commit a3a8ca972abf4f66788b14cf65bcbc62d6f6af0c
author William A. Kennington III <wak@google.com> Tue Oct 12 23:18:52 2021 -0700
committer William A. Kennington III <wak@google.com> Wed Oct 13 22:26:38 2021 +0000
tree 2b914754523d080dd10f006a9a5f25e802dbec1c
parent fc4bbb90ad53731fdfba04d974ef1e1fb41664c8

meta-google: ipmi-fru-sh: Add method for initializing eeproms

This makes it possible to create new specifications besides the default
mapping of OF name to eeprom path. Right now this provides backward
compatability with anything that uses of_name_to_eeprom and only
provides a new explicit specifier for that specification.

Change-Id: If02d9cb392a48e0698b10644d7ade3220bde3eb5
Signed-off-by: William A. Kennington III <wak@google.com>

meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh

diff --git a/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh b/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh
index 335e0b2..3ae0f08 100644
--- a/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh
+++ b/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh
@@ -42,6 +42,32 @@
   echo "$eeproms"
 }
 
+declare -A IPMI_FRU_EEPROM_FILE=()
+
+ipmi_fru_alloc() {
+  local name="$1"
+  local -n ret="$2"
+
+  # Pick the first free index to return as the allocated entry
+  for (( ret = 0; ret < "${#IPMI_FRU_EEPROM_FILE[@]}"; ++ret )); do
+    [ -n "${IPMI_FRU_EEPROM_FILE[@]+1}" ] || break
+  done
+
+  if [[ "$name" =~ ^of-name:(.*)$ || "$name" =~ ^([^:]*)$ ]]; then
+    local ofn="${BASH_REMATCH[1]}"
+    local file
+    file="$(of_name_to_eeprom "$ofn")" || return
+    IPMI_FRU_EEPROM_FILE["$ret"]="$file"
+  else
+    echo "Invalid IPMI FRU eeprom specification: $name" >&2
+    return 1
+  fi
+}
+
+ipmi_fru_free() {
+  unset 'IPMI_FRU_EEPROM_FILE[$1]'
+}
+
 checksum() {
   local -n checksum_arr="$1"
   local checksum=0
@@ -61,7 +87,7 @@
 }
 
 read_bytes() {
-  local file="$1"
+  local file="${IPMI_FRU_EEPROM_FILE["$1"]-$1}"
   local offset="$2"
   local size="$3"
 
@@ -71,7 +97,7 @@
 }
 
 write_bytes() {
-  local file="$1"
+  local file="${IPMI_FRU_EEPROM_FILE["$1"]-$1}"
   local offset="$2"
   local -n bytes_arr="$3"