ARM: OMAP: sram: skip the first 16K on OMAP3 HS

[firefly-linux-kernel-4.4.55.git] / arch / arm / plat-omap / sram.c

diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index 85c23db250346794387fcbeb266fe2ca6416b703..024f3b08db29b0046a58457120259e7b5366a1ca 100644 (file)
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -68,6 +68,7 @@
 
 static unsigned long omap_sram_start;
 static void __iomem *omap_sram_base;
+static unsigned long omap_sram_skip;
 static unsigned long omap_sram_size;
 static void __iomem *omap_sram_ceil;
 
@@ -106,6 +107,7 @@ static int is_sram_locked(void)
  */
 static void __init omap_detect_sram(void)
 {
+       omap_sram_skip = SRAM_BOOTLOADER_SZ;
        if (cpu_class_is_omap2()) {
                if (is_sram_locked()) {
                        if (cpu_is_omap34xx()) {
@@ -113,6 +115,7 @@ static void __init omap_detect_sram(void)
                                if ((omap_type() == OMAP2_DEVICE_TYPE_EMU) ||
                                    (omap_type() == OMAP2_DEVICE_TYPE_SEC)) {
                                        omap_sram_size = 0x7000; /* 28K */
+                                       omap_sram_skip += SZ_16K;
                                } else {
                                        omap_sram_size = 0x8000; /* 32K */
                                }
@@ -205,8 +208,8 @@ static void __init omap_map_sram(void)
         * Looks like we need to preserve some bootloader code at the
         * beginning of SRAM for jumping to flash for reboot to work...
         */
-       memset_io(omap_sram_base + SRAM_BOOTLOADER_SZ, 0,
-                 omap_sram_size - SRAM_BOOTLOADER_SZ);
+       memset_io(omap_sram_base + omap_sram_skip, 0,
+                 omap_sram_size - omap_sram_skip);
 }
 
 /*
@@ -220,7 +223,7 @@ void *omap_sram_push_address(unsigned long size)
 {
        unsigned long available, new_ceil = (unsigned long)omap_sram_ceil;
 
-       available = omap_sram_ceil - (omap_sram_base + SRAM_BOOTLOADER_SZ);
+       available = omap_sram_ceil - (omap_sram_base + omap_sram_skip);
 
        if (size > available) {
                pr_err("Not enough space in SRAM\n");