[flashrom] [RFC] Kill --force

[Carl-Daniel Hailfinger]

--force may have been a good idea back when only developers were using
flashrom, but over the last few months I've seen too many people who
incorrectly believed that --force would solve anything.

One of the problems is that --force has multiple meanings:
- Force chip read by faking probe success.
- Force writing even if cbtable tells us that this is the wrong image
for this board.
- Force chip access even if the chip is bigger than max decode size for
the flash bus.
- Force erase even if erase is known bad.
- Force write even if write is known bad.
We should kill --force and replace it with explicit --force-erase or
--force-cbtable-mismatch or similar stuff, maybe -p internal:ignore_cbtable.

First step:
- Remove any suggestions to use --force for probe/read from flashrom output.
- Don't talk about "success" or "Found chip" if the chip is forced.

Signed-off-by: Carl-Daniel Hailfinger

Index: flashrom-forced_stupid/cli_classic.c
===================================================================
--- flashrom-forced_stupid/cli_classic.c	(Revision 992)
+++ flashrom-forced_stupid/cli_classic.c	(Arbeitskopie)
@@ -303,6 +303,18 @@
    	cli_classic_usage(argv[0]);
    }

+	if (chip_to_probe) {
+		for (flash = flashchips; flash && flash->name; flash++)
+			if (!strcmp(flash->name, chip_to_probe))
+				break;
+		if (!flash || !flash->name) {
+			fprintf(stderr, "Error: Unknown chip specified.\n");
+			exit(1);
+		}
+		/* Clean up after the check. */
+		flash = NULL;
+	}
+		
    if (programmer_init()) {
    	fprintf(stderr, "Error: Programmer initialization failed.\n");
    	exit(1);
@@ -329,14 +341,10 @@
    } else if (!flashes[0]) {
    	printf("No EEPROM/flash device found.\n");
    	if (!force || !chip_to_probe) {
-			printf("If you know which flash chip you have, and if this version of flashrom\n");
-			printf("supports a similar flash chip, you can try to force read your chip. Run:\n");
-			printf("flashrom -f -r -c similar_supported_flash_chip filename\n");
-			printf("\n");
-			printf("Note: flashrom can never write when the flash chip isn't found automatically.\n");
+			printf("Note: flashrom can never write if the flash chip isn't found automatically.\n");
    	}
    	if (force && read_it && chip_to_probe) {
-			printf("Force read (-f -r -c) requested, forcing chip probe success:\n");
+			printf("Force read (-f -r -c) requested, pretending the chip is there:\n");
    		flashes[0] = probe_flash(flashchips, 1);
    		if (!flashes[0]) {
    			printf("flashrom does not support a flash chip named '%s'.\n", chip_to_probe);
Index: flashrom-forced_stupid/flashrom.c
===================================================================
--- flashrom-forced_stupid/flashrom.c	(Revision 992)
+++ flashrom-forced_stupid/flashrom.c	(Arbeitskopie)
@@ -924,7 +924,8 @@
    if (!flash || !flash->name)
    	return NULL;

-	printf("Found chip "%s %s" (%d KB, %s) at physical address 0x%lx.\n",
+	printf("%s chip "%s %s" (%d KB, %s) at physical address 0x%lx.\n",
+	       force ? "Assuming" : "Found",
           flash->vendor, flash->name, flash->total_size,
           flashbuses_to_text(flash->bustype), base);