From 302f05354f5aab340c315e0d04915367c65c6b27 Mon Sep 17 00:00:00 2001
From: Jens Wiklander <jens.wiklander@linaro.org>
Date: Mon, 17 Jan 2022 09:48:28 +0100
Subject: [PATCH] feat(qemu): support el3 spmc

Introduce additional defines needed when compiling the QEMU platform
with SPMC at EL3.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Change-Id: If6dbe41fa8761637e39579a1f6818dabc769c139
---
 plat/qemu/common/qemu_common.c        | 30 ++++++++++++++++++++++++-
 plat/qemu/qemu/include/platform_def.h | 32 +++++++++++++++++++++++++--
 2 files changed, 59 insertions(+), 3 deletions(-)

diff --git a/plat/qemu/common/qemu_common.c b/plat/qemu/common/qemu_common.c
index 0c184f49b..23ac5813e 100644
--- a/plat/qemu/common/qemu_common.c
+++ b/plat/qemu/common/qemu_common.c
@@ -10,6 +10,7 @@
 #include <arch_helpers.h>
 #include <common/bl_common.h>
 #include <lib/xlat_tables/xlat_tables_v2.h>
+#include <services/el3_spmc_ffa_memory.h>
 
 #include <plat/common/platform.h>
 #include "qemu_private.h"
@@ -100,7 +101,7 @@ static const mmap_region_t plat_qemu_mmap[] = {
 #if SPM_MM
 	MAP_NS_DRAM0,
 	QEMU_SPM_BUF_EL3_MMAP,
-#else
+#elif !SPMC_AT_EL3
 	MAP_BL32_MEM,
 #endif
 	{0}
@@ -167,3 +168,30 @@ int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
 	return get_mbedtls_heap_helper(heap_addr, heap_size);
 }
 #endif
+
+#if SPMC_AT_EL3
+/*
+ * When using the EL3 SPMC implementation allocate the datastore
+ * for tracking shared memory descriptors in normal memory.
+ */
+#define PLAT_SPMC_SHMEM_DATASTORE_SIZE 64 * 1024
+
+uint8_t plat_spmc_shmem_datastore[PLAT_SPMC_SHMEM_DATASTORE_SIZE];
+
+int plat_spmc_shmem_datastore_get(uint8_t **datastore, size_t *size)
+{
+	*datastore = plat_spmc_shmem_datastore;
+	*size = PLAT_SPMC_SHMEM_DATASTORE_SIZE;
+	return 0;
+}
+
+int plat_spmc_shmem_begin(struct ffa_mtd *desc)
+{
+	return 0;
+}
+
+int plat_spmc_shmem_reclaim(struct ffa_mtd *desc)
+{
+	return 0;
+}
+#endif
diff --git a/plat/qemu/qemu/include/platform_def.h b/plat/qemu/qemu/include/platform_def.h
index 490c2dc7c..18c57469f 100644
--- a/plat/qemu/qemu/include/platform_def.h
+++ b/plat/qemu/qemu/include/platform_def.h
@@ -188,8 +188,8 @@
 
 #define PLAT_PHY_ADDR_SPACE_SIZE	(1ULL << 32)
 #define PLAT_VIRT_ADDR_SPACE_SIZE	(1ULL << 32)
-#define MAX_MMAP_REGIONS		11
-#define MAX_XLAT_TABLES			6
+#define MAX_MMAP_REGIONS		(11 + MAX_MMAP_REGIONS_SPMC)
+#define MAX_XLAT_TABLES			(6 + MAX_XLAT_TABLES_SPMC)
 #define MAX_IO_DEVICES			4
 #define MAX_IO_HANDLES			4
 
@@ -280,4 +280,32 @@
  */
 #define	PLAT_EVENT_LOG_MAX_SIZE		UL(0x400)
 
+#if SPMC_AT_EL3
+/*
+ * Number of Secure Partitions supported.
+ * SPMC at EL3, uses this count to configure the maximum number of
+ * supported secure partitions.
+ */
+#define SECURE_PARTITION_COUNT		1
+
+/*
+ * Number of Logical Partitions supported.
+ * SPMC at EL3, uses this count to configure the maximum number of
+ * supported logical partitions.
+ */
+#define MAX_EL3_LP_DESCS_COUNT		0
+
+/*
+ * Number of Normal World Partitions supported.
+ * SPMC at EL3, uses this count to configure the maximum number of
+ * supported normal world partitions.
+ */
+#define NS_PARTITION_COUNT		1
+
+#define MAX_MMAP_REGIONS_SPMC		2
+#define MAX_XLAT_TABLES_SPMC		4
+#else
+#define MAX_MMAP_REGIONS_SPMC		0
+#define MAX_XLAT_TABLES_SPMC		0
+#endif
 #endif /* PLATFORM_DEF_H */
-- 
2.39.5