Add emile-first-info to see content of boot block

Makefile

@@ -77,7 +77,8 @@ DISTFILES	= second/head.S second/MMU030.c second/MMU040.c second/main.c \
 		  second/enter_kernel040.S first/first.S \
 		  first/Makefile second/bank.c second/bank.h second/arch.h \
 		  second/arch.c Makefile COPYING README AUTHORS ChangeLog \
-		  tools/Makefile tools/emile-set-cmdline.c
+		  tools/Makefile tools/emile-first.h tools/emile-set-cmdline.c \
+		  tools/emile-first-info.c
 
 dist:
 	rm -fr $(PACKAGE)-$(VERSION)

tools/Makefile

@@ -6,7 +6,11 @@
 
 CFLAGS	= -Wall
 
-all: emile-set-cmdline
+all: emile-set-cmdline emile-first-info
+
+emile-set-cmdline.o: emile-set-cmdline.c emile-first.h
+
+emile-first-info.o: emile-first-info.c emile-first.h
 
 clean:
 	rm -f *.o emile-set-cmdline

tools/emile-first-info.c

@@ -0,0 +1,129 @@
+/*
+ *
+ * (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
+ *
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include "emile-first.h"
+
+static void usage(int argc, char** argv)
+{
+	fprintf(stderr, "Usage: %s <image>\n", argv[0]);
+	fprintf(stderr, "\n     display first level boot block info\n");
+}
+
+static void pprint(char *string)
+{
+	int l = *string++;
+
+	while (l-- != 0)
+		putchar(*string++);
+}
+
+int first_info(char* image)
+{
+	int fd;
+	eBootBlock_t firstBlock;
+	int ret;
+
+	fd = open(image, O_RDONLY);
+	if (fd == -1)
+	{
+		perror("Cannot open image file");
+		return 2;
+	}
+
+	ret = read(fd, &firstBlock, sizeof(firstBlock));
+	if (ret != sizeof(firstBlock))
+	{
+		perror("Cannot read first level boot block");
+		close(fd);
+		return 3;
+	}
+
+	printf("Boot Block Header:\n\n");
+	printf("Boot blocks signature: 0x%x\n", 
+					firstBlock.boot_block_header.ID);
+	printf("Entry point to bootcode: 0x%lX\n", 
+					firstBlock.boot_block_header.Entry);
+	printf("Boot blocks version number: %x\n", 
+					firstBlock.boot_block_header.Version);
+	printf("System filename: ");
+	pprint(firstBlock.boot_block_header.SysName);
+	putchar('\n');
+	printf("Finder filename: ");
+	pprint(firstBlock.boot_block_header.ShellName);
+	putchar('\n');
+	printf("Debugger1 filename: ");
+	pprint(firstBlock.boot_block_header.Dbg1Name);
+	putchar('\n');
+	printf("Debugger2 filename: ");
+	pprint(firstBlock.boot_block_header.Dbg2Name);
+	putchar('\n');
+	printf("Name of startup screen: ");
+	pprint(firstBlock.boot_block_header.ScreenName);
+	putchar('\n');
+	printf("Name of startup program: ");
+	pprint(firstBlock.boot_block_header.HelloName);
+	putchar('\n');
+	printf("Name of system scrap file: ");
+	pprint(firstBlock.boot_block_header.ScrapName);
+	putchar('\n');
+	printf("Number of FCBs to allocate: %d\n", 
+					firstBlock.boot_block_header.CntFCBs);
+	printf("Number of event queue elements: %d\n",
+					firstBlock.boot_block_header.CntEvts);
+	printf("System heap size on 128K Mac: 0x%lx\n",
+					firstBlock.boot_block_header.Heap128K);
+	printf("System heap size on 256K Mac: 0x%lx\n",
+					firstBlock.boot_block_header.Heap256K);
+	printf("System heap size on all machines: 0x%lx\n",
+					firstBlock.boot_block_header.SysHeapSize);
+
+	if ( strncmp( firstBlock.boot_block_header.SysName+1,
+		      "Mac Bootloader", 14) == 0 )
+	{
+		printf("\nEMILE boot block identified\n\n");
+
+		printf("Drive number: %d\n", 
+				firstBlock.second_param_block.ioVRefNum);
+		printf("File reference number: %d\n", 
+				firstBlock.second_param_block.ioRefNum);
+		printf("Second level size: %ld\n", 
+				firstBlock.second_param_block.ioReqCount);
+		printf("Second level offset: %ld\n", 
+				firstBlock.second_param_block.ioPosOffset);
+	}
+
+	close(fd);
+	return 0;
+}
+
+int main(int argc, char** argv)
+{
+	int ret;
+
+	ASSERT_BBH(
+	{fprintf(stderr,"Internal Error: Bad BootBlkHdr size\n"); exit(1);});
+	ASSERT_PBR(
+	{fprintf(stderr,"Internal Error: Bad ParamBlockRec size\n"); exit(1);});
+	ASSERT_BB(
+	{fprintf(stderr,"Internal Error: Bad boot block size\n"); exit(1);});
+
+	if (argc != 2)
+	{
+		usage(argc, argv);
+		return 1;
+	}
+
+	ret = first_info(argv[1]);
+
+	return ret;
+}

tools/emile-first.h

@@ -0,0 +1,79 @@
+/*
+ *
+ * (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
+ *
+ */
+
+/*
+ * WARNING: remember that m68k is big endian, like powerPC.
+ *	    i386 is little-endian
+ */
+
+/* first level structure */
+
+/* BootBlkHdr Structure: "Inside Macintosh: Files", p. 2-57 */
+
+typedef struct BootBlkHdr BootBlkHdr_t;
+
+struct BootBlkHdr {
+	unsigned short	ID;		/* boot blocks signature */
+	unsigned long	Entry;		/* entry point to bootcode */
+	unsigned short	Version;	/* boot blocks version number */
+	unsigned short	PageFlags;	/* used internally */
+	unsigned char	SysName[16];	/* System filename */
+	unsigned char	ShellName[16];	/* Finder filename */
+	unsigned char	Dbg1Name[16];	/* debugger filename */
+	unsigned char	Dbg2Name[16];	/* debugger filename */
+	unsigned char	ScreenName[16];	/* name of startup screen */
+	unsigned char	HelloName[16];	/* name of startup program */
+	unsigned char	ScrapName[16];	/* name of system scrap file */
+	unsigned short	CntFCBs;	/* number of FCBs to allocate */
+	unsigned short	CntEvts;	/* number of event queue elements */
+	unsigned long	Heap128K;	/* system heap size on 128K Mac */
+	unsigned long	Heap256K;	/* used internally */
+	unsigned long	SysHeapSize;	/* system heap size on all machines */
+} __attribute__((packed));
+
+#define ASSERT_BBH(a)	if ( sizeof(BootBlkHdr_t) != 138 ) { a }
+
+/* ParamBlockRec Structure: "Inside Macintosh: Files", p. 2-87 */
+
+typedef struct ParamBlockRec ParamBlockRec_t;
+
+struct ParamBlockRec {
+	unsigned long	qLink;		/* next queue entry */
+	unsigned short	qType;		/* queue type */
+	unsigned short	ioTrap;		/* routine trap */
+	unsigned long	ioCmdAddr;	/* routine address */
+	unsigned long	ioCompletion;	/* pointer to completion routine */
+	unsigned short	ioResult;	/* result code */
+	unsigned long	ioNamePtr;	/* pointer to pathname */
+	signed short	ioVRefNum;	/* volume specification */
+	signed short	ioRefNum;	/* file reference number */
+	signed char	ioVersNum;	/* version number */
+	signed char	ioPermssn;	/* read/write permission */
+	unsigned long	ioMisc;		/* miscellaneaous */
+	unsigned long	ioBuffer;	/* data buffer */
+	unsigned long	ioReqCount;	/* requested number of bytes */
+	unsigned long	ioActCount;	/* actual number of bytes */
+	unsigned short	ioPosMode;	/* positioning mode and newline char */
+	signed long	ioPosOffset;	/* positionning offset */
+} __attribute__((packed));
+
+#define ASSERT_PBR(a)	if ( sizeof(ParamBlockRec_t) != 50 ) { a }
+
+/* EMILE Boot block structure */
+
+typedef struct eBootBlock eBootBlock_t;
+
+struct eBootBlock {
+	BootBlkHdr_t		boot_block_header;
+	ParamBlockRec_t		second_param_block;
+	unsigned char		boot_code[1024 - sizeof(BootBlkHdr_t)
+					       - sizeof(ParamBlockRec_t)];
+} __attribute__((packed));
+
+#define ASSERT_BB(a)	if ( sizeof(eBootBlock_t) != 1024 ) { a }
+
+#define SECTOR_SIZE             512
+#define FIRST_LEVEL_SIZE        (SECTOR_SIZE * 2)