[Qemu-devel] [PATCH v3 1/4] target-ppc: Extend rtas-blob

[Aravinda Prasad <aravinda@linux.vnet.ibm.com>]

Extend rtas-blob to accommodate error log. Error log
structure is saved in rtas space upon a machine check
exception.

Signed-off-by: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
---
 hw/ppc/spapr.c         |    7 +++++++
 include/hw/ppc/spapr.h |    5 +++++
 2 files changed, 12 insertions(+)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 30de25d..38e26af 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1431,6 +1431,13 @@ static void ppc_spapr_init(MachineState *machine)
 
     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "spapr-rtas.bin");
     spapr->rtas_size = get_image_size(filename);
+
+    /*
+     * Resize blob to accommodate error log. The layout of the rtas
+     * blob is defined in include/hw/ppc/spapr.h
+     */
+    spapr->rtas_size = TARGET_PAGE_ALIGN(spapr->rtas_size);
+
     spapr->rtas_blob = g_malloc(spapr->rtas_size);
     if (load_image_size(filename, spapr->rtas_blob, spapr->rtas_size) < 0) {
         hw_error("qemu: could not load LPAR rtas '%s'\n", filename);
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 749daf4..d08fcc2 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -480,4 +480,9 @@ int spapr_dma_dt(void *fdt, int node_off, const char *propname,
 int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,
                       sPAPRTCETable *tcet);
 
+/* RTAS Blob layout in memory */
+#define RTAS_ENTRY_OFFSET        0
+#define RTAS_TRAMPOLINE_OFFSET   0x200
+#define RTAS_ERRLOG_OFFSET       0x800
+
 #endif /* !defined (__HW_SPAPR_H__) */