-/* OpenFirmware-based filesystem
-
- Copyright (C) 1999 Benjamin Herrenschmidt
-
- 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; either version 2 of the License, or
- (at your option) any later version.
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- BrokenFirmware cannot "read" from the network. We use tftp "load" method
- for network boot for now, we may provide our own NFS implementation in
- a later version. That means that we allocate a huge block of memory for
- the entire file before loading it. We use the location where the kernel puts
- RTAS, it's not used by the bootloader and if freed when the kernel is booted.
- This will have to be changed if we plan to instanciate RTAS in the bootloader
- itself
-
-*/
+/*
+ * fs_of.c - an implementation for OpenFirmware supported filesystems
+ *
+ * Copyright (C) 2001, 2002 Ethan Benson
+ *
+ * Copyright (C) 1999 Benjamin Herrenschmidt
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * BrokenFirmware cannot "read" from the network. We use tftp "load"
+ * method for network boot for now, we may provide our own NFS
+ * implementation in a later version. That means that we allocate a
+ * huge block of memory for the entire file before loading it. We use
+ * the location where the kernel puts RTAS, it's not used by the
+ * bootloader and if freed when the kernel is booted. This will have
+ * to be changed if we plan to instanciate RTAS in the bootloader
+ * itself
+ */
#include "ctype.h"
#include "types.h"
#include "string.h"
#include "partition.h"
#include "fs.h"
-
+#include "errors.h"
+#include "debug.h"
#define LOAD_BUFFER_POS 0x600000
#define LOAD_BUFFER_SIZE 0x400000
-static int of_open( struct boot_file_t* file,
- const char* dev_name,
- struct partition_t* part,
- const char* file_name);
-static int of_read( struct boot_file_t* file,
- unsigned int size,
- void* buffer);
-static int of_seek( struct boot_file_t* file,
- unsigned int newpos);
-static int of_close( struct boot_file_t* file);
-
-
-static int of_net_open( struct boot_file_t* file,
- const char* dev_name,
- struct partition_t* part,
- const char* file_name);
-static int of_net_read( struct boot_file_t* file,
- unsigned int size,
- void* buffer);
-static int of_net_seek( struct boot_file_t* file,
- unsigned int newpos);
+static int of_open(struct boot_file_t* file, const char* dev_name,
+ struct partition_t* part, const char* file_name);
+static int of_read(struct boot_file_t* file, unsigned int size, void* buffer);
+static int of_seek(struct boot_file_t* file, unsigned int newpos);
+static int of_close(struct boot_file_t* file);
+
+
+static int of_net_open(struct boot_file_t* file, const char* dev_name,
+ struct partition_t* part, const char* file_name);
+static int of_net_read(struct boot_file_t* file, unsigned int size, void* buffer);
+static int of_net_seek(struct boot_file_t* file, unsigned int newpos);
struct fs_t of_filesystem =
{
- "built-in",
- of_open,
- of_read,
- of_seek,
- of_close
+ "built-in",
+ of_open,
+ of_read,
+ of_seek,
+ of_close
};
struct fs_t of_net_filesystem =
{
- "built-in network",
- of_net_open,
- of_net_read,
- of_net_seek,
- of_close
+ "built-in network",
+ of_net_open,
+ of_net_read,
+ of_net_seek,
+ of_close
};
-
-
static int
-of_open( struct boot_file_t* file,
- const char* dev_name,
- struct partition_t* part,
- const char* file_name)
+of_open(struct boot_file_t* file, const char* dev_name,
+ struct partition_t* part, const char* file_name)
{
- static char buffer[1024];
+ static char buffer[1024];
+ char *filename;
+ char *p;
- DEBUG_ENTER;
- DEBUG_OPEN;
-
- strncpy(buffer, dev_name, 1000);
- strcat(buffer, ":");
- if (part) {
- char pn[3];
- sprintf(pn, "%02d", part->part_number);
- strcat(buffer, pn);
- }
- if (file_name && strlen(file_name)) {
- if (part)
- strcat(buffer, ",");
- strcat(buffer, file_name);
- }
-
- DEBUG_F("<%s>\n", buffer);
-
- file->of_device = prom_open(buffer);
-
- DEBUG_F("file->of_device = %08lx\n", file->of_device);
-
- file->pos = 0;
- file->buffer = NULL;
- if ((file->of_device == PROM_INVALID_HANDLE) || (file->of_device == 0))
- {
- DEBUG_LEAVE(FILE_ERR_NOTFOUND);
- return FILE_ERR_NOTFOUND;
- }
+ DEBUG_ENTER;
+ DEBUG_OPEN;
+
+ strncpy(buffer, dev_name, 768);
+ strcat(buffer, ":");
+ if (part) {
+ char pn[3];
+ sprintf(pn, "%02d", part->part_number);
+ strcat(buffer, pn);
+ }
+ if (file_name && strlen(file_name)) {
+ if (part)
+ strcat(buffer, ",");
+ filename = strdup(file_name);
+ for (p = filename; *p; p++)
+ if (*p == '/')
+ *p = '\\';
+ strcat(buffer, filename);
+ free(filename);
+ }
+
+ DEBUG_F("opening: \"%s\"\n", buffer);
+
+ file->of_device = prom_open(buffer);
+
+ DEBUG_F("file->of_device = %p\n", file->of_device);
+
+ file->pos = 0;
+ file->buffer = NULL;
+ if ((file->of_device == PROM_INVALID_HANDLE) || (file->of_device == 0))
+ {
+ DEBUG_LEAVE(FILE_ERR_BAD_FSYS);
+ return FILE_ERR_BAD_FSYS;
+ }
- DEBUG_LEAVE(FILE_ERR_OK);
- return FILE_ERR_OK;
+ DEBUG_LEAVE(FILE_ERR_OK);
+ return FILE_ERR_OK;
}
static int
-of_net_open( struct boot_file_t* file,
- const char* dev_name,
- struct partition_t* part,
- const char* file_name)
+of_net_open(struct boot_file_t* file, const char* dev_name,
+ struct partition_t* part, const char* file_name)
{
- static char buffer[1024];
-
- DEBUG_ENTER;
- DEBUG_OPEN;
-
- strncpy(buffer, dev_name, 1000);
- strcat(buffer, ":0");
- if (file_name && strlen(file_name)) {
- strcat(buffer, ",");
- strcat(buffer, file_name);
- }
+ static char buffer[1024];
+ char *filename;
+ char *p;
+
+ DEBUG_ENTER;
+ DEBUG_OPEN;
+
+ strncpy(buffer, dev_name, 768);
+ if (file_name && strlen(file_name)) {
+ strcat(buffer, ",");
+ filename = strdup(file_name);
+ for (p = filename; *p; p++)
+ if (*p == '/')
+ *p = '\\';
+ strcat(buffer, filename);
+ free(filename);
+ }
- DEBUG_F("<%s>\n", buffer);
+ DEBUG_F("Opening: \"%s\"\n", buffer);
- file->of_device = prom_open(buffer);
+ file->of_device = prom_open(buffer);
- DEBUG_F("file->of_device = %08lx\n", file->of_device);
+ DEBUG_F("file->of_device = %p\n", file->of_device);
- file->pos = 0;
- if ((file->of_device == PROM_INVALID_HANDLE) || (file->of_device == 0))
- {
- DEBUG_LEAVE(FILE_ERR_NOTFOUND);
- return FILE_ERR_NOTFOUND;
- }
+ file->pos = 0;
+ if ((file->of_device == PROM_INVALID_HANDLE) || (file->of_device == 0))
+ {
+ DEBUG_LEAVE(FILE_ERR_BAD_FSYS);
+ return FILE_ERR_BAD_FSYS;
+ }
- file->buffer = prom_claim((void *)LOAD_BUFFER_POS, LOAD_BUFFER_SIZE, 0);
- if (file->buffer == (void *)-1) {
- prom_printf("Can't claim memory for TFTP download\n");
- prom_close(file->of_device);
- DEBUG_LEAVE(FILE_ERR_NOTFOUND);
- return FILE_ERR_NOTFOUND;
- }
- memset(file->buffer, 0, LOAD_BUFFER_SIZE);
-
- DEBUG_F("TFP...\n");
-
- file->len = prom_loadmethod(file->of_device, file->buffer);
+ file->buffer = prom_claim((void *)LOAD_BUFFER_POS, LOAD_BUFFER_SIZE, 0);
+ if (file->buffer == (void *)-1) {
+ prom_printf("Can't claim memory for TFTP download\n");
+ prom_close(file->of_device);
+ DEBUG_LEAVE(FILE_IOERR);
+ return FILE_IOERR;
+ }
+ memset(file->buffer, 0, LOAD_BUFFER_SIZE);
+
+ DEBUG_F("TFP...\n");
+
+ file->len = prom_loadmethod(file->of_device, file->buffer);
- DEBUG_F("result: %d\n", file->len);
-
+ DEBUG_F("result: %Ld\n", file->len);
- DEBUG_LEAVE(FILE_ERR_OK);
- return FILE_ERR_OK;
+ DEBUG_LEAVE(FILE_ERR_OK);
+ return FILE_ERR_OK;
}
static int
-of_read( struct boot_file_t* file,
- unsigned int size,
- void* buffer)
+of_read(struct boot_file_t* file, unsigned int size, void* buffer)
{
- unsigned int count;
+ unsigned int count;
- count = prom_read(file->of_device, buffer, size);
- file->pos += count;
- return count;
+ count = prom_read(file->of_device, buffer, size);
+ file->pos += count;
+ return count;
}
static int
-of_net_read( struct boot_file_t* file,
- unsigned int size,
- void* buffer)
+of_net_read(struct boot_file_t* file, unsigned int size, void* buffer)
{
- unsigned int count, av;
+ unsigned int count, av;
- av = file->len - file->pos;
- count = size > av ? av : size;
- memcpy(buffer, file->buffer + file->pos, count);
- file->pos += count;
- return count;
+ av = file->len - file->pos;
+ count = size > av ? av : size;
+ memcpy(buffer, file->buffer + file->pos, count);
+ file->pos += count;
+ return count;
}
static int
-of_seek( struct boot_file_t* file,
- unsigned int newpos)
+of_seek(struct boot_file_t* file, unsigned int newpos)
{
- if (prom_seek(file->of_device, newpos)) {
- file->pos = newpos;
- return FILE_ERR_OK;
- }
+ if (prom_seek(file->of_device, newpos)) {
+ file->pos = newpos;
+ return FILE_ERR_OK;
+ }
- return FILE_CANT_SEEK;
+ return FILE_CANT_SEEK;
}
static int
-of_net_seek( struct boot_file_t* file,
- unsigned int newpos)
+of_net_seek(struct boot_file_t* file, unsigned int newpos)
{
- file->pos = (newpos > file->len) ? file->len : newpos;
- return FILE_ERR_OK;
+ file->pos = (newpos > file->len) ? file->len : newpos;
+ return FILE_ERR_OK;
}
static int
-of_close( struct boot_file_t* file)
+of_close(struct boot_file_t* file)
{
- DEBUG_ENTER;
- DEBUG_F("<@0x%08lx>n", file->of_device);
+ DEBUG_ENTER;
+ DEBUG_F("<@%p>\n", file->of_device);
- if (file->buffer) {
- prom_release(file->buffer, LOAD_BUFFER_SIZE);
- }
- prom_close(file->of_device);
+ if (file->buffer) {
+ prom_release(file->buffer, LOAD_BUFFER_SIZE);
+ }
+ prom_close(file->of_device);
+ DEBUG_F("of_close called\n");
- DEBUG_LEAVE(0);
-
- return 0;
+ DEBUG_LEAVE(0);
+ return 0;
}
+/*
+ * Local variables:
+ * c-file-style: "k&r"
+ * c-basic-offset: 5
+ * End:
+ */
projects / yaboot.git / blobdiff