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Diffstat (limited to 'board/ti/j721e/evm.c')
-rw-r--r--board/ti/j721e/evm.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/board/ti/j721e/evm.c b/board/ti/j721e/evm.c
index 51b121ce05..aa2240b852 100644
--- a/board/ti/j721e/evm.c
+++ b/board/ti/j721e/evm.c
@@ -9,10 +9,21 @@
#include <common.h>
#include <init.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/hardware.h>
+#include <asm/gpio.h>
#include <asm/io.h>
#include <spl.h>
#include <asm/arch/sys_proto.h>
+#include "../common/board_detect.h"
+
+#define board_is_j721e_som() (board_ti_k3_is("J721EX-PM1-SOM") || \
+ board_ti_k3_is("J721EX-PM2-SOM"))
+
+/* Max number of MAC addresses that are parsed/processed per daughter card */
+#define DAUGHTER_CARD_NO_OF_MAC_ADDR 8
+
DECLARE_GLOBAL_DATA_PTR;
int board_init(void)
@@ -81,3 +92,256 @@ int ft_board_setup(void *blob, bd_t *bd)
return ret;
}
#endif
+
+int do_board_detect(void)
+{
+ int ret;
+
+ ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS,
+ CONFIG_EEPROM_CHIP_ADDRESS);
+ if (ret)
+ pr_err("Reading on-board EEPROM at 0x%02x failed %d\n",
+ CONFIG_EEPROM_CHIP_ADDRESS, ret);
+
+ return ret;
+}
+
+int checkboard(void)
+{
+ struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
+
+ if (do_board_detect())
+ /* EEPROM not populated */
+ printf("Board: %s rev %s\n", "J721EX-PM1-SOM", "E2");
+ else
+ printf("Board: %s rev %s\n", ep->name, ep->version);
+
+ return 0;
+}
+
+static void setup_board_eeprom_env(void)
+{
+ char *name = "j721e";
+
+ if (do_board_detect())
+ goto invalid_eeprom;
+
+ if (board_is_j721e_som())
+ name = "j721e";
+ else
+ printf("Unidentified board claims %s in eeprom header\n",
+ board_ti_get_name());
+
+invalid_eeprom:
+ set_board_info_env_am6(name);
+}
+
+static void setup_serial(void)
+{
+ struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
+ unsigned long board_serial;
+ char *endp;
+ char serial_string[17] = { 0 };
+
+ if (env_get("serial#"))
+ return;
+
+ board_serial = simple_strtoul(ep->serial, &endp, 16);
+ if (*endp != '\0') {
+ pr_err("Error: Can't set serial# to %s\n", ep->serial);
+ return;
+ }
+
+ snprintf(serial_string, sizeof(serial_string), "%016lx", board_serial);
+ env_set("serial#", serial_string);
+}
+
+/*
+ * Declaration of daughtercards to probe. Note that when adding more
+ * cards they should be grouped by the 'i2c_addr' field to allow for a
+ * more efficient probing process.
+ */
+static const struct {
+ u8 i2c_addr; /* I2C address of card EEPROM */
+ char *card_name; /* EEPROM-programmed card name */
+ char *dtbo_name; /* Device tree overlay to apply */
+ u8 eth_offset; /* ethXaddr MAC address index offset */
+} ext_cards[] = {
+ {
+ 0x51,
+ "J7X-BASE-CPB",
+ "", /* No dtbo for this board */
+ 0,
+ },
+ {
+ 0x52,
+ "J7X-INFOTAN-EXP",
+ "", /* No dtbo for this board */
+ 0,
+ },
+ {
+ 0x52,
+ "J7X-GESI-EXP",
+ "", /* No dtbo for this board */
+ 5, /* Start populating from eth5addr */
+ },
+ {
+ 0x54,
+ "J7X-VSC8514-ETH",
+ "", /* No dtbo for this board */
+ 1, /* Start populating from eth1addr */
+ },
+};
+
+static bool daughter_card_detect_flags[ARRAY_SIZE(ext_cards)];
+
+const char *board_fit_get_additionnal_images(int index, const char *type)
+{
+ int i, j;
+
+ if (strcmp(type, FIT_FDT_PROP))
+ return NULL;
+
+ j = 0;
+ for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
+ if (daughter_card_detect_flags[i]) {
+ if (j == index) {
+ /*
+ * Return dtbo name only if populated,
+ * otherwise stop parsing here.
+ */
+ if (strlen(ext_cards[i].dtbo_name))
+ return ext_cards[i].dtbo_name;
+ else
+ return NULL;
+ };
+
+ j++;
+ }
+ }
+
+ return NULL;
+}
+
+static int probe_daughtercards(void)
+{
+ char mac_addr[DAUGHTER_CARD_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
+ bool eeprom_read_success;
+ struct ti_am6_eeprom ep;
+ u8 previous_i2c_addr;
+ u8 mac_addr_cnt;
+ int i;
+ int ret;
+
+ /* Mark previous I2C address variable as not populated */
+ previous_i2c_addr = 0xff;
+
+ /* No EEPROM data was read yet */
+ eeprom_read_success = false;
+
+ /* Iterate through list of daughtercards */
+ for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
+ /* Obtain card-specific I2C address */
+ u8 i2c_addr = ext_cards[i].i2c_addr;
+
+ /* Read card EEPROM if not already read previously */
+ if (i2c_addr != previous_i2c_addr) {
+ /* Store I2C address so we can avoid reading twice */
+ previous_i2c_addr = i2c_addr;
+
+ /* Get and parse the daughter card EEPROM record */
+ ret = ti_i2c_eeprom_am6_get(CONFIG_EEPROM_BUS_ADDRESS,
+ i2c_addr,
+ &ep,
+ (char **)mac_addr,
+ DAUGHTER_CARD_NO_OF_MAC_ADDR,
+ &mac_addr_cnt);
+ if (ret) {
+ debug("%s: No daughtercard EEPROM at 0x%02x found %d\n",
+ __func__, i2c_addr, ret);
+ eeprom_read_success = false;
+ /* Skip to the next daughtercard to probe */
+ continue;
+ }
+
+ /* EEPROM read successful, okay to further process. */
+ eeprom_read_success = true;
+ }
+
+ /* Only continue processing if EEPROM data was read */
+ if (!eeprom_read_success)
+ continue;
+
+ /* Only process the parsed data if we found a match */
+ if (strncmp(ep.name, ext_cards[i].card_name, sizeof(ep.name)))
+ continue;
+
+ printf("Detected: %s rev %s\n", ep.name, ep.version);
+ daughter_card_detect_flags[i] = true;
+
+#ifndef CONFIG_SPL_BUILD
+ int j;
+ /*
+ * Populate any MAC addresses from daughtercard into the U-Boot
+ * environment, starting with a card-specific offset so we can
+ * have multiple ext_cards contribute to the MAC pool in a well-
+ * defined manner.
+ */
+ for (j = 0; j < mac_addr_cnt; j++) {
+ if (!is_valid_ethaddr((u8 *)mac_addr[j]))
+ continue;
+
+ eth_env_set_enetaddr_by_index("eth",
+ ext_cards[i].eth_offset + j,
+ (uchar *)mac_addr[j]);
+ }
+#endif
+ }
+#ifndef CONFIG_SPL_BUILD
+ char name_overlays[1024] = { 0 };
+
+ for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
+ if (!daughter_card_detect_flags[i])
+ continue;
+
+ /* Skip if no overlays are to be added */
+ if (!strlen(ext_cards[i].dtbo_name))
+ continue;
+
+ /*
+ * Make sure we are not running out of buffer space by checking
+ * if we can fit the new overlay, a trailing space to be used
+ * as a separator, plus the terminating zero.
+ */
+ if (strlen(name_overlays) + strlen(ext_cards[i].dtbo_name) + 2 >
+ sizeof(name_overlays))
+ return -ENOMEM;
+
+ /* Append to our list of overlays */
+ strcat(name_overlays, ext_cards[i].dtbo_name);
+ strcat(name_overlays, " ");
+ }
+
+ /* Apply device tree overlay(s) to the U-Boot environment, if any */
+ if (strlen(name_overlays))
+ return env_set("name_overlays", name_overlays);
+#endif
+
+ return 0;
+}
+
+int board_late_init(void)
+{
+ setup_board_eeprom_env();
+ setup_serial();
+
+ /* Check for and probe any plugged-in daughtercards */
+ probe_daughtercards();
+
+ return 0;
+}
+
+void spl_board_init(void)
+{
+ probe_daughtercards();
+}
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