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grub2/grub2-ppc64-cas-reboot-support.patch
Michael Chang 49eb9d2678 Accepting request 362771 from home:arvidjaar:grub2-next 
- new upstream version 2.02~beta3
  * highlights of user visible changes not yet present in openSUSE package
    - arm-uboot now generates position independent self relocating image, so
      single binary should run on all supported systems
    - loader for Xen on aarch64. grub-mkconfig support was not in time for
      beta3 yet.
    - improved ZFS support (extensible_dataset, large_blocks, embedded_data,
      hole_birth features)
    - support for IPv6 Router Advertisements
    - support for persistent memory (we do not overwrite it and pass correct
      information to OS)
    - try to display more specific icons for os-prober generated menu entries
    - grub-install detects EFI bit size and selects correct platform (x86_64-efi
      or i386-efi) independent of OS bit size; needs kernel 4.0 or higher.
    - LVM RAID1 support
    - xnu loader fixes which should make OS X menu entry generated by os-prober
      work again
    - ... and lot of fixes over entire tree

OBS-URL: https://build.opensuse.org/request/show/362771
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=205
2016-03-01 12:06:29 +00:00

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From 9d1411ffa7290c1cbdc9ee95bb5fcc5506e63e0f Mon Sep 17 00:00:00 2001
From: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
Date: Thu, 20 Sep 2012 18:07:39 -0300
Subject: [PATCH 096/152] IBM client architecture (CAS) reboot support
This is an implementation of IBM client architecture (CAS) reboot for GRUB.
There are cases where the POWER firmware must reboot in order to support
specific features requested by a kernel. The kernel calls
ibm,client-architecture-support and it may either return or reboot with the new
feature set. eg:
Calling ibm,client-architecture-support.../
Elapsed time since release of system processors: 70959 mins 50 secs
Welcome to GRUB!
Instead of return to the GRUB menu, it will check if the flag for CAS reboot is
set. If so, grub will automatically boot the last booted kernel using the same
parameters
---
grub-core/kern/ieee1275/openfw.c | 62 ++++++++++++++++++++++++++++++++++++++++
grub-core/normal/main.c | 19 ++++++++++++
grub-core/script/execute.c | 7 +++++
include/grub/ieee1275/ieee1275.h | 2 ++
4 files changed, 90 insertions(+)
Index: grub-2.02~beta2/grub-core/kern/ieee1275/openfw.c
===================================================================
--- grub-2.02~beta2.orig/grub-core/kern/ieee1275/openfw.c 2016-01-29 23:08:47.560532720 +0300
+++ grub-2.02~beta2/grub-core/kern/ieee1275/openfw.c 2016-01-29 23:08:47.556532720 +0300
@@ -590,3 +590,65 @@
return NULL;
}
+/* Check if it's a CAS reboot. If so, set the script to be executed. */
+int
+grub_ieee1275_cas_reboot (char *script)
+{
+ grub_uint32_t ibm_ca_support_reboot;
+ grub_uint32_t ibm_fw_nbr_reboots;
+ char property_value[10];
+ grub_ssize_t actual;
+ grub_ieee1275_ihandle_t options;
+
+ if (grub_ieee1275_finddevice ("/options", &options) < 0)
+ return -1;
+
+ /* Check two properties, one is enough to get cas reboot value */
+ ibm_ca_support_reboot = 0;
+ if (grub_ieee1275_get_integer_property (grub_ieee1275_chosen,
+ "ibm,client-architecture-support-reboot",
+ &ibm_ca_support_reboot,
+ sizeof (ibm_ca_support_reboot),
+ &actual) >= 0)
+ grub_dprintf("ieee1275", "ibm,client-architecture-support-reboot: %u\n",
+ ibm_ca_support_reboot);
+
+ ibm_fw_nbr_reboots = 0;
+ if (grub_ieee1275_get_property (options, "ibm,fw-nbr-reboots",
+ property_value, sizeof (property_value),
+ &actual) >= 0)
+ {
+ property_value[sizeof (property_value) - 1] = 0;
+ ibm_fw_nbr_reboots = (grub_uint8_t) grub_strtoul (property_value, 0, 10);
+ grub_dprintf("ieee1275", "ibm,fw-nbr-reboots: %u\n", ibm_fw_nbr_reboots);
+ }
+
+ if (ibm_ca_support_reboot || ibm_fw_nbr_reboots)
+ {
+ if (! grub_ieee1275_get_property_length (options, "boot-last-label", &actual))
+ {
+ if (actual > 1024)
+ script = grub_realloc (script, actual + 1);
+ grub_ieee1275_get_property (options, "boot-last-label", script, actual,
+ &actual);
+ return 0;
+ }
+ }
+
+ grub_ieee1275_set_boot_last_label ("");
+
+ return -1;
+}
+
+int grub_ieee1275_set_boot_last_label (const char *text)
+{
+ grub_ieee1275_ihandle_t options;
+ grub_ssize_t actual;
+
+ grub_dprintf("ieee1275", "set boot_last_label (size: %" PRIxGRUB_SIZE ")\n", grub_strlen(text));
+ if (! grub_ieee1275_finddevice ("/options", &options) &&
+ options != (grub_ieee1275_ihandle_t) -1)
+ grub_ieee1275_set_property (options, "boot-last-label", text,
+ grub_strlen (text), &actual);
+ return 0;
+}
Index: grub-2.02~beta2/grub-core/normal/main.c
===================================================================
--- grub-2.02~beta2.orig/grub-core/normal/main.c 2016-01-29 23:08:47.560532720 +0300
+++ grub-2.02~beta2/grub-core/normal/main.c 2016-01-29 23:09:59.812533575 +0300
@@ -33,6 +33,9 @@
#include <grub/charset.h>
#include <grub/script_sh.h>
#include <grub/bufio.h>
+#ifdef GRUB_MACHINE_IEEE1275
+#include <grub/ieee1275/ieee1275.h>
+#endif
GRUB_MOD_LICENSE ("GPLv3+");
@@ -275,6 +278,21 @@
{
menu = read_config_file (config);
+#ifdef GRUB_MACHINE_IEEE1275
+ int boot;
+ boot = 0;
+ char *script;
+ script = grub_malloc (1024);
+ if (! grub_ieee1275_cas_reboot (script))
+ {
+ if (! grub_script_execute_sourcecode (script))
+ boot = 1;
+ }
+ grub_free (script);
+ if (boot)
+ grub_command_execute ("boot", 0, 0);
+#endif
+
/* Ignore any error. */
grub_errno = GRUB_ERR_NONE;
}
Index: grub-2.02~beta2/grub-core/script/execute.c
===================================================================
--- grub-2.02~beta2.orig/grub-core/script/execute.c 2016-01-29 23:08:47.560532720 +0300
+++ grub-2.02~beta2/grub-core/script/execute.c 2016-01-29 23:08:47.560532720 +0300
@@ -27,6 +27,9 @@
#include <grub/normal.h>
#include <grub/extcmd.h>
#include <grub/i18n.h>
+#ifdef GRUB_MACHINE_IEEE1275
+#include <grub/ieee1275/ieee1275.h>
+#endif
/* Max digits for a char is 3 (0xFF is 255), similarly for an int it
is sizeof (int) * 3, and one extra for a possible -ve sign. */
@@ -877,6 +880,10 @@
grub_err_t ret = 0;
struct grub_script *parsed_script;
+#ifdef GRUB_MACHINE_IEEE1275
+ grub_ieee1275_set_boot_last_label (source);
+#endif
+
while (source)
{
char *line;
Index: grub-2.02~beta2/include/grub/ieee1275/ieee1275.h
===================================================================
--- grub-2.02~beta2.orig/include/grub/ieee1275/ieee1275.h 2016-01-29 23:08:47.560532720 +0300
+++ grub-2.02~beta2/include/grub/ieee1275/ieee1275.h 2016-01-29 23:08:47.560532720 +0300
@@ -242,6 +242,8 @@
void EXPORT_FUNC(grub_ieee1275_children_peer) (struct grub_ieee1275_devalias *alias);
void EXPORT_FUNC(grub_ieee1275_children_first) (const char *devpath,
struct grub_ieee1275_devalias *alias);
+int EXPORT_FUNC(grub_ieee1275_cas_reboot) (char *script);
+int EXPORT_FUNC(grub_ieee1275_set_boot_last_label) (const char *text);
#define FOR_IEEE1275_DEVALIASES(alias) for (grub_ieee1275_devalias_init_iterator (&(alias)); grub_ieee1275_devalias_next (&(alias));)
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