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https://github.com/AsahiLinux/u-boot
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fa281f64a1
Initialize both ESM and ESM_PMIC support if available for the board. If support is not available for either, a warning is printed out. ESM signals are only properly routed on PM2 version of the J721E SOM, so only probe the drivers on this device. Signed-off-by: Tero Kristo <t-kristo@ti.com>
373 lines
8.2 KiB
C
373 lines
8.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Board specific initialization for J721E EVM
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*
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* Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
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* Lokesh Vutla <lokeshvutla@ti.com>
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*
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*/
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#include <common.h>
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#include <init.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/hardware.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include <spl.h>
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#include <asm/arch/sys_proto.h>
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#include <dm.h>
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#include <dm/uclass-internal.h>
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#include "../common/board_detect.h"
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#define board_is_j721e_som() (board_ti_k3_is("J721EX-PM1-SOM") || \
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board_ti_k3_is("J721EX-PM2-SOM"))
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/* Max number of MAC addresses that are parsed/processed per daughter card */
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#define DAUGHTER_CARD_NO_OF_MAC_ADDR 8
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DECLARE_GLOBAL_DATA_PTR;
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int board_init(void)
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{
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return 0;
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}
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int dram_init(void)
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{
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#ifdef CONFIG_PHYS_64BIT
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gd->ram_size = 0x100000000;
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#else
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gd->ram_size = 0x80000000;
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#endif
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return 0;
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}
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ulong board_get_usable_ram_top(ulong total_size)
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{
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#ifdef CONFIG_PHYS_64BIT
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/* Limit RAM used by U-Boot to the DDR low region */
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if (gd->ram_top > 0x100000000)
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return 0x100000000;
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#endif
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return gd->ram_top;
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}
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int dram_init_banksize(void)
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{
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/* Bank 0 declares the memory available in the DDR low region */
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_dram[0].size = 0x80000000;
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gd->ram_size = 0x80000000;
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#ifdef CONFIG_PHYS_64BIT
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/* Bank 1 declares the memory available in the DDR high region */
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gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE1;
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gd->bd->bi_dram[1].size = 0x80000000;
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gd->ram_size = 0x100000000;
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#endif
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return 0;
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}
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#ifdef CONFIG_SPL_LOAD_FIT
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int board_fit_config_name_match(const char *name)
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{
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if (!strcmp(name, "k3-j721e-common-proc-board"))
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return 0;
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return -1;
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}
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#endif
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#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
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int ft_board_setup(void *blob, bd_t *bd)
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{
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int ret;
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ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", "sram@70000000");
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if (ret)
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printf("%s: fixing up msmc ram failed %d\n", __func__, ret);
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return ret;
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}
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#endif
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int do_board_detect(void)
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{
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int ret;
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ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS,
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CONFIG_EEPROM_CHIP_ADDRESS);
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if (ret)
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pr_err("Reading on-board EEPROM at 0x%02x failed %d\n",
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CONFIG_EEPROM_CHIP_ADDRESS, ret);
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return ret;
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}
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int checkboard(void)
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{
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struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
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if (do_board_detect())
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/* EEPROM not populated */
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printf("Board: %s rev %s\n", "J721EX-PM1-SOM", "E2");
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else
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printf("Board: %s rev %s\n", ep->name, ep->version);
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return 0;
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}
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static void setup_board_eeprom_env(void)
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{
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char *name = "j721e";
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if (do_board_detect())
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goto invalid_eeprom;
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if (board_is_j721e_som())
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name = "j721e";
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else
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printf("Unidentified board claims %s in eeprom header\n",
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board_ti_get_name());
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invalid_eeprom:
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set_board_info_env_am6(name);
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}
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static void setup_serial(void)
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{
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struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
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unsigned long board_serial;
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char *endp;
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char serial_string[17] = { 0 };
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if (env_get("serial#"))
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return;
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board_serial = simple_strtoul(ep->serial, &endp, 16);
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if (*endp != '\0') {
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pr_err("Error: Can't set serial# to %s\n", ep->serial);
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return;
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}
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snprintf(serial_string, sizeof(serial_string), "%016lx", board_serial);
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env_set("serial#", serial_string);
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}
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/*
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* Declaration of daughtercards to probe. Note that when adding more
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* cards they should be grouped by the 'i2c_addr' field to allow for a
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* more efficient probing process.
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*/
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static const struct {
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u8 i2c_addr; /* I2C address of card EEPROM */
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char *card_name; /* EEPROM-programmed card name */
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char *dtbo_name; /* Device tree overlay to apply */
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u8 eth_offset; /* ethXaddr MAC address index offset */
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} ext_cards[] = {
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{
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0x51,
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"J7X-BASE-CPB",
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"", /* No dtbo for this board */
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0,
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},
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{
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0x52,
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"J7X-INFOTAN-EXP",
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"", /* No dtbo for this board */
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0,
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},
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{
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0x52,
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"J7X-GESI-EXP",
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"", /* No dtbo for this board */
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5, /* Start populating from eth5addr */
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},
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{
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0x54,
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"J7X-VSC8514-ETH",
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"", /* No dtbo for this board */
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1, /* Start populating from eth1addr */
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},
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};
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static bool daughter_card_detect_flags[ARRAY_SIZE(ext_cards)];
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const char *board_fit_get_additionnal_images(int index, const char *type)
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{
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int i, j;
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if (strcmp(type, FIT_FDT_PROP))
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return NULL;
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j = 0;
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for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
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if (daughter_card_detect_flags[i]) {
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if (j == index) {
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/*
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* Return dtbo name only if populated,
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* otherwise stop parsing here.
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*/
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if (strlen(ext_cards[i].dtbo_name))
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return ext_cards[i].dtbo_name;
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else
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return NULL;
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};
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j++;
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}
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}
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return NULL;
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}
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static int probe_daughtercards(void)
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{
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char mac_addr[DAUGHTER_CARD_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
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bool eeprom_read_success;
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struct ti_am6_eeprom ep;
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u8 previous_i2c_addr;
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u8 mac_addr_cnt;
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int i;
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int ret;
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/* Mark previous I2C address variable as not populated */
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previous_i2c_addr = 0xff;
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/* No EEPROM data was read yet */
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eeprom_read_success = false;
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/* Iterate through list of daughtercards */
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for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
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/* Obtain card-specific I2C address */
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u8 i2c_addr = ext_cards[i].i2c_addr;
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/* Read card EEPROM if not already read previously */
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if (i2c_addr != previous_i2c_addr) {
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/* Store I2C address so we can avoid reading twice */
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previous_i2c_addr = i2c_addr;
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/* Get and parse the daughter card EEPROM record */
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ret = ti_i2c_eeprom_am6_get(CONFIG_EEPROM_BUS_ADDRESS,
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i2c_addr,
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&ep,
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(char **)mac_addr,
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DAUGHTER_CARD_NO_OF_MAC_ADDR,
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&mac_addr_cnt);
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if (ret) {
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debug("%s: No daughtercard EEPROM at 0x%02x found %d\n",
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__func__, i2c_addr, ret);
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eeprom_read_success = false;
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/* Skip to the next daughtercard to probe */
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continue;
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}
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/* EEPROM read successful, okay to further process. */
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eeprom_read_success = true;
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}
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/* Only continue processing if EEPROM data was read */
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if (!eeprom_read_success)
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continue;
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/* Only process the parsed data if we found a match */
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if (strncmp(ep.name, ext_cards[i].card_name, sizeof(ep.name)))
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continue;
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printf("Detected: %s rev %s\n", ep.name, ep.version);
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daughter_card_detect_flags[i] = true;
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#ifndef CONFIG_SPL_BUILD
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int j;
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/*
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* Populate any MAC addresses from daughtercard into the U-Boot
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* environment, starting with a card-specific offset so we can
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* have multiple ext_cards contribute to the MAC pool in a well-
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* defined manner.
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*/
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for (j = 0; j < mac_addr_cnt; j++) {
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if (!is_valid_ethaddr((u8 *)mac_addr[j]))
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continue;
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eth_env_set_enetaddr_by_index("eth",
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ext_cards[i].eth_offset + j,
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(uchar *)mac_addr[j]);
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}
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#endif
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}
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#ifndef CONFIG_SPL_BUILD
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char name_overlays[1024] = { 0 };
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for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
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if (!daughter_card_detect_flags[i])
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continue;
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/* Skip if no overlays are to be added */
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if (!strlen(ext_cards[i].dtbo_name))
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continue;
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/*
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* Make sure we are not running out of buffer space by checking
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* if we can fit the new overlay, a trailing space to be used
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* as a separator, plus the terminating zero.
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*/
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if (strlen(name_overlays) + strlen(ext_cards[i].dtbo_name) + 2 >
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sizeof(name_overlays))
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return -ENOMEM;
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/* Append to our list of overlays */
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strcat(name_overlays, ext_cards[i].dtbo_name);
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strcat(name_overlays, " ");
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}
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/* Apply device tree overlay(s) to the U-Boot environment, if any */
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if (strlen(name_overlays))
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return env_set("name_overlays", name_overlays);
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#endif
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return 0;
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}
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int board_late_init(void)
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{
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setup_board_eeprom_env();
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setup_serial();
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/* Check for and probe any plugged-in daughtercards */
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probe_daughtercards();
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return 0;
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}
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void spl_board_init(void)
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{
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#if defined(CONFIG_ESM_K3) || defined(CONFIG_ESM_PMIC)
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struct udevice *dev;
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int ret;
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#endif
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probe_daughtercards();
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#ifdef CONFIG_ESM_K3
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if (board_ti_k3_is("J721EX-PM2-SOM")) {
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ret = uclass_get_device_by_driver(UCLASS_MISC,
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DM_GET_DRIVER(k3_esm), &dev);
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if (ret)
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printf("ESM init failed: %d\n", ret);
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}
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#endif
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#ifdef CONFIG_ESM_PMIC
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if (board_ti_k3_is("J721EX-PM2-SOM")) {
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ret = uclass_get_device_by_driver(UCLASS_MISC,
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DM_GET_DRIVER(pmic_esm),
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&dev);
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if (ret)
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printf("ESM PMIC init failed: %d\n", ret);
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}
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#endif
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}
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