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/*
* This file is part of the coreinfo project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#include "coreinfo.h"
#include "endian.h"
#if IS_ENABLED(CONFIG_MODULE_CBFS)
#define ALIGN(_v, _a) (((_v) + ((_a) - 1)) & ~((_a) - 1))
#define HEADER_MAGIC 0x4F524243
#define HEADER_ADDR 0xfffffffc
#define LARCHIVE_MAGIC 0x455649484352414cLL /* "LARCHIVE" */
#define COMPONENT_DELETED 0x00
#define COMPONENT_STAGE 0x10
#define COMPONENT_PAYLOAD 0x20
#define COMPONENT_OPTIONROM 0x30
#define COMPONENT_NULL 0xffffffff
struct cbheader {
u32 magic;
u32 version;
u32 romsize;
u32 bootblocksize;
u32 align;
u32 offset;
u32 architecture;
u32 pad[1];
} __attribute__ ((packed));
struct cbfile {
u64 magic;
u32 len;
u32 type;
u32 checksum;
u32 offset;
char filename[0];
} __attribute__ ((packed));
static int filecount = 0, selected = 0;
static char **filenames;
static struct cbheader *header = NULL;
static struct cbfile *getfile(struct cbfile *f)
{
while (1) {
if (f < (struct cbfile *)(0xffffffff - ntohl(header->romsize)))
return NULL;
if (f->magic == 0)
return NULL;
if (f->magic == LARCHIVE_MAGIC)
return f;
f = (void *)f + ntohl(header->align);
}
}
static struct cbfile *firstfile(void)
{
return getfile((void *)(0 - ntohl(header->romsize) +
ntohl(header->offset)));
}
static struct cbfile *nextfile(struct cbfile *f)
{
f = (void *)f + ALIGN(ntohl(f->len) + ntohl(f->offset),
ntohl(header->align));
return getfile(f);
}
static struct cbfile *findfile(const char *filename)
{
struct cbfile *f;
for (f = firstfile(); f; f = nextfile(f)) {
if (strcmp(filename, f->filename) == 0)
return f;
}
return NULL;
}
static int cbfs_module_init(void)
{
struct cbfile *f;
int index = 0;
header = *(void **)HEADER_ADDR;
if (header->magic != ntohl(HEADER_MAGIC)) {
header = NULL;
return 0;
}
for (f = firstfile(); f; f = nextfile(f))
filecount++;
filenames = malloc(filecount * sizeof(char *));
if (filenames == NULL)
return 0;
for (f = firstfile(); f; f = nextfile(f))
filenames[index++] = strdup((const char *)f->filename);
return 0;
}
static int cbfs_module_redraw(WINDOW * win)
{
struct cbfile *f;
int i, row = 2;
print_module_title(win, "CBFS Listing");
if (!header) {
mvwprintw(win, 11, 61 / 2, "Bad or missing CBFS header");
return 0;
}
/* Draw a line down the middle. */
for (i = 2; i < 21; i++)
mvwaddch(win, i, 30, ACS_VLINE);
/* Draw the names down the left side. */
for (i = 0; i < filecount; i++) {
if (i == selected)
wattrset(win, COLOR_PAIR(3) | A_BOLD);
else
wattrset(win, COLOR_PAIR(2));
if (i == filecount - 1)
mvwprintw(win, 2 + i, 1, "<free space>");
else
mvwprintw(win, 2 + i, 1, "%.25s", filenames[i]);
}
f = findfile(filenames[selected]);
if (!f) {
mvwprintw(win, 11, 32, "ERROR: CBFS component not found");
return 0;
}
wattrset(win, COLOR_PAIR(2));
/* mvwprintw(win, row++, 32, "Offset: 0x%x", f->offset); *//* FIXME */
mvwprintw(win, row, 32, "Type: ");
switch (ntohl(f->type)) {
case COMPONENT_STAGE:
mvwprintw(win, row++, 38, "stage");
break;
case COMPONENT_PAYLOAD:
mvwprintw(win, row++, 38, "payload");
break;
case COMPONENT_OPTIONROM:
mvwprintw(win, row++, 38, "optionrom");
break;
case COMPONENT_NULL:
mvwprintw(win, row++, 38, "free");
break;
case COMPONENT_DELETED:
mvwprintw(win, row++, 38, "deleted");
break;
default:
mvwprintw(win, row++, 38, "Unknown (0x%x)", ntohl(f->type));
break;
}
mvwprintw(win, row++, 32, "Size: %d", ntohl(f->len));
mvwprintw(win, row++, 32, "Checksum: 0x%x", ntohl(f->checksum));
return 0;
}
static int cbfs_module_handle(int key)
{
int ret = 0;
if (filecount == 0)
return 0;
switch (key) {
case KEY_DOWN:
if (selected + 1 < filecount) {
selected++;
ret = 1;
}
break;
case KEY_UP:
if (selected > 0) {
selected--;
ret = 1;
}
break;
}
return ret;
}
struct coreinfo_module cbfs_module = {
.name = "CBFS",
.init = cbfs_module_init,
.redraw = cbfs_module_redraw,
.handle = cbfs_module_handle
};
#else
struct coreinfo_module cbfs_module = {
};
#endif
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