From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/board/gateworks/gw_ventana/eeprom.c | 267 ++++++++++++++++++++++++
1 file changed, 267 insertions(+)
create mode 100644 roms/u-boot/board/gateworks/gw_ventana/eeprom.c
(limited to 'roms/u-boot/board/gateworks/gw_ventana/eeprom.c')
diff --git a/roms/u-boot/board/gateworks/gw_ventana/eeprom.c b/roms/u-boot/board/gateworks/gw_ventana/eeprom.c
new file mode 100644
index 000000000..b9862c7df
--- /dev/null
+++ b/roms/u-boot/board/gateworks/gw_ventana/eeprom.c
@@ -0,0 +1,267 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2014 Gateworks Corporation
+ * Author: Tim Harvey <tharvey@gateworks.com>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <errno.h>
+#include <hexdump.h>
+#include <i2c.h>
+#include <log.h>
+#include <malloc.h>
+#include <asm/bitops.h>
+#include <linux/delay.h>
+
+#include "gsc.h"
+#include "ventana_eeprom.h"
+
+/* read ventana EEPROM, check for validity, and return baseboard type */
+int
+read_eeprom(int bus, struct ventana_board_info *info)
+{
+ int i;
+ int chksum;
+ char baseboard;
+ int type;
+ unsigned char *buf = (unsigned char *)info;
+
+ memset(info, 0, sizeof(*info));
+
+ /*
+ * On a board with a missing/depleted backup battery for GSC, the
+ * board may be ready to probe the GSC before its firmware is
+ * running. We will wait here indefinately for the GSC/EEPROM.
+ */
+ while (1) {
+ if (0 == i2c_set_bus_num(bus) &&
+ 0 == i2c_probe(GSC_EEPROM_ADDR))
+ break;
+ mdelay(1);
+ }
+
+ /* read eeprom config section */
+ mdelay(10);
+ if (gsc_i2c_read(GSC_EEPROM_ADDR, 0x00, 1, buf, sizeof(*info))) {
+ puts("EEPROM: Failed to read EEPROM\n");
+ return GW_UNKNOWN;
+ }
+
+ /* sanity checks */
+ if (info->model[0] != 'G' || info->model[1] != 'W') {
+ puts("EEPROM: Invalid Model in EEPROM\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf,
+ sizeof(*info));
+ return GW_UNKNOWN;
+ }
+
+ /* validate checksum */
+ for (chksum = 0, i = 0; i < sizeof(*info)-2; i++)
+ chksum += buf[i];
+ if ((info->chksum[0] != chksum>>8) ||
+ (info->chksum[1] != (chksum&0xff))) {
+ puts("EEPROM: Failed EEPROM checksum\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf,
+ sizeof(*info));
+ return GW_UNKNOWN;
+ }
+
+ /* original GW5400-A prototype */
+ baseboard = info->model[3];
+ if (strncasecmp((const char *)info->model, "GW5400-A", 8) == 0)
+ baseboard = '0';
+
+ type = GW_UNKNOWN;
+ switch (baseboard) {
+ case '0': /* original GW5400-A prototype */
+ type = GW54proto;
+ break;
+ case '1':
+ type = GW51xx;
+ break;
+ case '2':
+ type = GW52xx;
+ break;
+ case '3':
+ type = GW53xx;
+ break;
+ case '4':
+ type = GW54xx;
+ break;
+ case '5':
+ if (info->model[4] == '1') {
+ type = GW551x;
+ break;
+ } else if (info->model[4] == '2') {
+ type = GW552x;
+ break;
+ } else if (info->model[4] == '3') {
+ type = GW553x;
+ break;
+ }
+ break;
+ case '6':
+ if (info->model[4] == '0')
+ type = GW560x;
+ break;
+ case '9':
+ if (info->model[4] == '0' && info->model[5] == '1')
+ type = GW5901;
+ else if (info->model[4] == '0' && info->model[5] == '2')
+ type = GW5902;
+ else if (info->model[4] == '0' && info->model[5] == '3')
+ type = GW5903;
+ else if (info->model[4] == '0' && info->model[5] == '4')
+ type = GW5904;
+ else if (info->model[4] == '0' && info->model[5] == '5')
+ type = GW5905;
+ else if (info->model[4] == '0' && info->model[5] == '6')
+ type = GW5906;
+ else if (info->model[4] == '0' && info->model[5] == '7')
+ type = GW5907;
+ else if (info->model[4] == '0' && info->model[5] == '8')
+ type = GW5908;
+ else if (info->model[4] == '0' && info->model[5] == '9')
+ type = GW5909;
+ break;
+ default:
+ printf("EEPROM: Unknown model in EEPROM: %s\n", info->model);
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf,
+ sizeof(*info));
+ break;
+ }
+ return type;
+}
+
+/* list of config bits that the bootloader will remove from dtb if not set */
+struct ventana_eeprom_config econfig[] = {
+ { "eth0", "ethernet0", EECONFIG_ETH0 },
+ { "usb0", NULL, EECONFIG_USB0 },
+ { "usb1", NULL, EECONFIG_USB1 },
+ { "mmc0", NULL, EECONFIG_SD0 },
+ { "mmc1", NULL, EECONFIG_SD1 },
+ { "mmc2", NULL, EECONFIG_SD2 },
+ { "mmc3", NULL, EECONFIG_SD3 },
+ { /* Sentinel */ }
+};
+
+#if defined(CONFIG_CMD_EECONFIG) && !defined(CONFIG_SPL_BUILD)
+static struct ventana_eeprom_config *get_config(const char *name)
+{
+ struct ventana_eeprom_config *cfg = econfig;
+
+ while (cfg->name) {
+ if (0 == strcmp(name, cfg->name))
+ return cfg;
+ cfg++;
+ }
+ return NULL;
+}
+
+static u8 econfig_bytes[sizeof(ventana_info.config)];
+static int econfig_init = -1;
+
+static int do_econfig(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct ventana_eeprom_config *cfg;
+ struct ventana_board_info *info = &ventana_info;
+ int i;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ /* initialize */
+ if (econfig_init != 1) {
+ memcpy(econfig_bytes, info->config, sizeof(econfig_bytes));
+ econfig_init = 1;
+ }
+
+ /* list configs */
+ if ((strncmp(argv[1], "list", 4) == 0)) {
+ cfg = econfig;
+ while (cfg->name) {
+ printf("%s: %d\n", cfg->name,
+ test_bit(cfg->bit, econfig_bytes) ? 1 : 0);
+ cfg++;
+ }
+ }
+
+ /* save */
+ else if ((strncmp(argv[1], "save", 4) == 0)) {
+ unsigned char *buf = (unsigned char *)info;
+ int chksum;
+
+ /* calculate new checksum */
+ memcpy(info->config, econfig_bytes, sizeof(econfig_bytes));
+ for (chksum = 0, i = 0; i < sizeof(*info)-2; i++)
+ chksum += buf[i];
+ debug("old chksum:0x%04x\n",
+ (info->chksum[0] << 8) | info->chksum[1]);
+ debug("new chksum:0x%04x\n", chksum);
+ info->chksum[0] = chksum >> 8;
+ info->chksum[1] = chksum & 0xff;
+
+ /* write new config data */
+ if (gsc_i2c_write(GSC_EEPROM_ADDR, info->config - (u8 *)info,
+ 1, econfig_bytes, sizeof(econfig_bytes))) {
+ printf("EEPROM: Failed updating config\n");
+ return CMD_RET_FAILURE;
+ }
+
+ /* write new config data */
+ if (gsc_i2c_write(GSC_EEPROM_ADDR, info->chksum - (u8 *)info,
+ 1, info->chksum, 2)) {
+ printf("EEPROM: Failed updating checksum\n");
+ return CMD_RET_FAILURE;
+ }
+
+ printf("Config saved to EEPROM\n");
+ }
+
+ /* get config */
+ else if (argc == 2) {
+ cfg = get_config(argv[1]);
+ if (cfg) {
+ printf("%s: %d\n", cfg->name,
+ test_bit(cfg->bit, econfig_bytes) ? 1 : 0);
+ } else {
+ printf("invalid config: %s\n", argv[1]);
+ return CMD_RET_FAILURE;
+ }
+ }
+
+ /* set config */
+ else if (argc == 3) {
+ cfg = get_config(argv[1]);
+ if (cfg) {
+ if (simple_strtol(argv[2], NULL, 10)) {
+ test_and_set_bit(cfg->bit, econfig_bytes);
+ printf("Enabled %s\n", cfg->name);
+ } else {
+ test_and_clear_bit(cfg->bit, econfig_bytes);
+ printf("Disabled %s\n", cfg->name);
+ }
+ } else {
+ printf("invalid config: %s\n", argv[1]);
+ return CMD_RET_FAILURE;
+ }
+ }
+
+ else
+ return CMD_RET_USAGE;
+
+ return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(
+ econfig, 3, 0, do_econfig,
+ "EEPROM configuration",
+ "list - list config\n"
+ "save - save config to EEPROM\n"
+ "<name> - get config 'name'\n"
+ "<name> [0|1] - set config 'name' to value\n"
+);
+
+#endif /* CONFIG_CMD_EECONFIG */
--
cgit