boot_device == MMC3_BOOT) /* eMMC */
env_set_ulong("devnum", 0);
else
env_set_ulong("devnum", 1);
}
int board_init(void)
{
return 0;
@ -85,8 +25,8 @@ int board_late_init(void)
struct udevice *dev;
int ret;
setup_boot_device();
setup_mac_address();
dmo_setup_boot_device();
dmo_setup_mac_address();
ret = uclass_get_device_by_name(UCLASS_MISC, "usb-hub@2c", &dev);
if (ret)

2
board/data_modul/imx8mm_edm_sbc/lpddr4_timing.h
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@ -9,6 +9,4 @@
extern struct dram_timing_info dmo_imx8mm_sbc_dram_timing_16_32;
extern struct dram_timing_info dmo_imx8mm_sbc_dram_timing_32_32;
u8 dmo_get_memcfg(void);
#endif /* __LPDDR4_TIMING_H__ */

81
board/data_modul/imx8mm_edm_sbc/spl.c
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@ -26,24 +26,11 @@
#include "lpddr4_timing.h"
#include "../common/common.h"
DECLARE_GLOBAL_DATA_PTR;
#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
static const iomux_v3_cfg_t wdog_pads[] = {
IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
};
static void data_modul_imx8mm_edm_sbc_early_init_f(void)
{
struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
set_wdog_reset(wdog);
}
static int data_modul_imx8mm_edm_sbc_board_power_init(void)
int data_modul_imx_edm_sbc_board_power_init(void)
{
struct udevice *dev;
int ret;
@ -105,67 +92,7 @@ static struct dram_timing_info *dram_timing_info[8] = {
NULL, /* INVALID */
};
static void spl_dram_init(void)
{
u8 memcfg = dmo_get_memcfg();
int i;
printf("DDR: %d GiB x%d [0x%x]\n",
/* 0..4 GiB, 1..2 GiB, 0..1 GiB */
4 >> ((memcfg >> 1) & 0x3),
/* 0..x32, 1..x16 */
32 >> (memcfg & BIT(0)),
memcfg);
if (!dram_timing_info[memcfg]) {
printf("Unsupported DRAM strapping, trying lowest supported. MEMCFG=0x%x\n",
memcfg);
for (i = ARRAY_SIZE(dram_timing_info) - 1; i >= 0; i--)
if (dram_timing_info[i]) /* Configuration found */
break;
}
ddr_init(dram_timing_info[memcfg]);
}
void board_init_f(ulong dummy)
{
struct udevice *dev;
int ret;
icache_enable();
arch_cpu_init();
init_uart_clk(2);
data_modul_imx8mm_edm_sbc_early_init_f();
/* Clear the BSS. */
memset(__bss_start, 0, __bss_end - __bss_start);
ret = spl_early_init();
if (ret) {
debug("spl_early_init() failed: %d\n", ret);
hang();
}
preloader_console_init();
ret = uclass_get_device_by_name(UCLASS_CLK,
"clock-controller@30380000",
&dev);
if (ret < 0) {
printf("Failed to find clock node. Check device tree\n");
hang();
}
enable_tzc380();
data_modul_imx8mm_edm_sbc_board_power_init();
/* DDR initialization */
spl_dram_init();
board_init_r(NULL, 0);
dmo_board_init_f(IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B, dram_timing_info);
}