# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1701562814 0
# Node ID f34261bb3355f8b1f9cf0c43562645bc57e171c0
# Parent  a5bff8104b459f08460b8b647ac03c4bd6e73ba9
pln-ppb-test: implement PPB erase

diff -r a5bff8104b45 -r f34261bb3355 target-utils/pln-ppb-test/Makefile
--- a/target-utils/pln-ppb-test/Makefile	Sun Dec 03 00:16:17 2023 +0000
+++ b/target-utils/pln-ppb-test/Makefile	Sun Dec 03 00:20:14 2023 +0000
@@ -5,7 +5,7 @@
 OBJCOPY=arm-elf-objcopy
 
 PROG=	pln-ppb-test
-OBJS=	crt0.o cmdtab.o main.o mode_entry.o program.o read_id.o
+OBJS=	crt0.o cmdtab.o erase.o main.o mode_entry.o program.o read_id.o
 LIBS=	../libcommon/libcommon.a ../libprintf/libprintf.a \
 	../libbase/libbase.a ../libc/libc.a
 LIBGCC=	`${CC} -print-file-name=libgcc.a`
diff -r a5bff8104b45 -r f34261bb3355 target-utils/pln-ppb-test/cmdtab.c
--- a/target-utils/pln-ppb-test/cmdtab.c	Sun Dec 03 00:16:17 2023 +0000
+++ b/target-utils/pln-ppb-test/cmdtab.c	Sun Dec 03 00:20:14 2023 +0000
@@ -2,6 +2,7 @@
 
 extern void cmd_abbr();
 extern void cmd_abbw();
+extern void cmd_erase();
 extern void cmd_jump();
 extern void cmd_mode_entry();
 extern void cmd_mode_exit();
@@ -28,6 +29,7 @@
 	{"abbw", cmd_abbw},
 	{"baud", cmd_baud_switch},
 	{"dump", cmd_memdump_human},
+	{"erase", cmd_erase},
 	{"jump", cmd_jump},
 	{"mode-entry", cmd_mode_entry},
 	{"mode-exit", cmd_mode_exit},
diff -r a5bff8104b45 -r f34261bb3355 target-utils/pln-ppb-test/erase.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/pln-ppb-test/erase.c	Sun Dec 03 00:20:14 2023 +0000
@@ -0,0 +1,33 @@
+/*
+ * erase command for PPB special mode
+ */
+
+#include <sys/types.h>
+#include "types.h"
+
+void
+cmd_erase(argbulk)
+	char *argbulk;
+{
+	char *argv[2];
+	u_long addr;
+	u16 buf[256];
+	int i;
+
+	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
+		return;
+	if (parse_hexarg(argv[0], 8, &addr) < 0) {
+		printf("ERROR: argument must be a valid 32-bit hex address\n");
+		return;
+	}
+	if (addr & 1) {
+		printf("ERROR: unaligned address\n");
+		return;
+	}
+	*(volatile u16 *)addr = 0x80;
+	*(volatile u16 *)addr = 0x30;
+	for (i = 0; i < 256; i++)
+		buf[i] = *(volatile u16 *)addr;
+	for (i = 0; i < 256; i++)
+		printf("%04X%c", buf[i], (i & 15) == 15 ? '\n' : ' ');
+}