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| author | Jules Maselbas <jmaselbas@kalray.eu> | 2023-07-11 11:11:23 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2023-07-26 14:21:21 +0200 |
| commit | 588bf1f37b4662a754d7da93d865bd7b8f9f9cce (patch) | |
| tree | 5a48199e8fa26ec2ad9c5974be1c8a349ae5a52c /drivers/soc | |
| parent | 91bc3a16b4bd3e27c9fb8322f4a2ab0d64cdbd33 (diff) | |
| download | barebox-588bf1f37b4662a754d7da93d865bd7b8f9f9cce.tar.gz barebox-588bf1f37b4662a754d7da93d865bd7b8f9f9cce.tar.xz | |
soc: kvx: Add board_sn global var from OTP
Add the magic variable "kvx.board_sn" that will reflect the board serial
number stored in OTP.
Signed-off-by: Jules Maselbas <jmaselbas@kalray.eu>
Link: https://lore.barebox.org/20230711091123.19111-3-jmaselbas@kalray.eu
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/kvx/kvx_socinfo.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/drivers/soc/kvx/kvx_socinfo.c b/drivers/soc/kvx/kvx_socinfo.c index 544f5dbd37..87c20c327b 100644 --- a/drivers/soc/kvx/kvx_socinfo.c +++ b/drivers/soc/kvx/kvx_socinfo.c @@ -33,9 +33,11 @@ static char *kvx_mppa_id; static char *kvx_arch_rev; +static char *kvx_board_sn; BAREBOX_MAGICVAR(kvx.arch_rev, "KVX architecture revision"); BAREBOX_MAGICVAR(kvx.mppa_id, "KVX MPPA chip id"); +BAREBOX_MAGICVAR(kvx.board_sn, "KVX board sn"); static void kvx_soc_info_read_revision(void) { @@ -123,11 +125,40 @@ static int kvx_read_mppa_id(struct device_node *socinfo) return 0; } +static int kvx_read_board_sn(struct device_node *socinfo) +{ + struct nvmem_cell *cell; + size_t len; + char *sn; + + cell = of_nvmem_cell_get(socinfo, "board_sn"); + if (IS_ERR(cell)) { + pr_debug("Fail to get board_sn cell\n"); + return PTR_ERR(cell); + } + + sn = (char *)nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); + if (IS_ERR(sn)) { + pr_debug("Fail to read board_sn\n"); + return PTR_ERR(sn); + } + + kvx_board_sn = xzalloc(len + 1); + memcpy(kvx_board_sn, sn, len); + globalvar_add_simple_string("kvx.board_sn", &kvx_board_sn); + free(sn); + + return 0; +} + static int kvx_socinfo_probe(struct device *dev) { kvx_soc_info_read_revision(); - return kvx_read_mppa_id(dev->of_node); + kvx_read_board_sn(dev->device_node); + + return kvx_read_mppa_id(dev->device_node); } static const struct of_device_id kvx_socinfo_dt_ids[] = { |