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// SPDX-License-Identifier: GPL-2.0+
/*
* HPE GXP sysinfo driver
*
* Copyright (C) 2026 9elements GmbH
*/
#include <dm.h>
#include <nvmem.h>
#include <sysinfo.h>
#include <dm/device_compat.h>
#define GXP_SYSINFO_MODEL "GXP"
#define GXP_SYSINFO_MANUFACTURER "Hewlett Packard Enterprise"
/**
* struct gxp_sysinfo_priv - GXP sysinfo private data
* @serial_cell: NVMEM cell for system serial number
* @part_cell: NVMEM cell for system part number
* @pca_serial_cell: NVMEM cell for baseboard (PCA) serial number
* @pca_part_cell: NVMEM cell for baseboard (PCA) part number
*/
struct gxp_sysinfo_priv {
struct nvmem_cell serial_cell;
struct nvmem_cell part_cell;
struct nvmem_cell pca_serial_cell;
struct nvmem_cell pca_part_cell;
};
static int gxp_sysinfo_detect(struct udevice *dev)
{
return 0;
}
static int gxp_sysinfo_get_str(struct udevice *dev, int id, size_t size,
char *val)
{
struct gxp_sysinfo_priv *priv = dev_get_priv(dev);
struct nvmem_cell *cell;
int ret;
switch (id) {
case SYSID_BOARD_MODEL:
strlcpy(val, GXP_SYSINFO_MODEL, size);
return 0;
case SYSID_BOARD_MANUFACTURER:
strlcpy(val, GXP_SYSINFO_MANUFACTURER, size);
return 0;
case SYSID_SM_SYSTEM_SERIAL:
if (!priv->serial_cell.nvmem)
return -ENODEV;
cell = &priv->serial_cell;
break;
case SYSID_SM_SYSTEM_PRODUCT:
if (!priv->part_cell.nvmem)
return -ENODEV;
cell = &priv->part_cell;
break;
case SYSID_SM_BASEBOARD_SERIAL:
if (!priv->pca_serial_cell.nvmem)
return -ENODEV;
cell = &priv->pca_serial_cell;
break;
case SYSID_SM_BASEBOARD_PRODUCT:
if (!priv->pca_part_cell.nvmem)
return -ENODEV;
cell = &priv->pca_part_cell;
break;
default:
return -EINVAL;
}
if (size <= cell->size)
return -ENOSPC;
ret = nvmem_cell_read(cell, val, cell->size);
if (ret)
return ret;
val[cell->size] = '\0';
return 0;
}
static int gxp_sysinfo_probe(struct udevice *dev)
{
struct gxp_sysinfo_priv *priv = dev_get_priv(dev);
nvmem_cell_get_by_name(dev, "serial-number", &priv->serial_cell);
nvmem_cell_get_by_name(dev, "part-number", &priv->part_cell);
nvmem_cell_get_by_name(dev, "pca-serial-number", &priv->pca_serial_cell);
nvmem_cell_get_by_name(dev, "pca-part-number", &priv->pca_part_cell);
return 0;
}
static const struct sysinfo_ops gxp_sysinfo_ops = {
.detect = gxp_sysinfo_detect,
.get_str = gxp_sysinfo_get_str,
};
static const struct udevice_id gxp_sysinfo_ids[] = {
{ .compatible = "hpe,gxp-sysinfo" },
{ }
};
U_BOOT_DRIVER(gxp_sysinfo) = {
.name = "gxp_sysinfo",
.id = UCLASS_SYSINFO,
.of_match = gxp_sysinfo_ids,
.probe = gxp_sysinfo_probe,
.ops = &gxp_sysinfo_ops,
.priv_auto = sizeof(struct gxp_sysinfo_priv),
.flags = DM_FLAG_PRE_RELOC,
};
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