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Message-Id: <20240117-coreboot-mod-defconfig-v3-2-049565a27bba@collabora.com>
Date: Wed, 17 Jan 2024 16:03:23 -0300
From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
To: Tzung-Bi Shih <tzungbi@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>, Brian Norris <briannorris@...omium.org>,
Julius Werner <jwerner@...omium.org>,
Masahiro Yamada <masahiroy@...nel.org>,
Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas@...sle.eu>,
Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, kernel@...labora.com,
chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org,
linux-kbuild@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Nícolas F. R. A. Prado <nfraprado@...labora.com>
Subject: [PATCH v3 2/4] firmware: coreboot: Generate aliases for coreboot
modules
Generate aliases for coreboot modules to allow automatic module probing.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
---
include/linux/mod_devicetable.h | 8 ++++++++
scripts/mod/devicetable-offsets.c | 3 +++
scripts/mod/file2alias.c | 10 ++++++++++
3 files changed, 21 insertions(+)
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index f458469c5ce5..24e0dcfde809 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -960,4 +960,12 @@ struct vchiq_device_id {
char name[32];
};
+/**
+ * struct coreboot_device_id - Identifies a coreboot table entry
+ * @tag: tag ID
+ */
+struct coreboot_device_id {
+ __u32 tag;
+};
+
#endif /* LINUX_MOD_DEVICETABLE_H */
diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
index e91a3c38143b..518200813d4e 100644
--- a/scripts/mod/devicetable-offsets.c
+++ b/scripts/mod/devicetable-offsets.c
@@ -274,5 +274,8 @@ int main(void)
DEVID(vchiq_device_id);
DEVID_FIELD(vchiq_device_id, name);
+ DEVID(coreboot_device_id);
+ DEVID_FIELD(coreboot_device_id, tag);
+
return 0;
}
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 4829680a0a6d..5d1c61fa5a55 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -1494,6 +1494,15 @@ static int do_vchiq_entry(const char *filename, void *symval, char *alias)
return 1;
}
+/* Looks like: coreboot:tN */
+static int do_coreboot_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD(symval, coreboot_device_id, tag);
+ sprintf(alias, "coreboot:t%08X", tag);
+
+ return 1;
+}
+
/* Does namelen bytes of name exactly match the symbol? */
static bool sym_is(const char *name, unsigned namelen, const char *symbol)
{
@@ -1575,6 +1584,7 @@ static const struct devtable devtable[] = {
{"ishtp", SIZE_ishtp_device_id, do_ishtp_entry},
{"cdx", SIZE_cdx_device_id, do_cdx_entry},
{"vchiq", SIZE_vchiq_device_id, do_vchiq_entry},
+ {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry},
};
/* Create MODULE_ALIAS() statements.
--
2.43.0
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