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Multiboot Firmware Root Redirect 

Firmware now includes rudimentary redirect functionality
but this only supports /.rockbox in the root of the device

This patch allows loading external drive and directory into root namespace

Root Redirects can now be put into different folders
For instance placing '/_test' into SD1/rockbox_main.<playername>
will redirect to /<1>/_test/.rockbox

Debug menu>Bootdata now has root directory listed in addition to RAW Bootdata

Redirect root work from Michael Sevakis g#1556

Redirect will be updated if code refactor is ever done

Requires Multiboot bootloader (already in main)

Change-Id: I697b3d0499f85e789c3020bc2133fbe0023f72a2
This commit is contained in:
William Wilgus 2020-08-20 19:19:55 -04:00
parent 5ef28cccf9
commit bd744059cf
3 changed files with 78 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
apps/debug_menu.c
View File

@ -2451,10 +2451,26 @@ static bool dbg_boot_data(void)
info.scroll_all = true;
simplelist_info_init(&info, "Boot data", 1, NULL);
simplelist_set_line_count(0);
simplelist_addline("Magic: %.8s", boot_data.magic);
crc = crc_32(boot_data.payload, boot_data.length, 0xffffffff);
#if defined(HAVE_MULTIBOOT)
char rootpath[VOL_MAX_LEN+2] = RB_ROOT_CONTENTS_DIR;
int boot_volume = 0;
if(crc == boot_data.crc)
{
boot_volume = boot_data.boot_volume; /* boot volume contained in uint8_t payload */
get_redirect_dir(rootpath, sizeof(rootpath), boot_volume, "", "");
rootpath[path_strip_trailing_separators(rootpath,NULL)] = '\0';
}
simplelist_addline("Boot Volume: <%lu>", boot_volume);
simplelist_addline("Root:");
simplelist_addline("%s", rootpath);
simplelist_addline("");
#endif
simplelist_addline("Bootdata RAW:");
if (crc != boot_data.crc)
simplelist_addline("Magic: %.8s", boot_data.magic);
simplelist_addline("Length: %lu", boot_data.length);
simplelist_addline("CRC: %lx", boot_data.crc);
crc = crc_32(boot_data.payload, boot_data.length, 0xffffffff);
(crc == boot_data.crc) ? simplelist_addline("CRC: OK!") :
simplelist_addline("CRC: BAD");
for (unsigned i = 0; i < boot_data.length; i += 4)
@ -2466,7 +2482,7 @@ static bool dbg_boot_data(void)
info.hide_selection = true;
return simplelist_show_list(&info);
}
#endif
#endif /* defined(HAVE_BOOTDATA) && !defined(SIMULATOR) */
/****** The menu *********/
static const struct {

18
firmware/common/disk.c
View File

@ -27,7 +27,7 @@
#include "disk_cache.h"
#include "fileobj_mgr.h"
#include "dir.h"
#include "rb_namespace.h"
#include "dircache_redirect.h"
#include "disk.h"
@ -249,7 +249,23 @@ int disk_mount_all(void)
for (int i = 0; i < NUM_VOLUMES; i++)
vol_drive[i] = -1; /* mark all as unassigned */
#if defined(HAVE_BOOTDATA) && !defined(SIMULATOR) && !defined(BOOTLOADER)
unsigned int crc = 0;
int boot_volume = 0;
crc = crc_32(boot_data.payload, boot_data.length, 0xffffffff);
if(crc == boot_data.crc)
{
boot_volume = boot_data.boot_volume; /* boot volume contained in uint8_t payload */
}
#ifdef HAVE_HOTSWAP
if (storage_present(boot_volume))
#endif
mounted += disk_mount(boot_volume); /* mount boot volume first */
for (int i = 0; i < NUM_DRIVES; i++)
if (i != boot_volume)
#else
for (int i = 0; i < NUM_DRIVES; i++)
#endif
{
#ifdef HAVE_HOTSWAP
if (storage_present(i))

42
firmware/include/dircache_redirect.h
View File

@ -25,6 +25,12 @@
#include "dir.h"
#include "dircache.h"
#if defined(HAVE_MULTIBOOT) && !defined(SIMULATOR)
#include "rb-loader.h"
#include "bootdata.h"
#include "crc32.h"
#endif
/***
** Internal redirects that depend upon whether or not dircache is made
**
@ -132,11 +138,47 @@ static inline void volume_onmount_internal(IF_MV_NONVOID(int volume))
#else
const char *path = PATH_ROOTSTR;
#endif
#if defined(HAVE_MULTIBOOT) && !defined(SIMULATOR)
static char rtpath[VOL_MAX_LEN+2] = RB_ROOT_CONTENTS_DIR;
static bool redirected = false;
int boot_volume = 0;
unsigned int crc = 0;
crc = crc_32(boot_data.payload, boot_data.length, 0xffffffff);
if (crc == boot_data.crc)
{
root_mount_path(path, 0); /*root could be different folder don't hide*/
boot_volume = boot_data.boot_volume; /* boot volume contained in uint8_t payload */
//root_mount_path(path, volume == boot_volume ? NSITEM_HIDDEN : 0);
if (!redirected && volume == boot_volume)
{
if (get_redirect_dir(rtpath, sizeof(rtpath), volume, "", "") < 0)
{ /* Error occurred, card removed? Set root to default */
root_mount_path(RB_ROOT_CONTENTS_DIR, NSITEM_CONTENTS);
}
else
redirected = true;
}
if (redirected && volume == boot_volume)
root_mount_path(rtpath, NSITEM_CONTENTS);
} /*CRC OK*/
else
{
root_mount_path(path, RB_ROOT_VOL_HIDDEN(volume) ? NSITEM_HIDDEN : 0);
if (volume == path_strip_volume(RB_ROOT_CONTENTS_DIR, NULL, false))
root_mount_path(RB_ROOT_CONTENTS_DIR, NSITEM_CONTENTS);
}
#else
root_mount_path(path, RB_ROOT_VOL_HIDDEN(volume) ? NSITEM_HIDDEN : 0);
#ifdef HAVE_MULTIVOLUME
if (volume == path_strip_volume(RB_ROOT_CONTENTS_DIR, NULL, false))
#endif
root_mount_path(RB_ROOT_CONTENTS_DIR, NSITEM_CONTENTS);
#endif /* HAVE_MULTIBOOT */
#ifdef HAVE_DIRCACHE
dircache_mount();
#endif