[U-Boot] [PATCH] arm: socfpga: correctly reserve SRAM for boot counter

[Goldschmidt Simon]

Bootcounter for is1 and sr1500 boards somewhat relied on struct global data alignment gap
at the end of internal SRAM. Let's fix this by explicitly reserving some bytes.

Signed-off-by: Simon Goldschmidt <sgoldschmidt at de.pepperl-fuchs.com>
---
 include/configs/socfpga_common.h | 6 +++++-
 include/configs/socfpga_is1.h    | 3 ++-
 include/configs/socfpga_sr1500.h | 3 ++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h
index 4de2aa7929..1934aea86d 100644
--- a/include/configs/socfpga_common.h
+++ b/include/configs/socfpga_common.h
@@ -35,8 +35,12 @@
 #define CONFIG_SYS_INIT_RAM_ADDR	0xFFE00000
 #define CONFIG_SYS_INIT_RAM_SIZE	0x40000 /* 256KB */
 #endif
+/* Reserve bytes at the end of SRAM? */
+#ifndef SOCFPGA_INIT_RAM_END_RESERVE
+#define SOCFPGA_INIT_RAM_END_RESERVE	0
+#endif
 #define CONFIG_SYS_INIT_SP_OFFSET		\
-	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+	(CONFIG_SYS_INIT_RAM_SIZE - SOCFPGA_INIT_RAM_END_RESERVE)
 #define CONFIG_SYS_INIT_SP_ADDR			\
 	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
 
diff --git a/include/configs/socfpga_is1.h b/include/configs/socfpga_is1.h
index c233c208a5..b243fd29cd 100644
--- a/include/configs/socfpga_is1.h
+++ b/include/configs/socfpga_is1.h
@@ -27,8 +27,9 @@
 #include <configs/socfpga_common.h>
 
 /*
- * Bootcounter
+ * Bootcounter (preserve the last 2 lwords for the boot-counter)
  */
+#define CONFIG_SYS_INIT_RAM_END_RESERVE	8
 #define CONFIG_SYS_BOOTCOUNT_BE
 
 #endif	/* __CONFIG_SOCFPGA_IS1_H__ */
diff --git a/include/configs/socfpga_sr1500.h b/include/configs/socfpga_sr1500.h
index c835d23235..ff71712566 100644
--- a/include/configs/socfpga_sr1500.h
+++ b/include/configs/socfpga_sr1500.h
@@ -26,8 +26,9 @@
 #define CONFIG_SPI_N25Q256A_RESET
 
 /*
- * Bootcounter
+ * Bootcounter (preserve the last 2 lwords for the boot-counter)
  */
+#define SOCFPGA_INIT_RAM_END_RESERVE	8
 #define CONFIG_SYS_BOOTCOUNT_BE
 
 /* Environment setting for SPI flash */
-- 
2.17.0.windows.1