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| author | Bastian Krause <bst@pengutronix.de> | 2019-09-27 11:59:53 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-09-30 20:39:04 +0200 |
| commit | b0ac975d9277b06081b5eff1a49d5bec19a64684 (patch) | |
| tree | c74a76cf58f3420677c1b12e6fdb704b69143d7f /drivers/nvmem | |
| parent | aada84e72e150e0d0abc835f5b2237d64499f9e0 (diff) | |
| download | barebox-b0ac975d9277b06081b5eff1a49d5bec19a64684.tar.gz barebox-b0ac975d9277b06081b5eff1a49d5bec19a64684.tar.xz | |
nvmem: ocotp: set unique id as machine-id hashable
Pass the OCOTP unique id as hashable information to machine id
generation.
Signed-off-by: Bastian Krause <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/nvmem')
| -rw-r--r-- | drivers/nvmem/ocotp.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/nvmem/ocotp.c b/drivers/nvmem/ocotp.c index 3f9f162860..79693e22e0 100644 --- a/drivers/nvmem/ocotp.c +++ b/drivers/nvmem/ocotp.c @@ -29,6 +29,8 @@ #include <regmap.h> #include <linux/clk.h> #include <mach/ocotp.h> +#include <machine_id.h> +#include <mach/ocotp-fusemap.h> #include <linux/nvmem-provider.h> /* @@ -77,6 +79,7 @@ #define MAC_OFFSET_1 (0x24 * 4) #define MAX_MAC_OFFSETS 2 #define MAC_BYTES 8 +#define UNIQUE_ID_NUM 2 enum imx_ocotp_format_mac_direction { OCOTP_HW_TO_MAC, @@ -548,6 +551,19 @@ static int imx_ocotp_read(struct device_d *dev, const int offset, void *val, return regmap_bulk_read(priv->map, offset, val, bytes); } +static void imx_ocotp_set_unique_machine_id(void) +{ + uint32_t unique_id_parts[UNIQUE_ID_NUM]; + int i; + + for (i = 0; i < UNIQUE_ID_NUM; i++) + if (imx_ocotp_read_field(OCOTP_UNIQUE_ID(i), + &unique_id_parts[i])) + return; + + machine_id_set_hashable(unique_id_parts, sizeof(unique_id_parts)); +} + static const struct nvmem_bus imx_ocotp_nvmem_bus = { .write = imx_ocotp_write, .read = imx_ocotp_read, @@ -633,6 +649,9 @@ static int imx_ocotp_probe(struct device_d *dev) ethaddr->value, ethaddr); } + if (IS_ENABLED(CONFIG_MACHINE_ID)) + imx_ocotp_set_unique_machine_id(); + imx_ocotp_init_dt(priv); dev_add_param_bool(&(priv->dev), "sense_enable", NULL, NULL, &priv->sense_enable, priv); |