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ti: AM437x: Use generic EEPROM detection logic

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Now that we have a generic TI eeprom logic which can be reused across
platforms, reuse the same.

This revision also includes fixes identified by Dave Gerlach
<d-gerlach@ti.com>

Cc: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Steven Kipisz <s-kipisz2@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Nishanth Menon 2016-02-24 12:30:56 -06:00 • committed by Tom Rini
parent 770e68c0a3
commit 5f8bb93b23
5 changed files with 39 additions and 89 deletions
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1
arch/arm/Kconfig
View file

@ -381,6 +381,7 @@ config TARGET_AM43XX_EVM
bool "Support am43xx_evm"
select CPU_V7
select SUPPORT_SPL
select TI_I2C_BOARD_DETECT
config TARGET_BAV335X
bool "Support bav335x"

2
board/ti/am43xx/Kconfig
View file

@ -12,4 +12,6 @@ config SYS_SOC
config SYS_CONFIG_NAME
default "am43xx_evm"
source "board/ti/common/Kconfig"
endif

87
board/ti/am43xx/board.c
View file

@ -19,6 +19,7 @@
#include <asm/arch/ddr_defs.h>
#include <asm/arch/gpio.h>
#include <asm/emif.h>
#include "../common/board_detect.h"
#include "board.h"
#include <power/pmic.h>
#include <power/tps65218.h>
@ -37,48 +38,9 @@ static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
/*
* Read header information from EEPROM into global structure.
*/
static int read_eeprom(struct am43xx_board_id *header)
static inline int __maybe_unused read_eeprom(void)
{
/* Check if baseboard eeprom is available */
if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
printf("Could not probe the EEPROM at 0x%x\n",
CONFIG_SYS_I2C_EEPROM_ADDR);
return -ENODEV;
}
/* read the eeprom using i2c */
if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)header,
sizeof(struct am43xx_board_id))) {
printf("Could not read the EEPROM\n");
return -EIO;
}
if (header->magic != 0xEE3355AA) {
/*
* read the eeprom using i2c again,
* but use only a 1 byte address
*/
if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1, (uchar *)header,
sizeof(struct am43xx_board_id))) {
printf("Could not read the EEPROM at 0x%x\n",
CONFIG_SYS_I2C_EEPROM_ADDR);
return -EIO;
}
if (header->magic != 0xEE3355AA) {
printf("Incorrect magic number (0x%x) in EEPROM\n",
header->magic);
return -EINVAL;
}
}
strncpy(am43xx_board_name, (char *)header->name, sizeof(header->name));
am43xx_board_name[sizeof(header->name)] = 0;
strncpy(am43xx_board_rev, (char *)header->version, sizeof(header->version));
am43xx_board_rev[sizeof(header->version)] = 0;
return 0;
return ti_i2c_eeprom_am_get(-1, CONFIG_SYS_I2C_EEPROM_ADDR);
}
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
@ -374,6 +336,9 @@ const struct dpll_params *get_dpll_ddr_params(void)
{
int ind = get_sys_clk_index();
if (read_eeprom() < 0)
return NULL;
if (board_is_eposevm())
return &epos_evm_dpll_ddr[ind];
else if (board_is_gpevm() || board_is_sk())
@ -381,7 +346,7 @@ const struct dpll_params *get_dpll_ddr_params(void)
else if (board_is_idk())
return &idk_dpll_ddr;
printf(" Board '%s' not supported\n", am43xx_board_name);
printf(" Board '%s' not supported\n", board_ti_get_name());
return NULL;
}
@ -512,16 +477,29 @@ void scale_vcores_idk(u32 m)
}
}
void gpi2c_init(void)
{
/* When needed to be invoked prior to BSS initialization */
static bool first_time = true;
if (first_time) {
enable_i2c0_pin_mux();
i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED,
CONFIG_SYS_OMAP24_I2C_SLAVE);
first_time = false;
}
}
void scale_vcores(void)
{
const struct dpll_params *mpu_params;
struct am43xx_board_id header;
enable_i2c0_pin_mux();
i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
if (read_eeprom(&header) < 0)
if (read_eeprom() < 0)
puts("Could not get board ID.\n");
/* Ensure I2C is initialized for PMIC configuration */
gpi2c_init();
/* Get the frequency */
mpu_params = get_dpll_mpu_params();
@ -558,6 +536,8 @@ static void enable_vtt_regulator(void)
void sdram_init(void)
{
if (read_eeprom() < 0)
return;
/*
* EPOS EVM has 1GB LPDDR2 connected to EMIF.
* GP EMV has 1GB DDR3 connected to EMIF
@ -655,20 +635,7 @@ int board_init(void)
int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
char safe_string[HDR_NAME_LEN + 1];
struct am43xx_board_id header;
if (read_eeprom(&header) < 0)
puts("Could not get board ID.\n");
/* Now set variables based on the header. */
strncpy(safe_string, (char *)header.name, sizeof(header.name));
safe_string[sizeof(header.name)] = 0;
setenv("board_name", safe_string);
strncpy(safe_string, (char *)header.version, sizeof(header.version));
safe_string[sizeof(header.version)] = 0;
setenv("board_rev", safe_string);
set_board_info_env(NULL);
#endif
return 0;
}

37
board/ti/am43xx/board.h
View file

@ -14,58 +14,37 @@
#include <asm/arch/omap.h>
static char *const am43xx_board_name = (char *)AM4372_BOARD_NAME_START;
static char *const am43xx_board_rev = (char *)AM4372_BOARD_VERSION_START;
/*
* TI AM437x EVMs define a system EEPROM that defines certain sub-fields.
* We use these fields to in turn see what board we are on, and what
* that might require us to set or not set.
*/
#define HDR_NO_OF_MAC_ADDR 3
#define HDR_ETH_ALEN 6
#define HDR_NAME_LEN 8
#define DEV_ATTR_MAX_OFFSET 5
#define DEV_ATTR_MIN_OFFSET 0
struct am43xx_board_id {
unsigned int magic;
char name[HDR_NAME_LEN];
char version[4];
char serial[12];
char config[32];
char mac_addr[HDR_NO_OF_MAC_ADDR][HDR_ETH_ALEN];
};
#define DEV_ATTR_MAX_OFFSET 5
#define DEV_ATTR_MIN_OFFSET 0
static inline int board_is_eposevm(void)
{
return !strncmp(am43xx_board_name, "AM43EPOS", HDR_NAME_LEN);
return board_ti_is("AM43EPOS");
}
static inline int board_is_gpevm(void)
{
return !strncmp(am43xx_board_name, "AM43__GP", HDR_NAME_LEN);
return board_ti_is("AM43__GP");
}
static inline int board_is_sk(void)
{
return !strncmp(am43xx_board_name, "AM43__SK", HDR_NAME_LEN);
return board_ti_is("AM43__SK");
}
static inline int board_is_idk(void)
{
return !strncmp(am43xx_board_name, "AM43_IDK", HDR_NAME_LEN);
return board_ti_is("AM43_IDK");
}
static inline int board_is_evm_14_or_later(void)
{
return (board_is_gpevm() && strncmp("1.4", am43xx_board_rev, 3) <= 0);
return (board_is_gpevm() && strncmp("1.4", board_ti_get_rev(), 3) <= 0);
}
static inline int board_is_evm_12_or_later(void)
{
return (board_is_gpevm() && strncmp("1.2", am43xx_board_rev, 3) <= 0);
return (board_is_gpevm() && strncmp("1.2", board_ti_get_rev(), 3) <= 0);
}
void enable_uart0_pin_mux(void);

1
board/ti/am43xx/mux.c
View file

@ -9,6 +9,7 @@
#include <common.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mux.h>
#include "../common/board_detect.h"
#include "board.h"
static struct module_pin_mux rmii1_pin_mux[] = {