@@ -23,6 +23,7 @@
#include <opal.h>
#include <opal-dump.h>
#include <opal-internal.h>
+#include <sbe-p9.h>
#include <skiboot.h>
#include <ccan/endian/endian.h>
@@ -348,6 +349,9 @@ void opal_fadump_init(void)
adjust_opal_dump_size(dump_node);
+ /* Send OPAL relocated base address to SBE */
+ p9_sbe_send_relocated_base(SKIBOOT_BASE);
+
/* OPAL interface */
opal_register(OPAL_FADUMP_MANAGE, opal_fadump_manage, 3);
}
@@ -861,6 +861,37 @@ bool p9_sbe_timer_ok(void)
return sbe_has_timer;
}
+static void p9_sbe_stash_chipop_resp(struct p9_sbe_msg *msg)
+{
+ int rc = p9_sbe_get_primary_rc(msg->resp);
+
+ if (rc == SBE_STATUS_PRI_SUCCESS) {
+ prlog(PR_DEBUG, "Sent stash MPIPL config\n");
+ } else {
+ prlog(PR_DEBUG,
+ "Failed to send stash MPIPL config [rc = 0x%x]\n", rc);
+ }
+
+ p9_sbe_freemsg(msg);
+}
+
+void p9_sbe_send_relocated_base(uint64_t val)
+{
+ u8 key = SBE_STASH_KEY_SKIBOOT_BASE;
+ u16 cmd = SBE_CMD_STASH_MPIPL_CONFIG;
+ u16 flag = SBE_CMD_CTRL_RESP_REQ;
+ struct p9_sbe_msg *msg;
+
+ msg = p9_sbe_mkmsg(cmd, flag, key, val, 0);
+ if (!msg) {
+ prlog(PR_DEBUG, "Message allocation failed\n");
+ return;
+ }
+ if (p9_sbe_queue_msg(sbe_default_chip_id, msg, p9_sbe_stash_chipop_resp)) {
+ prlog(PR_ERR, "Failed to queue stash MPIPL config message\n");
+ }
+}
+
void p9_sbe_init(void)
{
struct dt_node *xn;
@@ -159,6 +159,9 @@
#define CONTROL_TIMER_START 0x0001
#define CONTROL_TIMER_STOP 0x0002
+/* Stash MPIPL config */
+#define SBE_STASH_KEY_SKIBOOT_BASE 0x03
+
/* SBE message state */
enum p9_sbe_msg_state {
sbe_msg_unused = 0, /* Free */
@@ -237,4 +240,7 @@ extern bool p9_sbe_timer_ok(void);
/* Update SBE timer expiry */
extern void p9_sbe_update_timer_expiry(uint64_t new_target);
+/* Send skiboot relocated base address to SBE */
+extern void p9_sbe_send_relocated_base(uint64_t val);
+
#endif /* __SBE_P9_H */
OPAL relocates itself during boot. During memory preserving IPL hostboot needs to access relocated OPAL to get MDST, MDDT tables. Hence send relocated base address to SBE via 'stash MPIPL config' chip-op. During next IPL SBE will send stashed data to hostboot... so that hostboot can access these data. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> --- core/opal-mpipl.c | 4 ++++ hw/sbe-p9.c | 31 +++++++++++++++++++++++++++++++ include/sbe-p9.h | 6 ++++++ 3 files changed, 41 insertions(+)