patches/ask/dpa/0001-dpa-app-allow-xml-config-path-env-overrides.patch
raw ยท 1792 bytes
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: monok8s <monok8s@example.invalid>
Date: Sun, 10 May 2026 00:00:00 +0000
Subject: [PATCH 1/4] dpa_app: allow XML config paths to be overridden by env
Keep the vendor default XML paths, but allow deployments to override them
without patching the binary or placing board-specific XML files directly
under /etc.
Supported environment variables:
CDX_CFG_FILE
CDX_PCD_FILE
CDX_PDL_FILE
CDX_SP_FILE
This is useful for monok8s/OpenRC integration where board-specific DPA
configuration can live under a managed config directory.
---
dpa_app/dpa.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/dpa_app/dpa.c b/dpa_app/dpa.c
index 91ca1d4..960afcd 100644
--- a/dpa_app/dpa.c
+++ b/dpa_app/dpa.c
@@ -91,6 +91,34 @@ char *pcd_file = DEFAULT_PCD_FILE;
char *pdl_file = DEFAULT_PDL_FILE;
char *sp_file = DEFAULT_SP_FILE;
+static void dpa_load_env_paths(void)
+{
+ char *v;
+
+ v = getenv("CDX_CFG_FILE");
+ if (v && *v)
+ cfg_file = v;
+
+ v = getenv("CDX_PCD_FILE");
+ if (v && *v)
+ pcd_file = v;
+
+ v = getenv("CDX_PDL_FILE");
+ if (v && *v)
+ pdl_file = v;
+
+ v = getenv("CDX_SP_FILE");
+ if (v && *v)
+ sp_file = v;
+
+#ifdef DPA_C_DEBUG
+ printf("%s::cfg_file %s\n", __func__, cfg_file);
+ printf("%s::pcd_file %s\n", __func__, pcd_file);
+ printf("%s::pdl_file %s\n", __func__, pdl_file);
+ printf("%s::sp_file %s\n", __func__, sp_file);
+#endif
+}
+
//fmc model from xml files
static struct fmc_model_t cmodel;
@@ -752,6 +780,8 @@ int dpa_init(void)
char devname[64];
int retval;
+ dpa_load_env_paths();
+
//open cdx control device
sprintf(devname, "/dev/%s", CDX_CTRL_CDEVNAME);
cdx_dev_handle = open(devname, O_RDWR);
--
2.39.5