Juno: Add support for image overlaying in Trusted SRAM
This patch allows the BL3-1 NOBITS section to overlap the BL1 R/W
section since the former will always be used after the latter.
Similarly, the BL3-2 NOBITS section can overlay the BL2 image
when BL3-2 is loaded in Trusted SRAM.
Due to the current size of the images, there is no actual overlap.
Nevertheless, this reorganization may help to optimise the Trusted
SRAM usage when the images size grows.
Note that because BL3-1 NOBITS section is allowed to overlap the
BL1 R/W section, BL1 global variables will remain valid only until
execution reaches the BL3-1 entry point during a cold boot.
Documentation updated accordingly.
Fixes ARM-software/tf-issues#254
Change-Id: Id538f4d1c7f1f7858108280fd7b97e138572b879
diff --git a/plat/juno/juno_def.h b/plat/juno/juno_def.h
index 88e35b0..cfcbe0b 100644
--- a/plat/juno/juno_def.h
+++ b/plat/juno/juno_def.h
@@ -37,6 +37,21 @@
/*******************************************************************************
* Juno memory map related constants
******************************************************************************/
+#define FLASH_BASE 0x08000000
+#define FLASH_SIZE 0x04000000
+
+/* Bypass offset from start of NOR flash */
+#define BL1_ROM_BYPASS_OFFSET 0x03EC0000
+
+#ifndef TZROM_BASE
+/* Use the bypass address */
+#define TZROM_BASE FLASH_BASE + BL1_ROM_BYPASS_OFFSET
+#endif
+#define TZROM_SIZE 0x00010000
+
+#define TZRAM_BASE 0x04001000
+#define TZRAM_SIZE 0x0003F000
+
#define PLAT_TRUSTED_SRAM_ID 0
#define PLAT_DRAM_ID 1