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flashrom: lspcon-i2c-spi: read active_partion and version

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Reads the active_partition and firmware version from active_partition
This commit is contained in:
Daniel Campello 2021-04-08 12:16:31 -06:00 committed by Daniel Campello
parent fe073a304d
commit 314b94b41f
1 changed files with 61 additions and 2 deletions
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63
plugins/flashrom/fu-flashrom-lspcon-i2c-spi-device.c
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@ -18,11 +18,38 @@
struct _FuFlashromLspconI2cSpiDevice {
FuFlashromDevice parent_instance;
gint bus_number;
guint8 active_partition;
};
G_DEFINE_TYPE (FuFlashromLspconI2cSpiDevice, fu_flashrom_lspcon_i2c_spi_device,
FU_TYPE_FLASHROM_DEVICE)
struct romentry {
guint32 start;
guint32 end;
gboolean included;
const gchar *name;
const gchar *file;
};
struct flashrom_layout {
struct romentry *entries;
gsize num_entries;
};
static struct romentry entries[5] = {
{ .start = 0x00002, .end = 0x00003, .included = TRUE, .name = "FLAG" },
{ .start = 0x10000, .end = 0x1ffff, .included = FALSE, .name = "PAR1" },
{ .start = 0x20000, .end = 0x2ffff, .included = FALSE, .name = "PAR2" },
{ .start = 0x15000, .end = 0x15002, .included = TRUE, .name = "VER1" },
{ .start = 0x25000, .end = 0x25002, .included = TRUE, .name = "VER2" },
};
static struct flashrom_layout layout = {
.entries = entries, .num_entries = sizeof(entries) / sizeof(entries[0])
};
static void
fu_flashrom_lspcon_i2c_spi_device_init (FuFlashromLspconI2cSpiDevice *self)
{
@ -85,12 +112,19 @@ fu_flashrom_lspcon_i2c_spi_device_open (FuDevice *device,
static gboolean
fu_flashrom_lspcon_i2c_spi_device_setup (FuDevice *device, GError **error)
{
FuFlashromLspconI2cSpiDevice *self = FU_FLASHROM_LSPCON_I2C_SPI_DEVICE (device);
FuFlashromDevice *flashrom_device = FU_FLASHROM_DEVICE (device);
const gchar *hw_id = NULL;
g_autofree gchar *vid = NULL;
g_autofree gchar *pid = NULL;
g_autofree gchar *vendor_id = NULL;
g_autofree gchar *temp = NULL;
g_autofree gchar *version = NULL;
g_autofree gchar *guid = NULL;
g_autofree gchar *contents = NULL;
struct flashrom_flashctx *flashctx = NULL;
gsize flash_size;
guint32 addr;
hw_id = fu_udev_device_get_sysfs_attr (FU_UDEV_DEVICE (device), "name", error);
if (hw_id == NULL) {
@ -110,8 +144,33 @@ fu_flashrom_lspcon_i2c_spi_device_setup (FuDevice *device, GError **error)
guid = fwupd_guid_hash_string (temp);
fu_device_add_guid (device, guid);
/* TODO: Get the real version number. */
fu_device_set_version (device, "0.0");
/* set up flashrom layout */
flashctx = fu_flashrom_device_get_flashctx (flashrom_device);
flashrom_layout_set (flashctx, &layout);
/* read the current flash contents */
fu_device_set_status (device, FWUPD_STATUS_DEVICE_READ);
flash_size = fu_flashrom_device_get_flash_size (flashrom_device);
contents = g_malloc0 (flash_size);
if (flashrom_image_read (flashctx, contents, flash_size)) {
g_set_error_literal (error, FWUPD_ERROR, FWUPD_ERROR_READ,
"failed to read flash contents");
return FALSE;
}
/* grab the active partition */
self->active_partition = contents[entries[0].start];
if (self->active_partition != 1 && self->active_partition != 2) {
g_set_error_literal (error, FWUPD_ERROR, FWUPD_ERROR_READ,
"failed to read active partition");
return FALSE;
}
/* find the current version for the active partition */
addr = entries[self->active_partition + 2].start;
version = g_strdup_printf ("%d.%d", contents[addr], contents[addr + 2]);
fu_device_set_version (device, version);
return TRUE;
}