# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1598584276 0
# Node ID d68275d47a32c8b7af60cba6bc2528834164d2c2
# Parent  232e36a227dd575f58875bdb4860ddd7503747db
tiffs IVA: decode command implemented

diff -r 232e36a227dd -r d68275d47a32 ffstools/tiffs-rd/Makefile
--- a/ffstools/tiffs-rd/Makefile	Tue Aug 25 17:28:32 2020 +0000
+++ b/ffstools/tiffs-rd/Makefile	Fri Aug 28 03:11:16 2020 +0000
@@ -1,8 +1,10 @@
 CC=	gcc
 CFLAGS=	-O2
 PROG=	tiffs
-OBJS=	basics.o cat.o globals.o inode.o ls.o main.o object.o tree.o xtr.o
+OBJS=	basics.o cat.o decode.o globals.o inode.o ls.o main.o object.o tree.o \
+	xtr.o
 HDRS=	globals.h pathname.h struct.h types.h
+LIBS=	../../librftab/librftab.a
 
 INSTALL_PREFIX=	/opt/freecalypso
 
@@ -10,8 +12,8 @@
 
 all:	${PROG}
 
-${PROG}:	${OBJS}
-	${CC} -o $@ ${OBJS}
+${PROG}:	${OBJS} ${LIBS}
+	${CC} -o $@ ${OBJS} ${LIBS}
 
 ${OBJS}:	${HDRS}
 
diff -r 232e36a227dd -r d68275d47a32 ffstools/tiffs-rd/decode.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ffstools/tiffs-rd/decode.c	Fri Aug 28 03:11:16 2020 +0000
@@ -0,0 +1,142 @@
+/*
+ * This C module implements the decode command, displaying certain
+ * FFS files in a developer-friendly decoded form.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <unistd.h>
+#include "types.h"
+#include "struct.h"
+#include "globals.h"
+#include "pathname.h"
+
+extern void write_afcdac_ascii();
+extern void write_stdmap_ascii();
+extern void write_adccal_table();
+extern void write_afcparams_table();
+extern void write_tx_ramps_table();
+extern void write_tx_levels_table();
+extern void write_tx_calchan_table();
+extern void write_tx_caltemp_table();
+extern void write_rx_calchan_table();
+extern void write_rx_caltemp_table();
+extern void write_rx_agcparams_table();
+
+static struct map {
+	char		*req_name;
+	char		*pathname;
+	int		need_band;
+	unsigned	size;
+	void		(*decode_func)();
+} map_table[] = {
+  {"adccal",       "/sys/adccal",             0,  36, write_adccal_table},
+  {"afcdac",       "/gsm/rf/afcdac",          0,   2, write_afcdac_ascii},
+  {"afcparams",    "/gsm/rf/afcparams",       0,  24, write_afcparams_table},
+  {"stdmap",       "/gsm/rf/stdmap",          0,   2, write_stdmap_ascii},
+  {"tx-ramps",     "/gsm/rf/tx/ramps.%s",     1, 512, write_tx_ramps_table},
+  {"tx-levels",    "/gsm/rf/tx/levels.%s",    1, 128, write_tx_levels_table},
+  {"tx-calchan",   "/gsm/rf/tx/calchan.%s",   1, 128, write_tx_calchan_table},
+  {"tx-caltemp",   "/gsm/rf/tx/caltemp.%s",   1,  40, write_tx_caltemp_table},
+  {"rx-calchan",   "/gsm/rf/rx/calchan.%s",   1,  40, write_rx_calchan_table},
+  {"rx-caltemp",   "/gsm/rf/rx/caltemp.%s",   1,  44, write_rx_caltemp_table},
+  {"rx-agcparams", "/gsm/rf/rx/agcparams.%s", 1,   8, write_rx_agcparams_table},
+  {0,              0,                         0,   0, 0}
+};
+
+static u8 file_read_buf[512];
+static unsigned file_expected_size;
+static unsigned file_read_ptr;
+
+static void
+read_chunk(ch)
+	struct chunkinfo *ch;
+{
+	if (!ch->len)
+		return;
+	if (file_read_ptr + ch->len > file_expected_size) {
+		fprintf(stderr, "error: FFS file is longer than expected\n");
+		exit(1);
+	}
+	bcopy(ch->start, file_read_buf + file_read_ptr, ch->len);
+	file_read_ptr += ch->len;
+}
+
+static void
+segment_read_callback(inf, opaque)
+	struct inode_info *inf;
+	u_long opaque;
+{
+	struct chunkinfo chi;
+
+	size_extra_chunk(inf, &chi);
+	read_chunk(&chi);
+}
+
+cmd_decode(argc, argv)
+	char **argv;
+{
+	struct map *map;
+	char pathname[PATHNAME_BUF_SIZE];
+	int headino;
+	struct inode_info *inf;
+	struct chunkinfo chi;
+
+	if (argc < 2) {
+usage:		fprintf(stderr, "usage: decode file-keyword [band]\n");
+		exit(1);
+	}
+	for (map = map_table; map->req_name; map++)
+		if (!strcmp(map->req_name, argv[1]))
+			break;
+	if (!map->req_name) {
+		fprintf(stderr, "error: file keyword \"%s\" not known\n",
+			argv[1]);
+		exit(1);
+	}
+	if (map->need_band) {
+		if (argc < 3) {
+			fprintf(stderr,
+				"error: band not specified for %s table\n",
+				map->req_name);
+			exit(1);
+		}
+		if (argc > 3)
+			goto usage;
+		if (strlen(argv[2]) > 7) {
+			fprintf(stderr,
+				"error: band name argument is too long\n");
+			exit(1);
+		}
+		sprintf(pathname, map->pathname, argv[2]);
+	} else {
+		if (argc > 2)
+			goto usage;
+		strcpy(pathname, map->pathname);
+	}
+	file_expected_size = map->size;
+
+	read_ffs_image();
+	find_inode_block();
+	alloc_inode_table();
+	find_root_inode();
+
+	headino = find_pathname(pathname);
+	inf = inode_info[headino];
+	if (inf->type != 0xF1) {
+		fprintf(stderr, "error: FFS object is not a regular file\n");
+		exit(1);
+	}
+	size_head_chunk(inf, &chi);
+	read_chunk(&chi);
+	iterate_seg_file(headino, segment_read_callback, 0L, 0, 0);
+	if (file_read_ptr < file_expected_size) {
+		fprintf(stderr, "error: FFS file is shorter than expected\n");
+		exit(1);
+	}
+	map->decode_func(file_read_buf, stdout);
+	exit(0);
+}
diff -r 232e36a227dd -r d68275d47a32 ffstools/tiffs-rd/main.c
--- a/ffstools/tiffs-rd/main.c	Tue Aug 25 17:28:32 2020 +0000
+++ b/ffstools/tiffs-rd/main.c	Fri Aug 28 03:11:16 2020 +0000
@@ -56,6 +56,7 @@
 extern int cmd_blkhdr();
 extern int cmd_cat();
 extern int cmd_catino();
+extern int cmd_decode();
 extern int cmd_fsinfo();
 extern int cmd_ls();
 extern int cmd_lsino();
@@ -68,6 +69,7 @@
 	{"blkhdr", cmd_blkhdr},
 	{"cat", cmd_cat},
 	{"catino", cmd_catino},
+	{"decode", cmd_decode},
 	{"fsck", NULL},
 	{"fsinfo", cmd_fsinfo},
 	{"ls", cmd_ls},