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authorAaron Durbin <adurbin@chromium.org>2014-09-18 14:23:59 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-03-28 07:05:36 +0100
commite702be692b438843c94a8dcd314f0891f2743224 (patch)
tree65727940959164397fc7bb1717e600b5be0cd751 /src/arch/arm64/armv8
parentdee1996d6c3b4006f4e1d93ab1ffbcb98e30800f (diff)
downloadcoreboot-e702be692b438843c94a8dcd314f0891f2743224.tar.xz
arm64: initialize secmon environment
The exception vectors were not reinitialized in secmon yet. Add that as well as the split BSP vs non-BSP path. In doing so bring in the cpu.c semantics for determining bsp at runtime. BUG=chrome-os-partner:30785 BRANCH=None TEST=Built and booted to kernel. Also noted only one CPU printing messages. Change-Id: I26a7f9446f4422d2203b1d520e69f8dee9450b59 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 67f79c61c902ee614f029047255b4be35112cd32 Original-Change-Id: Ide66f13c24f5798d5983c481ce616ae2800d558c Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/218845 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9091 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/arch/arm64/armv8')
-rw-r--r--src/arch/arm64/armv8/secmon/Makefile.inc2
-rw-r--r--src/arch/arm64/armv8/secmon/secmon_init.c45
-rw-r--r--src/arch/arm64/armv8/secmon_loader.c16
3 files changed, 43 insertions, 20 deletions
diff --git a/src/arch/arm64/armv8/secmon/Makefile.inc b/src/arch/arm64/armv8/secmon/Makefile.inc
index b140941e8b..5dadfa9a63 100644
--- a/src/arch/arm64/armv8/secmon/Makefile.inc
+++ b/src/arch/arm64/armv8/secmon/Makefile.inc
@@ -32,6 +32,8 @@ secmon-c-ccopts += -I$(src)/arch/arm64/include/armv8/ -include $(src)/include/kc
secmon-S-ccopts += -I$(src)/arch/arm64/include/armv8/ -include $(src)/include/kconfig.h -D__SECMON__
secmon-y += secmon_init.c
+secmon-y += ../exception.c
+secmon-y += ../../cpu.c
secmon-y += ../../transition_asm.S ../../transition.c
ramstage-srcs += $(SECMON_SRC)
diff --git a/src/arch/arm64/armv8/secmon/secmon_init.c b/src/arch/arm64/armv8/secmon/secmon_init.c
index e8bdd82d29..660d6d432b 100644
--- a/src/arch/arm64/armv8/secmon/secmon_init.c
+++ b/src/arch/arm64/armv8/secmon/secmon_init.c
@@ -21,6 +21,7 @@
#include <arch/barrier.h>
#include <arch/io.h>
+#include <arch/exception.h>
#include <arch/lib_helpers.h>
#include <arch/secmon.h>
#include <arch/transition.h>
@@ -28,14 +29,15 @@
#include <rmodule.h>
#include <stddef.h>
-static void secmon_wait(void)
+static void cpu_init(int bsp)
{
- /*
- * TODO(furquan): This should be a point of no-return. Once we have PSCI
- * support we need to respond to kernel calls
- */
- while (1)
- wfe();
+ struct cpu_info *ci = cpu_info();
+
+ ci->id = smp_processor_id();
+ cpu_mark_online(ci);
+
+ if (bsp)
+ cpu_set_bsp();
}
static void secmon_el3_init(void)
@@ -52,12 +54,12 @@ static void secmon_el3_init(void)
isb();
}
-static void secmon_init(void *arg)
+static void secmon_init(struct secmon_params *params, int bsp)
{
struct exc_state exc_state;
- struct secmon_params *params = arg;
- printk(BIOS_DEBUG, "ARM64: secmon in %s\n", __func__);
+ exception_hwinit();
+ cpu_init(bsp);
secmon_el3_init();
@@ -66,18 +68,29 @@ static void secmon_init(void *arg)
* 1) If yes, we make an EL2 transition to that entry point
* 2) If no, we just wait
*/
- if (params == NULL) {
- secmon_wait();
+ if (params != NULL) {
+ memset(&exc_state, 0, sizeof(exc_state));
+ exc_state.elx.spsr =
+ get_eret_el(params->elx_el, params->elx_mode);
+
+ transition_with_entry(params->entry, params->arg, &exc_state);
}
- memset(&exc_state, 0, sizeof(exc_state));
- exc_state.elx.spsr = get_eret_el(params->elx_el, params->elx_mode);
+ arch_cpu_wait_for_action();
+}
- transition_with_entry(params->entry, params->arg, &exc_state);
+static void secmon_init_bsp(void *arg)
+{
+ secmon_init(arg, 1);
+}
+
+static void secmon_init_nonbsp(void *arg)
+{
+ secmon_init(arg, 0);
}
/*
* This variable holds entry point for secmon init code. Once the stacks are
* setup by the stage_entry.S, it jumps to c_entry.
*/
-void (*c_entry)(void*) = &secmon_init;
+void (*c_entry[2])(void*) = { &secmon_init_bsp, &secmon_init_nonbsp };
diff --git a/src/arch/arm64/armv8/secmon_loader.c b/src/arch/arm64/armv8/secmon_loader.c
index 4d83764234..e571b51a6a 100644
--- a/src/arch/arm64/armv8/secmon_loader.c
+++ b/src/arch/arm64/armv8/secmon_loader.c
@@ -25,6 +25,7 @@
#include <arch/lib_helpers.h>
#include <arch/secmon.h>
#include <arch/spintable.h>
+#include <arch/stages.h>
#include <console/console.h>
#include <rmodule.h>
#include <string.h>
@@ -85,15 +86,22 @@ struct secmon_runit {
static void secmon_start(void *arg)
{
uint32_t scr;
+ secmon_entry_t entry;
struct secmon_params *p = NULL;
struct secmon_runit *r = arg;
+ entry = r->entry;
+
if (cpu_is_bsp())
p = &r->bsp_params;
- else if (r->secondary_params.entry != NULL)
- p = &r->secondary_params;
+ else {
+ entry = secondary_entry_point(entry);
+ if (r->secondary_params.entry != NULL)
+ p = &r->secondary_params;
+ }
- printk(BIOS_DEBUG, "CPU%x entering secure monitor.\n", cpu_info()->id);
+ printk(BIOS_DEBUG, "CPU%x entering secure monitor %p.\n",
+ cpu_info()->id, entry);
/* We want to enforce the following policies:
* NS bit is set for lower EL
@@ -102,7 +110,7 @@ static void secmon_start(void *arg)
scr |= SCR_NS;
raw_write_scr_el3(scr);
- r->entry(p);
+ entry(p);
}
void secmon_run(void (*entry)(void *), void *cb_tables)