File 0001-Add-bootargs-parser-for-open-firmware.patch of Package grub2.1581
From 0787fba15352ef47958e0c9fcc912b8bbcf8ab4e Mon Sep 17 00:00:00 2001
From: Paulo Flabiano Smorigo <pfsmorigo@linux.vnet.ibm.com>
Date: Mon, 30 Jun 2014 10:31:59 -0300
Subject: [PATCH 1/2] Add bootargs parser for open firmware.
It enables net boot even when there is no bootp/dhcp server.
---
ChangeLog | 16 +++++
grub-core/kern/ieee1275/init.c | 7 +--
grub-core/net/bootp.c | 63 +++++--------------
grub-core/net/drivers/ieee1275/ofnet.c | 107 ++++++++++++++++++++++++++++++++-
grub-core/net/net.c | 38 ++++++++++++
include/grub/ieee1275/ieee1275.h | 3 +-
include/grub/net.h | 4 ++
7 files changed, 185 insertions(+), 53 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 41bcebf..a659369 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2014-01-24 Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
+
+ Add bootargs parser for open firmware.
+
+ It enables net boot even when there is no bootp/dhcp server.
+
+ * grub-core/net/drivers/ieee1275/ofnet.c: Add grub_ieee1275_parse_bootargs
+ and call it at grub_ieee1275_net_config_real.
+
+2013-12-23 Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
+
+ Add grub_env_set_net_property function.
+
+ * grub-core/net/bootp.c: Remove set_env_limn_ro.
+ * grub-core/net/net.c: Add grub_env_set_net_property.
+
2013-12-24 Vladimir Serbinenko <phcoder@gmail.com>
* configure.ac: Set version to 2.02~beta2.
diff --git a/grub-core/kern/ieee1275/init.c b/grub-core/kern/ieee1275/init.c
index 89b2822..d5bd74d 100644
--- a/grub-core/kern/ieee1275/init.c
+++ b/grub-core/kern/ieee1275/init.c
@@ -80,9 +80,8 @@ grub_translate_ieee1275_path (char *filepath)
}
}
-void (*grub_ieee1275_net_config) (const char *dev,
- char **device,
- char **path);
+void (*grub_ieee1275_net_config) (const char *dev, char **device, char **path,
+ char *bootpath);
void
grub_machine_get_bootlocation (char **device, char **path)
{
@@ -126,7 +125,7 @@ grub_machine_get_bootlocation (char **device, char **path)
*ptr = 0;
if (grub_ieee1275_net_config)
- grub_ieee1275_net_config (canon, device, path);
+ grub_ieee1275_net_config (canon, device, path, bootpath);
grub_free (dev);
grub_free (canon);
}
diff --git a/grub-core/net/bootp.c b/grub-core/net/bootp.c
index c14e9de..6310ed4 100644
--- a/grub-core/net/bootp.c
+++ b/grub-core/net/bootp.c
@@ -25,41 +25,6 @@
#include <grub/net/udp.h>
#include <grub/datetime.h>
-static char *
-grub_env_write_readonly (struct grub_env_var *var __attribute__ ((unused)),
- const char *val __attribute__ ((unused)))
-{
- return NULL;
-}
-
-static void
-set_env_limn_ro (const char *intername, const char *suffix,
- const char *value, grub_size_t len)
-{
- char *varname, *varvalue;
- char *ptr;
- varname = grub_xasprintf ("net_%s_%s", intername, suffix);
- if (!varname)
- return;
- for (ptr = varname; *ptr; ptr++)
- if (*ptr == ':')
- *ptr = '_';
- varvalue = grub_malloc (len + 1);
- if (!varvalue)
- {
- grub_free (varname);
- return;
- }
-
- grub_memcpy (varvalue, value, len);
- varvalue[len] = 0;
- grub_env_set (varname, varvalue);
- grub_register_variable_hook (varname, 0, grub_env_write_readonly);
- grub_env_export (varname);
- grub_free (varname);
- grub_free (varvalue);
-}
-
static void
parse_dhcp_vendor (const char *name, const void *vend, int limit, int *mask)
{
@@ -136,20 +101,24 @@ parse_dhcp_vendor (const char *name, const void *vend, int limit, int *mask)
}
continue;
case GRUB_NET_BOOTP_HOSTNAME:
- set_env_limn_ro (name, "hostname", (const char *) ptr, taglength);
- break;
+ grub_env_set_net_property (name, "hostname", (const char *) ptr,
+ taglength);
+ break;
case GRUB_NET_BOOTP_DOMAIN:
- set_env_limn_ro (name, "domain", (const char *) ptr, taglength);
- break;
+ grub_env_set_net_property (name, "domain", (const char *) ptr,
+ taglength);
+ break;
case GRUB_NET_BOOTP_ROOT_PATH:
- set_env_limn_ro (name, "rootpath", (const char *) ptr, taglength);
- break;
+ grub_env_set_net_property (name, "rootpath", (const char *) ptr,
+ taglength);
+ break;
case GRUB_NET_BOOTP_EXTENSIONS_PATH:
- set_env_limn_ro (name, "extensionspath", (const char *) ptr, taglength);
- break;
+ grub_env_set_net_property (name, "extensionspath", (const char *) ptr,
+ taglength);
+ break;
/* If you need any other options please contact GRUB
development team. */
@@ -211,8 +180,8 @@ grub_net_configure_by_dhcp_ack (const char *name,
}
if (size > OFFSET_OF (boot_file, bp))
- set_env_limn_ro (name, "boot_file", (char *) bp->boot_file,
- sizeof (bp->boot_file));
+ grub_env_set_net_property (name, "boot_file", bp->boot_file,
+ sizeof (bp->boot_file));
if (is_def)
grub_net_default_server = 0;
if (is_def && !grub_net_default_server && bp->server_ip)
@@ -243,8 +212,8 @@ grub_net_configure_by_dhcp_ack (const char *name,
if (size > OFFSET_OF (server_name, bp)
&& bp->server_name[0])
{
- set_env_limn_ro (name, "dhcp_server_name", (char *) bp->server_name,
- sizeof (bp->server_name));
+ grub_env_set_net_property (name, "dhcp_server_name", bp->server_name,
+ sizeof (bp->server_name));
if (is_def && !grub_net_default_server)
{
grub_net_default_server = grub_strdup (bp->server_name);
diff --git a/grub-core/net/drivers/ieee1275/ofnet.c b/grub-core/net/drivers/ieee1275/ofnet.c
index ceb5931..a079065 100644
--- a/grub-core/net/drivers/ieee1275/ofnet.c
+++ b/grub-core/net/drivers/ieee1275/ofnet.c
@@ -127,8 +127,111 @@ bootp_response_properties[] =
{ .name = "bootpreply-packet", .offset = 0x2a},
};
+enum
+{
+ BOOTARGS_SERVER_ADDR,
+ BOOTARGS_FILENAME,
+ BOOTARGS_CLIENT_ADDR,
+ BOOTARGS_GATEWAY_ADDR,
+ BOOTARGS_BOOTP_RETRIES,
+ BOOTARGS_TFTP_RETRIES,
+ BOOTARGS_SUBNET_MASK,
+ BOOTARGS_BLOCKSIZE
+};
+
+static int
+grub_ieee1275_parse_bootargs (const char *devpath, char *bootpath,
+ char **device, struct grub_net_card **card)
+{
+ char *args;
+ char *comma_char = 0;
+ char *equal_char = 0;
+ grub_size_t field_counter = 0;
+
+ grub_net_network_level_address_t client_addr, gateway_addr, subnet_mask;
+ grub_net_link_level_address_t hw_addr;
+ grub_net_interface_flags_t flags = 0;
+ struct grub_net_network_level_interface *inter;
+
+ hw_addr.type = GRUB_NET_LINK_LEVEL_PROTOCOL_ETHERNET;
+
+ args = bootpath + grub_strlen (devpath) + 1;
+ do
+ {
+ comma_char = grub_strchr (args, ',');
+ if (comma_char != 0)
+ *comma_char = 0;
+
+ /* Check if it's an option (like speed=auto) and not a default parameter */
+ equal_char = grub_strchr (args, '=');
+ if (equal_char != 0)
+ {
+ *equal_char = 0;
+ grub_env_set_net_property ((*card)->name, args, equal_char + 1,
+ grub_strlen(equal_char + 1));
+ *equal_char = '=';
+ }
+ else
+ {
+ switch (field_counter++)
+ {
+ case BOOTARGS_SERVER_ADDR:
+ *device = grub_xasprintf ("tftp,%s", args);
+ if (!*device)
+ return grub_errno;
+ break;
+
+ case BOOTARGS_CLIENT_ADDR:
+ grub_net_resolve_address (args, &client_addr);
+ break;
+
+ case BOOTARGS_GATEWAY_ADDR:
+ grub_net_resolve_address (args, &gateway_addr);
+ break;
+
+ case BOOTARGS_SUBNET_MASK:
+ grub_net_resolve_address (args, &subnet_mask);
+ break;
+ }
+ }
+ args = comma_char + 1;
+ if (comma_char != 0)
+ *comma_char = ',';
+ } while (comma_char != 0);
+
+ if ((client_addr.ipv4 != 0) && (subnet_mask.ipv4 != 0))
+ {
+ grub_ieee1275_phandle_t devhandle;
+ grub_ieee1275_finddevice (devpath, &devhandle);
+ grub_ieee1275_get_property (devhandle, "mac-address",
+ hw_addr.mac, sizeof(hw_addr.mac), 0);
+ inter = grub_net_add_addr ((*card)->name, *card, &client_addr, &hw_addr,
+ flags);
+ grub_net_add_ipv4_local (inter,
+ __builtin_ctz (~grub_le_to_cpu32 (subnet_mask.ipv4)));
+ }
+
+ if (gateway_addr.ipv4 != 0)
+ {
+ grub_net_network_level_netaddress_t target;
+ char *rname;
+
+ target.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4;
+ target.ipv4.base = 0;
+ target.ipv4.masksize = 0;
+ rname = grub_xasprintf ("%s:default", ((*card)->name));
+ if (rname)
+ grub_net_add_route_gw (rname, target, gateway_addr);
+ else
+ return grub_errno;
+ }
+
+ return 0;
+}
+
static void
-grub_ieee1275_net_config_real (const char *devpath, char **device, char **path)
+grub_ieee1275_net_config_real (const char *devpath, char **device, char **path,
+ char *bootpath)
{
struct grub_net_card *card;
@@ -158,6 +261,8 @@ grub_ieee1275_net_config_real (const char *devpath, char **device, char **path)
}
grub_free (canon);
+ grub_ieee1275_parse_bootargs (devpath, bootpath, device, &card);
+
for (i = 0; i < ARRAY_SIZE (bootp_response_properties); i++)
if (grub_ieee1275_get_property_length (grub_ieee1275_chosen,
bootp_response_properties[i].name,
diff --git a/grub-core/net/net.c b/grub-core/net/net.c
index 0e57e93..8f9d183 100644
--- a/grub-core/net/net.c
+++ b/grub-core/net/net.c
@@ -1480,6 +1480,44 @@ receive_packets (struct grub_net_card *card, int *stop_condition)
grub_print_error ();
}
+static char *
+grub_env_write_readonly (struct grub_env_var *var __attribute__ ((unused)),
+ const char *val __attribute__ ((unused)))
+{
+ return NULL;
+}
+
+grub_err_t
+grub_env_set_net_property (const char *intername, const char *suffix,
+ const char *value, grub_size_t len)
+{
+ char *varname, *varvalue;
+ char *ptr;
+
+ varname = grub_xasprintf ("net_%s_%s", intername, suffix);
+ if (!varname)
+ return grub_errno;
+ for (ptr = varname; *ptr; ptr++)
+ if (*ptr == ':')
+ *ptr = '_';
+ varvalue = grub_malloc (len + 1);
+ if (!varvalue)
+ {
+ grub_free (varname);
+ return grub_errno;
+ }
+
+ grub_memcpy (varvalue, value, len);
+ varvalue[len] = 0;
+ grub_err_t ret = grub_env_set (varname, varvalue);
+ grub_register_variable_hook (varname, 0, grub_env_write_readonly);
+ grub_env_export (varname);
+ grub_free (varname);
+ grub_free (varvalue);
+
+ return ret;
+}
+
void
grub_net_poll_cards (unsigned time, int *stop_condition)
{
diff --git a/include/grub/ieee1275/ieee1275.h b/include/grub/ieee1275/ieee1275.h
index 7fefd16..f8b3d79 100644
--- a/include/grub/ieee1275/ieee1275.h
+++ b/include/grub/ieee1275/ieee1275.h
@@ -73,7 +73,8 @@ struct grub_ieee1275_devalias
extern void (*EXPORT_VAR(grub_ieee1275_net_config)) (const char *dev,
char **device,
- char **path);
+ char **path,
+ char *bootargs);
/* Maps a device alias to a pathname. */
extern grub_ieee1275_phandle_t EXPORT_VAR(grub_ieee1275_chosen);
diff --git a/include/grub/net.h b/include/grub/net.h
index de6259e..843f74f 100644
--- a/include/grub/net.h
+++ b/include/grub/net.h
@@ -480,6 +480,10 @@ grub_net_addr_to_str (const grub_net_network_level_address_t *target,
void
grub_net_hwaddr_to_str (const grub_net_link_level_address_t *addr, char *str);
+grub_err_t
+grub_env_set_net_property (const char *intername, const char *suffix,
+ const char *value, grub_size_t len);
+
void
grub_net_poll_cards (unsigned time, int *stop_condition);
--
1.9.3
