plat/sgi: allow access to TZC controller on all chips
On a multi-chip platform, the boot CPU on the first chip programs the
TZC controllers on all the remote chips. Define a memory region map for
the TZC controllers for all the remote chips and include it in the BL2
memory map table.
In addition to this, for SPM_MM enabled multi-chip platforms, increase
the number of mmap entries and xlat table counts for EL3 execution
context as well because the shared RAM regions and GIC address space of
remote chips are accessed.
Signed-off-by: Aditya Angadi <aditya.angadi@arm.com>
Change-Id: I6f0b5fd22f9f28046451e382eef7f1f9258d88f7
diff --git a/plat/arm/css/sgi/include/sgi_base_platform_def.h b/plat/arm/css/sgi/include/sgi_base_platform_def.h
index aca70f1..6bcdabd 100644
--- a/plat/arm/css/sgi/include/sgi_base_platform_def.h
+++ b/plat/arm/css/sgi/include/sgi_base_platform_def.h
@@ -26,12 +26,15 @@
/*
* PLAT_ARM_MMAP_ENTRIES depends on the number of entries in the
- * plat_arm_mmap array defined for each BL stage.
+ * plat_arm_mmap array defined for each BL stage. In addition to that, on
+ * multi-chip platforms, address regions on each of the remote chips are
+ * also mapped. In BL31, for instance, three address regions on the remote
+ * chips are accessed - secure ram, css device and soc device regions.
*/
#if defined(IMAGE_BL31)
# if SPM_MM
-# define PLAT_ARM_MMAP_ENTRIES 9
-# define MAX_XLAT_TABLES 7
+# define PLAT_ARM_MMAP_ENTRIES (9 + ((CSS_SGI_CHIP_COUNT - 1) * 3))
+# define MAX_XLAT_TABLES (7 + ((CSS_SGI_CHIP_COUNT - 1) * 3))
# define PLAT_SP_IMAGE_MMAP_REGIONS 9
# define PLAT_SP_IMAGE_MAX_XLAT_TABLES 10
# else
@@ -41,6 +44,17 @@
#elif defined(IMAGE_BL32)
# define PLAT_ARM_MMAP_ENTRIES 8
# define MAX_XLAT_TABLES 5
+#elif defined(IMAGE_BL2)
+# define PLAT_ARM_MMAP_ENTRIES (11 + (CSS_SGI_CHIP_COUNT - 1))
+
+/*
+ * MAX_XLAT_TABLES entries need to be doubled because when the address width
+ * exceeds 40 bits an additional level of translation is required. In case of
+ * multichip platforms peripherals also fall into address space with width
+ * > 40 bits
+ *
+ */
+# define MAX_XLAT_TABLES (7 + ((CSS_SGI_CHIP_COUNT - 1) * 2))
#elif !USE_ROMLIB
# define PLAT_ARM_MMAP_ENTRIES 11
# define MAX_XLAT_TABLES 7
@@ -69,12 +83,17 @@
/*
* PLAT_ARM_MAX_BL2_SIZE is calculated using the current BL2 debug size plus a
- * little space for growth.
+ * little space for growth. Additional 8KiB space is added per chip in
+ * order to accommodate the additional level of translation required for "TZC"
+ * peripheral access which lies in >4TB address space.
+ *
*/
#if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL2_SIZE 0x1D000
+# define PLAT_ARM_MAX_BL2_SIZE (0x1D000 + ((CSS_SGI_CHIP_COUNT - 1) * \
+ 0x2000))
#else
-# define PLAT_ARM_MAX_BL2_SIZE 0x14000
+# define PLAT_ARM_MAX_BL2_SIZE (0x14000 + ((CSS_SGI_CHIP_COUNT - 1) * \
+ 0x2000))
#endif
/*