sysinfo: rcar3: Add Renesas R-Car Gen3 sysinfo driver
The Renesas R-Car Gen3 development kits contain board ID EEPROM. This driver parses out the board ID and revision out of that EEPROM and exports it e.g. for the board-info print on boot. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Sean Anderson <sean.anderson@seco.com> Cc: Simon Glass <sjg@chromium.org>
This commit is contained in:
Marek Vasut
parent
dd3dfa50d8
commit
85cd345dc8
3 changed files with 205 additions and 0 deletions
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@ -17,6 +17,13 @@ config SYSINFO_GAZERBEAM
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help
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Support querying device information for the gdsys Gazerbeam board.
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config SYSINFO_RCAR3
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bool "Enable sysinfo driver for the Renesas R-Car Gen3"
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depends on RCAR_GEN3 && I2C_EEPROM
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default y if RCAR_GEN3
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help
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Support querying SoC version information for Renesas R-Car Gen3.
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config SYSINFO_SANDBOX
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bool "Enable sysinfo driver for the Sandbox board"
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help
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@ -5,5 +5,6 @@
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obj-y += sysinfo-uclass.o
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obj-$(CONFIG_SYSINFO_GAZERBEAM) += gazerbeam.o
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obj-$(CONFIG_SYSINFO_GPIO) += gpio.o
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obj-$(CONFIG_SYSINFO_RCAR3) += rcar3.o
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obj-$(CONFIG_SYSINFO_SANDBOX) += sandbox.o
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obj-$(CONFIG_SYSINFO_SMBIOS) += smbios.o
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197
drivers/sysinfo/rcar3.c
Normal file
197
drivers/sysinfo/rcar3.c
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@ -0,0 +1,197 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2021 Marek Vasut <marek.vasut+renesas@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <i2c_eeprom.h>
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#include <log.h>
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#include <sysinfo.h>
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#define BOARD_CODE_MASK 0xF8
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#define BOARD_REV_MASK 0x07
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#define BOARD_CODE_SHIFT 0x03
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#define BOARD_SALVATOR_X 0x0
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#define BOARD_KRIEK 0x1
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#define BOARD_STARTER_KIT 0x2
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#define BOARD_SALVATOR_XS 0x4
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#define BOARD_EBISU 0x8
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#define BOARD_STARTER_KIT_PRE 0xB
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#define BOARD_EBISU_4D 0xD
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#define BOARD_DRAAK 0xE
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#define BOARD_EAGLE 0xF
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/**
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* struct sysinfo_rcar_priv - sysinfo private data
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* @boardname: board model and revision
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* @val: board ID value from eeprom
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*/
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struct sysinfo_rcar_priv {
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char boardmodel[64];
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u8 val;
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};
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static int sysinfo_rcar_detect(struct udevice *dev)
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{
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struct sysinfo_rcar_priv *priv = dev_get_priv(dev);
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return priv->val == 0xff;
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}
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static int sysinfo_rcar_get_str(struct udevice *dev, int id, size_t size, char *val)
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{
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struct sysinfo_rcar_priv *priv = dev_get_priv(dev);
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switch (id) {
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case SYSINFO_ID_BOARD_MODEL:
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strncpy(val, priv->boardmodel, size);
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val[size - 1] = '\0';
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return 0;
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default:
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return -EINVAL;
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};
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}
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static const struct sysinfo_ops sysinfo_rcar_ops = {
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.detect = sysinfo_rcar_detect,
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.get_str = sysinfo_rcar_get_str,
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};
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static void sysinfo_rcar_parse(struct sysinfo_rcar_priv *priv)
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{
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const u8 board_id = (priv->val & BOARD_CODE_MASK) >> BOARD_CODE_SHIFT;
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const u8 board_rev = priv->val & BOARD_REV_MASK;
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bool salvator_xs = false;
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bool ebisu_4d = false;
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char rev_major = '?';
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char rev_minor = '?';
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switch (board_id) {
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case BOARD_SALVATOR_XS:
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salvator_xs = true;
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fallthrough;
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case BOARD_SALVATOR_X:
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if (!(board_rev & ~1)) { /* Only rev 0 and 1 is valid */
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rev_major = '1';
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rev_minor = '0' + (board_rev & BIT(0));
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}
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snprintf(priv->boardmodel, sizeof(priv->boardmodel),
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"Renesas Salvator-X%s board rev %c.%c",
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salvator_xs ? "S" : "", rev_major, rev_minor);
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return;
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case BOARD_STARTER_KIT:
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if (!(board_rev & ~1)) { /* Only rev 0 and 1 is valid */
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rev_major = (board_rev & BIT(0)) ? '3' : '1';
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rev_minor = '0';
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}
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snprintf(priv->boardmodel, sizeof(priv->boardmodel),
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"Renesas Starter Kit board rev %c.%c",
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rev_major, rev_minor);
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return;
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case BOARD_STARTER_KIT_PRE:
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if (!(board_rev & ~3)) { /* Only rev 0..3 is valid */
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rev_major = (board_rev & BIT(1)) ? '2' : '1';
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rev_minor = (board_rev == 3) ? '1' : '0';
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}
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snprintf(priv->boardmodel, sizeof(priv->boardmodel),
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"Renesas Starter Kit Premier board rev %c.%c",
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rev_major, rev_minor);
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return;
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case BOARD_EAGLE:
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if (!board_rev) { /* Only rev 0 is valid */
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rev_major = '1';
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rev_minor = '0';
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}
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snprintf(priv->boardmodel, sizeof(priv->boardmodel),
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"Renesas Eagle board rev %c.%c",
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rev_major, rev_minor);
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return;
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case BOARD_EBISU_4D:
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ebisu_4d = true;
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fallthrough;
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case BOARD_EBISU:
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if (!board_rev) { /* Only rev 0 is valid */
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rev_major = '1';
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rev_minor = '0';
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}
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snprintf(priv->boardmodel, sizeof(priv->boardmodel),
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"Renesas Ebisu%s board rev %c.%c",
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ebisu_4d ? "-4D" : "", rev_major, rev_minor);
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return;
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case BOARD_DRAAK:
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if (!board_rev) { /* Only rev 0 is valid */
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rev_major = '1';
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rev_minor = '0';
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}
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snprintf(priv->boardmodel, sizeof(priv->boardmodel),
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"Renesas Draak board rev %c.%c",
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rev_major, rev_minor);
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return;
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case BOARD_KRIEK:
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if (!board_rev) { /* Only rev 0 is valid */
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rev_major = '1';
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rev_minor = '0';
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}
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snprintf(priv->boardmodel, sizeof(priv->boardmodel),
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"Renesas Kriek board rev %c.%c",
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rev_major, rev_minor);
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return;
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default:
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snprintf(priv->boardmodel, sizeof(priv->boardmodel),
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"Renesas -Unknown- board rev ?.?");
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priv->val = 0xff;
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return;
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}
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}
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static int sysinfo_rcar_probe(struct udevice *dev)
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{
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struct sysinfo_rcar_priv *priv = dev_get_priv(dev);
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struct ofnode_phandle_args phandle_args;
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struct udevice *i2c_eeprom;
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u32 offset;
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int ret;
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offset = dev_read_u32_default(dev, "offset", 0x70);
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ret = dev_read_phandle_with_args(dev, "i2c-eeprom", NULL,
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0, 0, &phandle_args);
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if (ret) {
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debug("%s: i2c-eeprom backing device not specified\n",
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dev->name);
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return ret;
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}
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ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, phandle_args.node,
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&i2c_eeprom);
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if (ret) {
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debug("%s: could not get backing device\n", dev->name);
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return ret;
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}
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ret = i2c_eeprom_read(i2c_eeprom, offset, &priv->val, 1);
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if (ret < 0) {
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debug("%s: read failed\n", __func__);
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return -EIO;
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}
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sysinfo_rcar_parse(priv);
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return 0;
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}
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static const struct udevice_id sysinfo_rcar_ids[] = {
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{ .compatible = "renesas,rcar-sysinfo" },
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{ /* sentinel */ }
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};
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U_BOOT_DRIVER(sysinfo_rcar) = {
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.name = "sysinfo_rcar",
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.id = UCLASS_SYSINFO,
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.of_match = sysinfo_rcar_ids,
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.ops = &sysinfo_rcar_ops,
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.priv_auto = sizeof(struct sysinfo_rcar_priv),
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.probe = sysinfo_rcar_probe,
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};
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