76 lines
2.2 KiB
Bash
Executable File
76 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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# Step: Verify BIOS backup integrity (with per-chip retry)
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# Re-read a single chip until two reads match or user gives up
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_reread_chip() {
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_label="$1" # "4mb" or "8mb"
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_desc="$2" # human-readable description
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while true; do
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warn "$_desc reads do NOT match. The chip may not be reading reliably."
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echo ""
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echo " 1) Re-seat programmer on $_desc chip and retry"
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echo " 2) Abort"
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echo ""
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printf "${CYAN}Choice [1-2]:${NC} "
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read -r _choice
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case "$_choice" in
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1)
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info "Re-reading $_desc chip (read 1 of 2)..."
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run_cmd "sudo flashrom --programmer ch341a_spi -r ${_label}_backup1.bin" || return 1
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info "Re-reading $_desc chip (read 2 of 2)..."
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run_cmd "sudo flashrom --programmer ch341a_spi -r ${_label}_backup2.bin" || return 1
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if diff "${_label}_backup1.bin" "${_label}_backup2.bin" >/dev/null 2>&1; then
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success "$_desc reads now match."
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return 0
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fi
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;;
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*)
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return 1
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;;
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esac
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done
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}
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step_backup_bios() {
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section "Verify BIOS Backups"
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cd "$WORK_DIR" || return 1
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info "Verifying 4MB chip reads match..."
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if diff 4mb_backup1.bin 4mb_backup2.bin >/dev/null 2>&1; then
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success "4MB chip reads are identical."
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else
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_reread_chip "4mb" "4MB (top)" || return 1
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fi
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info "Verifying 8MB chip reads match..."
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if diff 8mb_backup1.bin 8mb_backup2.bin >/dev/null 2>&1; then
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success "8MB chip reads are identical."
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else
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_reread_chip "8mb" "8MB (bottom)" || return 1
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fi
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# Validate file sizes
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_size_4mb=$(wc -c < 4mb_backup1.bin)
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_size_8mb=$(wc -c < 8mb_backup1.bin)
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info "4MB chip size: $_size_4mb bytes (expected $SIZE_4MB)"
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info "8MB chip size: $_size_8mb bytes (expected $SIZE_8MB)"
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if [ "$_size_4mb" -ne "$SIZE_4MB" ]; then
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warn "4MB chip size mismatch. Expected $SIZE_4MB bytes, got $_size_4mb."
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if ! prompt_yes_no "Continue anyway?"; then
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return 1
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fi
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fi
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if [ "$_size_8mb" -ne "$SIZE_8MB" ]; then
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warn "8MB chip size mismatch. Expected $SIZE_8MB bytes, got $_size_8mb."
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if ! prompt_yes_no "Continue anyway?"; then
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return 1
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fi
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fi
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success "All BIOS backups verified."
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}
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