Fix flashrom progress bar size

On broadwell, the hardcoded 16MB flash caused the progress bar to be at 50%
when it finishes flashing.
This reads the total flash size from the flashrom output.
Fixes https://code.puri.sm/kakaroto/coreboot-files/issues/7

build_coreboot.sh

@@ -249,7 +249,7 @@ get_and_patch_me_11 () {
 
 flashrom_progress() {
     local current=0
-    local total_bytes=0x1000000
+    local total_bytes=0
     local percent=0
     local IN=''
     local spin='-\|/'
@@ -257,16 +257,27 @@ flashrom_progress() {
     local progressbar=''
     local progressbar2=''
     local status='init'
+    local prev_word=''
+    local prev_prev_word=''
 
     progressbar2=$(for ((i=0; i < 49; i++)) do echo -ne ' ' ; done)
     echo "Initializing internal Flash Programmer"
     while true ; do
+        prev_prev_word=$prev_word
+        prev_word=$IN
         read -r -d' ' IN || break
-        current=$(echo "$IN" | grep -E -o '0x[0-9a-f]+-0x[0-9a-f]+:.*' | grep -E -o "0x[0-9a-f]+" | tail -n 1)
-        if [ "${current}" != "" ]; then
-            percent=$((100 * (current + 1) / total_bytes))
-            progressbar=$(for ((i=0; i < $((percent / 2)); i++)) do echo -ne '#' ; done)
-            progressbar2=$(for ((i=0; i < $((49 - percent / 2)); i++)) do echo -ne ' ' ; done)
+        if [ "$total_bytes" != "0" ]; then
+            current=$(echo "$IN" | grep -E -o '0x[0-9a-f]+-0x[0-9a-f]+:.*' | grep -E -o "0x[0-9a-f]+" | tail -n 1)
+            if [ "${current}" != "" ]; then
+                percent=$((100 * (current + 1) / total_bytes))
+                progressbar=$(for ((i=0; i < $((percent / 2)); i++)) do echo -ne '#' ; done)
+                progressbar2=$(for ((i=0; i < $((49 - percent / 2)); i++)) do echo -ne ' ' ; done)
+            fi
+        else
+            if [ "$prev_prev_word"  == "Reading" ] && [ "$IN" == "bytes" ]; then
+                total_bytes=$prev_word
+                echo "Total flash size : $total_bytes bytes"
+            fi
         fi
         if [ "$percent" -eq 100 ]; then
             spin_idx=4
@@ -376,12 +387,14 @@ if [ "$machine" = "1" ]; then
     COREBOOT_BIOS_SHA="$L13V1_COREBOOT_BIOS_SHA"
     COREBOOT_TAG="$L13V1_COREBOOT_VERSION"
     SKL=0
+    BDL_VGA_PCI_ID="8086,1616"
 elif [ "$machine" = "2" ]; then
     BLOB_DIR="3rdparty/blobs/mainboard/purism/librem15v2"
     COREBOOT_FILENAME="coreboot-l15v2.rom"
     COREBOOT_BIOS_SHA="$L15V2_COREBOOT_BIOS_SHA"
     COREBOOT_TAG="$L15V2_COREBOOT_VERSION"
     SKL=0
+    BDL_VGA_PCI_ID="8086,162b"
 elif [ "$machine" = "3" ]; then
     BLOB_DIR="3rdparty/blobs/mainboard/purism/librem_skl"
     COREBOOT_FILENAME="coreboot-l13v2.rom"
@@ -506,7 +519,7 @@ if [ "$blobs" == "1" ] || [ "$blobs" == "2" ]; then
         check_and_get_url cpu_microcode_blob.bin $BDL_UCODE_URL $BDL_UCODE_SHA "Intel Microcode Update"
         extract_binary mrc.bin mrc.bin $BDL_MRC_SHA
         extract_binary "fallback/refcode" refcode.elf $BDL_REFCODE_SHA
-        extract_binary pci8086,1616.rom vgabios.bin $BDL_VBIOS_SHA
+        extract_binary pci${BDL_VGA_PCI_ID}.rom vgabios.bin $BDL_VBIOS_SHA
     else
         check_and_copy_descriptor_skl
         check_binary descriptor.bin $SKL_DESCRIPTOR_SHA