--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Gateworks Corporation
+ */
+
+#include <common.h>
+#include <gsc.h>
+#include <hexdump.h>
+#include <i2c.h>
+#include <dm/uclass.h>
+
+#include "eeprom.h"
+
+/* I2C */
+#define SOM_EEPROM_BUSNO 0
+#define SOM_EEPROM_ADDR 0x51
+#define BASEBOARD_EEPROM_BUSNO 1
+#define BASEBOARD_EEPROM_ADDR 0x52
+
+struct venice_board_info som_info;
+struct venice_board_info base_info;
+char venice_model[32];
+u32 venice_serial;
+
+/* return a mac address from EEPROM info */
+int eeprom_getmac(int index, uint8_t *address)
+{
+ int i, j;
+ u32 maclow, machigh;
+ u64 mac;
+
+ j = 0;
+ if (som_info.macno) {
+ maclow = som_info.mac[5];
+ maclow |= som_info.mac[4] << 8;
+ maclow |= som_info.mac[3] << 16;
+ maclow |= som_info.mac[2] << 24;
+ machigh = som_info.mac[1];
+ machigh |= som_info.mac[0] << 8;
+ mac = machigh;
+ mac <<= 32;
+ mac |= maclow;
+ for (i = 0; i < som_info.macno; i++, j++) {
+ if (index == j)
+ goto out;
+ }
+ }
+
+ maclow = base_info.mac[5];
+ maclow |= base_info.mac[4] << 8;
+ maclow |= base_info.mac[3] << 16;
+ maclow |= base_info.mac[2] << 24;
+ machigh = base_info.mac[1];
+ machigh |= base_info.mac[0] << 8;
+ mac = machigh;
+ mac <<= 32;
+ mac |= maclow;
+ for (i = 0; i < base_info.macno; i++, j++) {
+ if (index == j)
+ goto out;
+ }
+
+ return -EINVAL;
+
+out:
+ mac += i;
+ address[0] = (mac >> 40) & 0xff;
+ address[1] = (mac >> 32) & 0xff;
+ address[2] = (mac >> 24) & 0xff;
+ address[3] = (mac >> 16) & 0xff;
+ address[4] = (mac >> 8) & 0xff;
+ address[5] = (mac >> 0) & 0xff;
+
+ return 0;
+}
+
+static int eeprom_read(int busno, int slave, int alen, struct venice_board_info *info)
+{
+ int i;
+ int chksum;
+ unsigned char *buf = (unsigned char *)info;
+ struct udevice *dev, *bus;
+ int ret;
+
+ /* probe device */
+ ret = uclass_get_device_by_seq(UCLASS_I2C, busno, &bus);
+ if (ret)
+ return ret;
+ ret = dm_i2c_probe(bus, slave, 0, &dev);
+ if (ret)
+ return ret;
+
+ /* read eeprom config section */
+ memset(info, 0, sizeof(*info));
+ ret = i2c_set_chip_offset_len(dev, alen);
+ if (ret) {
+ puts("EEPROM: Failed to set alen\n");
+ return ret;
+ }
+ ret = dm_i2c_read(dev, 0x00, buf, sizeof(*info));
+ if (ret) {
+ if (slave == SOM_EEPROM_ADDR)
+ printf("EEPROM: Failed to read EEPROM\n");
+ return ret;
+ }
+
+ /* validate checksum */
+ for (chksum = 0, i = 0; i < (int)sizeof(*info) - 2; i++)
+ chksum += buf[i];
+ if ((info->chksum[0] != chksum >> 8) ||
+ (info->chksum[1] != (chksum & 0xff))) {
+ printf("EEPROM: I2C%d@0x%02x: Invalid Checksum\n", busno, slave);
+ print_hex_dump_bytes("", DUMP_PREFIX_NONE, buf, sizeof(*info));
+ memset(info, 0, sizeof(*info));
+ return -EINVAL;
+ }
+
+ /* sanity check valid model */
+ if (info->model[0] != 'G' || info->model[1] != 'W') {
+ printf("EEPROM: I2C%d@0x%02x: Invalid Model in EEPROM\n", busno, slave);
+ print_hex_dump_bytes("", DUMP_PREFIX_NONE, buf, sizeof(*info));
+ memset(info, 0, sizeof(*info));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* determine BOM revision from model */
+int get_bom_rev(const char *str)
+{
+ int rev_bom = 0;
+ int i;
+
+ for (i = strlen(str) - 1; i > 0; i--) {
+ if (str[i] == '-')
+ break;
+ if (str[i] >= '1' && str[i] <= '9') {
+ rev_bom = str[i] - '0';
+ break;
+ }
+ }
+ return rev_bom;
+}
+
+/* determine PCB revision from model */
+char get_pcb_rev(const char *str)
+{
+ char rev_pcb = 'A';
+ int i;
+
+ for (i = strlen(str) - 1; i > 0; i--) {
+ if (str[i] == '-')
+ break;
+ if (str[i] >= 'A') {
+ rev_pcb = str[i];
+ break;
+ }
+ }
+ return rev_pcb;
+}
+
+/*
+ * get dt name based on model and detail level:
+ *
+ * For boards that are a combination of a SoM plus a Baseboard:
+ * Venice SoM part numbers are GW70xx where xx is:
+ * 7000-7019: same PCB with som dt of '0x'
+ * 7020-7039: same PCB with som dt of '2x'
+ * 7040-7059: same PCB with som dt of '4x'
+ * 7060-7079: same PCB with som dt of '6x'
+ * 7080-7099: same PCB with som dt of '8x'
+ * Venice Baseboard part numbers are GW7xxx where xxx is:
+ * 7100-7199: same PCB with base dt of '71xx'
+ * 7200-7299: same PCB with base dt of '72xx'
+ * 7300-7399: same PCB with base dt of '73xx'
+ * 7400-7499: same PCB with base dt of '74xx'
+ * 7500-7599: same PCB with base dt of '75xx'
+ * 7600-7699: same PCB with base dt of '76xx'
+ * 7700-7799: same PCB with base dt of '77xx'
+ * 7800-7899: same PCB with base dt of '78xx'
+ * DT name is comprised of:
+ * gw<base dt>-<som dt>-[base-pcb-rev][base-bom-rev][som-pcb-rev][som-bom-rev]
+ *
+ * For board models from 7900-7999 each PCB is unique with its own dt:
+ * DT name is comprised:
+ * gw<model>-[pcb-rev][bom-rev]
+ *
+ */
+#define snprintfcat(dest, sz, fmt, ...) \
+ snprintf((dest) + strlen(dest), (sz) - strlen(dest), fmt, ##__VA_ARGS__)
+const char *eeprom_get_dtb_name(int level, char *buf, int sz)
+{
+#ifdef CONFIG_IMX8MM
+ const char *pre = "imx8mm-venice-gw";
+#else
+ const char *pre = "imx8mn-venice-gw";
+#endif
+ int model, rev_pcb, rev_bom;
+
+ model = ((som_info.model[2] - '0') * 1000)
+ + ((som_info.model[3] - '0') * 100)
+ + ((som_info.model[4] - '0') * 10)
+ + (som_info.model[5] - '0');
+ rev_pcb = tolower(get_pcb_rev(som_info.model));
+ rev_bom = get_bom_rev(som_info.model);
+
+ /* som + baseboard*/
+ if (base_info.model[0]) {
+ /* baseboard id: 7100-7199->71; 7200-7299->72; etc */
+ int base = ((base_info.model[2] - '0') * 10) + (base_info.model[3] - '0');
+ /* som id: 7000-7019->1; 7020-7039->2; etc */
+ int som = ((model % 100) / 20) * 2;
+ int rev_base_pcb = tolower(get_pcb_rev(base_info.model));
+ int rev_base_bom = get_bom_rev(base_info.model);
+
+ snprintf(buf, sz, "%s%2dxx-%dx", pre, base, som);
+ switch (level) {
+ case 0: /* full model (ie gw73xx-0x-a1a1) */
+ if (rev_base_bom)
+ snprintfcat(buf, sz, "-%c%d", rev_base_pcb, rev_base_bom);
+ else
+ snprintfcat(buf, sz, "-%c", rev_base_pcb);
+ if (rev_bom)
+ snprintfcat(buf, sz, "%c%d", rev_pcb, rev_bom);
+ else
+ snprintfcat(buf, sz, "%c", rev_pcb);
+ break;
+ case 1: /* don't care about SoM revision */
+ if (rev_base_bom)
+ snprintfcat(buf, sz, "-%c%d", rev_base_pcb, rev_base_bom);
+ else
+ snprintfcat(buf, sz, "-%c", rev_base_pcb);
+ snprintfcat(buf, sz, "xx");
+ break;
+ case 2: /* don't care about baseboard revision */
+ snprintfcat(buf, sz, "-xx");
+ if (rev_bom)
+ snprintfcat(buf, sz, "%c%d", rev_pcb, rev_bom);
+ else
+ snprintfcat(buf, sz, "%c", rev_pcb);
+ break;
+ case 3: /* don't care about SoM/baseboard revision */
+ break;
+ default:
+ return NULL;
+ }
+ } else {
+ snprintf(buf, sz, "%s%04d", pre, model);
+ switch (level) {
+ case 0: /* full model wth PCB and BOM revision first (ie gw7901-a1) */
+ if (rev_bom)
+ snprintfcat(buf, sz, "-%c%d", rev_pcb, rev_bom);
+ else
+ snprintfcat(buf, sz, "-%c", rev_pcb);
+ break;
+ case 1: /* don't care about BOM revision */
+ snprintfcat(buf, sz, "-%c", rev_pcb);
+ break;
+ case 2: /* don't care about PCB or BOM revision */
+ break;
+ default:
+ return NULL;
+ }
+ }
+
+ return buf;
+}
+
+static int eeprom_info(bool verbose)
+{
+ printf("Model : %s\n", venice_model);
+ printf("Serial : %d\n", som_info.serial);
+ printf("MFGDate : %02x-%02x-%02x%02x\n",
+ som_info.mfgdate[0], som_info.mfgdate[1],
+ som_info.mfgdate[2], som_info.mfgdate[3]);
+ if (base_info.model[0] && verbose) {
+ printf("SOM : %s %d %02x-%02x-%02x%02x\n",
+ som_info.model, som_info.serial,
+ som_info.mfgdate[0], som_info.mfgdate[1],
+ som_info.mfgdate[2], som_info.mfgdate[3]);
+ printf("BASE : %s %d %02x-%02x-%02x%02x\n",
+ base_info.model, base_info.serial,
+ base_info.mfgdate[0], base_info.mfgdate[1],
+ base_info.mfgdate[2], base_info.mfgdate[3]);
+ }
+
+ return 0;
+}
+
+int eeprom_init(int quiet)
+{
+ char rev_pcb;
+ int rev_bom;
+ int ret;
+
+ ret = eeprom_read(SOM_EEPROM_BUSNO, SOM_EEPROM_ADDR, 1, &som_info);
+ if (ret) {
+ puts("ERROR: Failed to probe EEPROM\n");
+ memset(&som_info, 0, sizeof(som_info));
+ return 0;
+ }
+
+ /* read optional baseboard EEPROM */
+ eeprom_read(BASEBOARD_EEPROM_BUSNO, BASEBOARD_EEPROM_ADDR, 2, &base_info);
+
+ /* create model strings */
+ if (base_info.model[0]) {
+ sprintf(venice_model, "GW%c%c%c%c-%c%c-",
+ som_info.model[2], /* family */
+ base_info.model[3], /* baseboard */
+ base_info.model[4], base_info.model[5], /* subload of baseboard */
+ som_info.model[4], som_info.model[5]); /* last 2digits of SOM */
+
+ /* baseboard revision */
+ rev_pcb = get_pcb_rev(base_info.model);
+ rev_bom = get_bom_rev(base_info.model);
+ if (rev_bom)
+ sprintf(venice_model + strlen(venice_model), "%c%d", rev_pcb, rev_bom);
+ else
+ sprintf(venice_model + strlen(venice_model), "%c", rev_pcb);
+ /* som revision */
+ rev_pcb = get_pcb_rev(som_info.model);
+ rev_bom = get_bom_rev(som_info.model);
+ if (rev_bom)
+ sprintf(venice_model + strlen(venice_model), "%c%d", rev_pcb, rev_bom);
+ else
+ sprintf(venice_model + strlen(venice_model), "%c", rev_pcb);
+ } else {
+ strcpy(venice_model, som_info.model);
+ }
+ venice_serial = som_info.serial;
+
+ if (!quiet)
+ eeprom_info(false);
+
+ return (16 << som_info.sdram_size);
+}
+
+void board_gsc_info(void)
+{
+ eeprom_info(true);
+}
+
+const char *eeprom_get_model(void)
+{
+ return venice_model;
+}
+
+u32 eeprom_get_serial(void)
+{
+ return venice_serial;
+}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright 2021 Gateworks Corporation
- */
-
-#include <common.h>
-#include <command.h>
-#include <hang.h>
-#include <hexdump.h>
-#include <i2c.h>
-#include <linux/delay.h>
-#include <dm/uclass.h>
-
-#include "gsc.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-struct venice_board_info som_info;
-struct venice_board_info base_info;
-char venice_model[32];
-uint32_t venice_serial;
-
-/* return a mac address from EEPROM info */
-int gsc_getmac(int index, uint8_t *address)
-{
- int i, j;
- u32 maclow, machigh;
- u64 mac;
-
- j = 0;
- if (som_info.macno) {
- maclow = som_info.mac[5];
- maclow |= som_info.mac[4] << 8;
- maclow |= som_info.mac[3] << 16;
- maclow |= som_info.mac[2] << 24;
- machigh = som_info.mac[1];
- machigh |= som_info.mac[0] << 8;
- mac = machigh;
- mac <<= 32;
- mac |= maclow;
- for (i = 0; i < som_info.macno; i++, j++) {
- if (index == j)
- goto out;
- }
- }
-
- maclow = base_info.mac[5];
- maclow |= base_info.mac[4] << 8;
- maclow |= base_info.mac[3] << 16;
- maclow |= base_info.mac[2] << 24;
- machigh = base_info.mac[1];
- machigh |= base_info.mac[0] << 8;
- mac = machigh;
- mac <<= 32;
- mac |= maclow;
- for (i = 0; i < base_info.macno; i++, j++) {
- if (index == j)
- goto out;
- }
-
- return -EINVAL;
-
-out:
- mac += i;
- address[0] = (mac >> 40) & 0xff;
- address[1] = (mac >> 32) & 0xff;
- address[2] = (mac >> 24) & 0xff;
- address[3] = (mac >> 16) & 0xff;
- address[4] = (mac >> 8) & 0xff;
- address[5] = (mac >> 0) & 0xff;
-
- return 0;
-}
-
-/* System Controller registers */
-enum {
- GSC_SC_CTRL0 = 0,
- GSC_SC_CTRL1 = 1,
- GSC_SC_STATUS = 10,
- GSC_SC_FWCRC = 12,
- GSC_SC_FWVER = 14,
- GSC_SC_WP = 15,
- GSC_SC_RST_CAUSE = 16,
- GSC_SC_THERM_PROTECT = 19,
-};
-
-/* System Controller Control1 bits */
-enum {
- GSC_SC_CTRL1_WDTIME = 4, /* 1 = 60s timeout, 0 = 30s timeout */
- GSC_SC_CTRL1_WDEN = 5, /* 1 = enable, 0 = disable */
- GSC_SC_CTRL1_BOOT_CHK = 6, /* 1 = enable alt boot check */
- GSC_SC_CTRL1_WDDIS = 7, /* 1 = disable boot watchdog */
-};
-
-/* System Controller Interrupt bits */
-enum {
- GSC_SC_IRQ_PB = 0, /* Pushbutton switch */
- GSC_SC_IRQ_SECURE = 1, /* Secure Key erase operation complete */
- GSC_SC_IRQ_EEPROM_WP = 2, /* EEPROM write violation */
- GSC_SC_IRQ_GPIO = 4, /* GPIO change */
- GSC_SC_IRQ_TAMPER = 5, /* Tamper detect */
- GSC_SC_IRQ_WATCHDOG = 6, /* Watchdog trip */
- GSC_SC_IRQ_PBLONG = 7, /* Pushbutton long hold */
-};
-
-/* System Controller WP bits */
-enum {
- GSC_SC_WP_ALL = 0, /* Write Protect All EEPROM regions */
- GSC_SC_WP_BOARDINFO = 1, /* Write Protect Board Info region */
-};
-
-/* System Controller Reset Cause */
-enum {
- GSC_SC_RST_CAUSE_VIN = 0,
- GSC_SC_RST_CAUSE_PB = 1,
- GSC_SC_RST_CAUSE_WDT = 2,
- GSC_SC_RST_CAUSE_CPU = 3,
- GSC_SC_RST_CAUSE_TEMP_LOCAL = 4,
- GSC_SC_RST_CAUSE_TEMP_REMOTE = 5,
- GSC_SC_RST_CAUSE_SLEEP = 6,
- GSC_SC_RST_CAUSE_BOOT_WDT = 7,
- GSC_SC_RST_CAUSE_BOOT_WDT_MAN = 8,
- GSC_SC_RST_CAUSE_SOFT_PWR = 9,
- GSC_SC_RST_CAUSE_MAX = 10,
-};
-
-#include <dm/device.h>
-static struct udevice *gsc_get_dev(int busno, int slave)
-{
- struct udevice *dev, *bus;
- int ret;
-
- ret = uclass_get_device_by_seq(UCLASS_I2C, busno, &bus);
- if (ret) {
- printf("GSC : failed I2C%d probe: %d\n", busno, ret);
- return NULL;
- }
- ret = dm_i2c_probe(bus, slave, 0, &dev);
- if (ret)
- return NULL;
-
- return dev;
-}
-
-static int gsc_read_eeprom(int bus, int slave, int alen, struct venice_board_info *info)
-{
- int i;
- int chksum;
- unsigned char *buf = (unsigned char *)info;
- struct udevice *dev;
- int ret;
-
- /* probe device */
- dev = gsc_get_dev(bus, slave);
- if (!dev) {
- if (slave == GSC_EEPROM_ADDR)
- puts("ERROR: Failed to probe EEPROM\n");
- return -ENODEV;
- }
-
- /* read eeprom config section */
- memset(info, 0, sizeof(*info));
- ret = i2c_set_chip_offset_len(dev, alen);
- if (ret) {
- puts("EEPROM: Failed to set alen\n");
- return ret;
- }
- ret = dm_i2c_read(dev, 0x00, buf, sizeof(*info));
- if (ret) {
- if (slave == GSC_EEPROM_ADDR)
- printf("EEPROM: Failed to read EEPROM\n");
- return ret;
- }
-
- /* validate checksum */
- for (chksum = 0, i = 0; i < (int)sizeof(*info) - 2; i++)
- chksum += buf[i];
- if ((info->chksum[0] != chksum >> 8) ||
- (info->chksum[1] != (chksum & 0xff))) {
- printf("EEPROM: I2C%d@0x%02x: Invalid Checksum\n", bus, slave);
- print_hex_dump_bytes("", DUMP_PREFIX_NONE, buf, sizeof(*info));
- memset(info, 0, sizeof(*info));
- return -EINVAL;
- }
-
- /* sanity check valid model */
- if (info->model[0] != 'G' || info->model[1] != 'W') {
- printf("EEPROM: I2C%d@0x%02x: Invalid Model in EEPROM\n", bus, slave);
- print_hex_dump_bytes("", DUMP_PREFIX_NONE, buf, sizeof(*info));
- memset(info, 0, sizeof(*info));
- return -EINVAL;
- }
-
- return 0;
-}
-
-static const char *gsc_get_rst_cause(struct udevice *dev)
-{
- static char str[64];
- static const char * const names[] = {
- "VIN",
- "PB",
- "WDT",
- "CPU",
- "TEMP_L",
- "TEMP_R",
- "SLEEP",
- "BOOT_WDT1",
- "BOOT_WDT2",
- "SOFT_PWR",
- };
- unsigned char reg;
-
- /* reset cause */
- str[0] = 0;
- if (!dm_i2c_read(dev, GSC_SC_RST_CAUSE, ®, 1)) {
- if (reg < ARRAY_SIZE(names))
- sprintf(str, "%s", names[reg]);
- else
- sprintf(str, "0x%02x", reg);
- }
-
- /* thermal protection */
- if (!dm_i2c_read(dev, GSC_SC_THERM_PROTECT, ®, 1)) {
- strcat(str, " Thermal Protection ");
- if (reg & BIT(0))
- strcat(str, "Enabled");
- else
- strcat(str, "Disabled");
- }
-
- return str;
-}
-
-/* display hardware monitor ADC channels */
-int gsc_hwmon(void)
-{
- const void *fdt = gd->fdt_blob;
- struct udevice *dev;
- int node, reg, mode, len, val, offset;
- const char *label;
- u8 buf[2];
- int ret;
-
- node = fdt_node_offset_by_compatible(fdt, -1, "gw,gsc-adc");
- if (node <= 0)
- return node;
-
- /* probe device */
- dev = gsc_get_dev(GSC_BUSNO, GSC_HWMON_ADDR);
- if (!dev) {
- puts("ERROR: Failed to probe GSC HWMON\n");
- return -ENODEV;
- }
-
- /* iterate over hwmon nodes */
- node = fdt_first_subnode(fdt, node);
- while (node > 0) {
- reg = fdtdec_get_int(fdt, node, "reg", -1);
- mode = fdtdec_get_int(fdt, node, "gw,mode", -1);
- offset = fdtdec_get_int(fdt, node, "gw,voltage-offset-microvolt", 0);
- label = fdt_stringlist_get(fdt, node, "label", 0, NULL);
-
- if ((reg == -1) || (mode == -1) || !label)
- printf("invalid dt:%s\n", fdt_get_name(fdt, node, NULL));
-
- memset(buf, 0, sizeof(buf));
- ret = dm_i2c_read(dev, reg, buf, sizeof(buf));
- if (ret) {
- printf("i2c error: %d\n", ret);
- continue;
- }
- val = buf[0] | buf[1] << 8;
- if (val >= 0) {
- const u32 *div;
- int r[2];
-
- switch (mode) {
- case 0: /* temperature (C*10) */
- if (val > 0x8000)
- val -= 0xffff;
- printf("%-8s: %d.%ldC\n", label, val / 10, abs(val % 10));
- break;
- case 1: /* prescaled voltage */
- if (val != 0xffff)
- printf("%-8s: %d.%03dV\n", label, val / 1000, val % 1000);
- break;
- case 2: /* scaled based on ref volt and resolution */
- val *= 2500;
- val /= 1 << 12;
-
- /* apply pre-scaler voltage divider */
- div = fdt_getprop(fdt, node, "gw,voltage-divider-ohms", &len);
- if (div && (len == sizeof(uint32_t) * 2)) {
- r[0] = fdt32_to_cpu(div[0]);
- r[1] = fdt32_to_cpu(div[1]);
- if (r[0] && r[1]) {
- val *= (r[0] + r[1]);
- val /= r[1];
- }
- }
-
- /* adjust by offset */
- val += (offset / 1000);
-
- printf("%-8s: %d.%03dV\n", label, val / 1000, val % 1000);
- break;
- }
- }
- node = fdt_next_subnode(fdt, node);
- }
-
- return 0;
-}
-
-/* determine BOM revision from model */
-int get_bom_rev(const char *str)
-{
- int rev_bom = 0;
- int i;
-
- for (i = strlen(str) - 1; i > 0; i--) {
- if (str[i] == '-')
- break;
- if (str[i] >= '1' && str[i] <= '9') {
- rev_bom = str[i] - '0';
- break;
- }
- }
- return rev_bom;
-}
-
-/* determine PCB revision from model */
-char get_pcb_rev(const char *str)
-{
- char rev_pcb = 'A';
- int i;
-
- for (i = strlen(str) - 1; i > 0; i--) {
- if (str[i] == '-')
- break;
- if (str[i] >= 'A') {
- rev_pcb = str[i];
- break;
- }
- }
- return rev_pcb;
-}
-
-/*
- * get dt name based on model and detail level:
- *
- * For boards that are a combination of a SoM plus a Baseboard:
- * Venice SoM part numbers are GW70xx where xx is:
- * 7000-7019: same PCB with som dt of '0x'
- * 7020-7039: same PCB with som dt of '2x'
- * 7040-7059: same PCB with som dt of '4x'
- * 7060-7079: same PCB with som dt of '6x'
- * 7080-7099: same PCB with som dt of '8x'
- * Venice Baseboard part numbers are GW7xxx where xxx is:
- * 7100-7199: same PCB with base dt of '71xx'
- * 7200-7299: same PCB with base dt of '72xx'
- * 7300-7399: same PCB with base dt of '73xx'
- * 7400-7499: same PCB with base dt of '74xx'
- * 7500-7599: same PCB with base dt of '75xx'
- * 7600-7699: same PCB with base dt of '76xx'
- * 7700-7799: same PCB with base dt of '77xx'
- * 7800-7899: same PCB with base dt of '78xx'
- * DT name is comprised of:
- * gw<base dt>-<som dt>-[base-pcb-rev][base-bom-rev][som-pcb-rev][som-bom-rev]
- *
- * For board models from 7900-7999 each PCB is unique with its own dt:
- * DT name is comprised:
- * gw<model>-[pcb-rev][bom-rev]
- *
- */
-#define snprintfcat(dest, sz, fmt, ...) \
- snprintf((dest) + strlen(dest), (sz) - strlen(dest), fmt, ##__VA_ARGS__)
-const char *gsc_get_dtb_name(int level, char *buf, int sz)
-{
-#ifdef CONFIG_IMX8MM
- const char *pre = "imx8mm-venice-gw";
-#else
- const char *pre = "imx8mn-venice-gw";
-#endif
- int model, rev_pcb, rev_bom;
-
- model = ((som_info.model[2] - '0') * 1000)
- + ((som_info.model[3] - '0') * 100)
- + ((som_info.model[4] - '0') * 10)
- + (som_info.model[5] - '0');
- rev_pcb = tolower(get_pcb_rev(som_info.model));
- rev_bom = get_bom_rev(som_info.model);
-
- /* som + baseboard*/
- if (base_info.model[0]) {
- /* baseboard id: 7100-7199->71; 7200-7299->72; etc */
- int base = ((base_info.model[2] - '0') * 10) + (base_info.model[3] - '0');
- /* som id: 7000-7019->1; 7020-7039->2; etc */
- int som = ((model % 100) / 20) * 2;
- int rev_base_pcb = tolower(get_pcb_rev(base_info.model));
- int rev_base_bom = get_bom_rev(base_info.model);
-
- snprintf(buf, sz, "%s%2dxx-%dx", pre, base, som);
- switch (level) {
- case 0: /* full model (ie gw73xx-0x-a1a1) */
- if (rev_base_bom)
- snprintfcat(buf, sz, "-%c%d", rev_base_pcb, rev_base_bom);
- else
- snprintfcat(buf, sz, "-%c", rev_base_pcb);
- if (rev_bom)
- snprintfcat(buf, sz, "%c%d", rev_pcb, rev_bom);
- else
- snprintfcat(buf, sz, "%c", rev_pcb);
- break;
- case 1: /* don't care about SoM revision */
- if (rev_base_bom)
- snprintfcat(buf, sz, "-%c%d", rev_base_pcb, rev_base_bom);
- else
- snprintfcat(buf, sz, "-%c", rev_base_pcb);
- snprintfcat(buf, sz, "xx");
- break;
- case 2: /* don't care about baseboard revision */
- snprintfcat(buf, sz, "-xx");
- if (rev_bom)
- snprintfcat(buf, sz, "%c%d", rev_pcb, rev_bom);
- else
- snprintfcat(buf, sz, "%c", rev_pcb);
- break;
- case 3: /* don't care about SoM/baseboard revision */
- break;
- default:
- return NULL;
- }
- } else {
- snprintf(buf, sz, "%s%04d", pre, model);
- switch (level) {
- case 0: /* full model wth PCB and BOM revision first (ie gw7901-a1) */
- if (rev_bom)
- snprintfcat(buf, sz, "-%c%d", rev_pcb, rev_bom);
- else
- snprintfcat(buf, sz, "-%c", rev_pcb);
- break;
- case 1: /* don't care about BOM revision */
- snprintfcat(buf, sz, "-%c", rev_pcb);
- break;
- case 2: /* don't care about PCB or BOM revision */
- break;
- default:
- return NULL;
- }
- }
-
- return buf;
-}
-
-static int gsc_read(void)
-{
- char rev_pcb;
- int rev_bom;
- int ret;
-
- ret = gsc_read_eeprom(GSC_BUSNO, GSC_EEPROM_ADDR, 1, &som_info);
- if (ret) {
- memset(&som_info, 0, sizeof(som_info));
- return ret;
- }
-
- /* read optional baseboard EEPROM */
- gsc_read_eeprom(BASEBOARD_EEPROM_BUSNO, BASEBOARD_EEPROM_ADDR,
- 2, &base_info);
-
- /* create model strings */
- if (base_info.model[0]) {
- sprintf(venice_model, "GW%c%c%c%c-%c%c-",
- som_info.model[2], /* family */
- base_info.model[3], /* baseboard */
- base_info.model[4], base_info.model[5], /* subload of baseboard */
- som_info.model[4], som_info.model[5]); /* last 2digits of SOM */
-
- /* baseboard revision */
- rev_pcb = get_pcb_rev(base_info.model);
- rev_bom = get_bom_rev(base_info.model);
- if (rev_bom)
- sprintf(venice_model + strlen(venice_model), "%c%d", rev_pcb, rev_bom);
- else
- sprintf(venice_model + strlen(venice_model), "%c", rev_pcb);
- /* som revision */
- rev_pcb = get_pcb_rev(som_info.model);
- rev_bom = get_bom_rev(som_info.model);
- if (rev_bom)
- sprintf(venice_model + strlen(venice_model), "%c%d", rev_pcb, rev_bom);
- else
- sprintf(venice_model + strlen(venice_model), "%c", rev_pcb);
- } else {
- strcpy(venice_model, som_info.model);
- }
- venice_serial = som_info.serial;
-
- return 0;
-}
-
-static int gsc_info(int verbose)
-{
- struct udevice *dev;
- unsigned char buf[16];
-
- printf("Model : %s\n", venice_model);
- printf("Serial : %d\n", som_info.serial);
- printf("MFGDate : %02x-%02x-%02x%02x\n",
- som_info.mfgdate[0], som_info.mfgdate[1],
- som_info.mfgdate[2], som_info.mfgdate[3]);
- if (base_info.model[0] && verbose > 1) {
- printf("SOM : %s %d %02x-%02x-%02x%02x\n",
- som_info.model, som_info.serial,
- som_info.mfgdate[0], som_info.mfgdate[1],
- som_info.mfgdate[2], som_info.mfgdate[3]);
- printf("BASE : %s %d %02x-%02x-%02x%02x\n",
- base_info.model, base_info.serial,
- base_info.mfgdate[0], base_info.mfgdate[1],
- base_info.mfgdate[2], base_info.mfgdate[3]);
- }
-
- /* Display RTC */
- puts("RTC : ");
- dev = gsc_get_dev(GSC_BUSNO, GSC_RTC_ADDR);
- if (!dev) {
- puts("Failed to probe GSC RTC\n");
- } else {
- dm_i2c_read(dev, 0, buf, 6);
- printf("%d\n", buf[0] | buf[1] << 8 | buf[2] << 16 | buf[3] << 24);
- }
-
- /* Display hwmon */
- gsc_hwmon();
-
- return 0;
-}
-
-int gsc_init(int quiet)
-{
- unsigned char buf[16];
- struct udevice *dev;
- int ret;
-
- /*
- * 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.
- */
-#ifdef CONFIG_IMX8MN
- // TODO:
- // IMX8MN boots quicker than IMX8MM and exposes issue
- // where because GSC I2C state machine isn't running and its
- // SCL/SDA are driven low spams i2c errors
- //
- // Put a loop here that somehow waits for I2C CLK/DAT to be high
- mdelay(40);
-#endif
- while (1) {
- /* probe device */
- dev = gsc_get_dev(GSC_BUSNO, GSC_SC_ADDR);
- if (dev)
- break;
- mdelay(1);
- }
-
- ret = dm_i2c_read(dev, 0, buf, sizeof(buf));
- if (ret) {
- puts("ERROR: Failed reading GSC\n");
- return ret;
- }
- gsc_read();
-
- /* banner */
- if (!quiet) {
- printf("GSC : v%d 0x%04x", buf[GSC_SC_FWVER],
- buf[GSC_SC_FWCRC] | buf[GSC_SC_FWCRC + 1] << 8);
- printf(" RST:%s", gsc_get_rst_cause(dev));
- printf("\n");
- gsc_info(1);
- }
-
- if (ret)
- hang();
-
- return (16 << som_info.sdram_size);
-}
-
-const char *gsc_get_model(void)
-{
- return venice_model;
-}
-
-uint32_t gsc_get_serial(void)
-{
- return venice_serial;
-}
-
-#if !(IS_ENABLED(CONFIG_SPL_BUILD))
-static int gsc_sleep(unsigned long secs)
-{
- unsigned char reg;
- struct udevice *dev;
- int ret;
-
- /* probe device */
- dev = gsc_get_dev(GSC_BUSNO, GSC_SC_ADDR);
- if (!dev)
- return -ENODEV;
-
- printf("GSC Sleeping for %ld seconds\n", secs);
- reg = (secs >> 24) & 0xff;
- ret = dm_i2c_write(dev, 9, ®, 1);
- if (ret)
- goto err;
- reg = (secs >> 16) & 0xff;
- ret = dm_i2c_write(dev, 8, ®, 1);
- if (ret)
- goto err;
- reg = (secs >> 8) & 0xff;
- ret = dm_i2c_write(dev, 7, ®, 1);
- if (ret)
- goto err;
- reg = secs & 0xff;
- ret = dm_i2c_write(dev, 6, ®, 1);
- if (ret)
- goto err;
- ret = dm_i2c_read(dev, GSC_SC_CTRL1, ®, 1);
- if (ret)
- goto err;
- reg |= (1 << 2);
- ret = dm_i2c_write(dev, GSC_SC_CTRL1, ®, 1);
- if (ret)
- goto err;
- reg &= ~(1 << 2);
- reg |= 0x3;
- ret = dm_i2c_write(dev, GSC_SC_CTRL1, ®, 1);
- if (ret)
- goto err;
-
- return 0;
-
-err:
- printf("i2c error\n");
- return ret;
-}
-
-static int gsc_boot_wd_disable(void)
-{
- u8 reg;
- struct udevice *dev;
- int ret;
-
- /* probe device */
- dev = gsc_get_dev(GSC_BUSNO, GSC_SC_ADDR);
- if (!dev)
- return -ENODEV;
-
- ret = dm_i2c_read(dev, GSC_SC_CTRL1, ®, 1);
- if (ret)
- goto err;
- reg |= (1 << GSC_SC_CTRL1_WDDIS);
- reg &= ~(1 << GSC_SC_CTRL1_BOOT_CHK);
- ret = dm_i2c_write(dev, GSC_SC_CTRL1, ®, 1);
- if (ret)
- goto err;
- puts("GSC : boot watchdog disabled\n");
-
- return 0;
-
-err:
- printf("i2c error");
- return ret;
-}
-
-static int do_gsc(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
-{
- if (argc < 2)
- return gsc_info(2);
-
- if (strcasecmp(argv[1], "sleep") == 0) {
- if (argc < 3)
- return CMD_RET_USAGE;
- if (!gsc_sleep(dectoul(argv[2], NULL)))
- return CMD_RET_SUCCESS;
- } else if (strcasecmp(argv[1], "hwmon") == 0) {
- if (!gsc_hwmon())
- return CMD_RET_SUCCESS;
- } else if (strcasecmp(argv[1], "wd-disable") == 0) {
- if (!gsc_boot_wd_disable())
- return CMD_RET_SUCCESS;
- }
-
- return CMD_RET_USAGE;
-}
-
-U_BOOT_CMD(gsc, 4, 1, do_gsc, "Gateworks System Controller",
- "[sleep <secs>]|[hwmon]|[wd-disable]\n");
-#endif
projects / u-boot.git / commitdiff