ipl3: remove leftovers of stage1 stack in cache

boot/loader.c

@@ -246,11 +246,6 @@ void stage2(void)
 {
     debugf("Hello from RDRAM ", __builtin_frame_address(0));
 
-    // Invalidate the stack1 area, where the first stage put its stack.
-    // We don't need it anymore, and we don't want it to be flushed to RDRAM
-    // that will be cleared anyway.
-    data_cache_hit_invalidate(STACK1_BASE, STACK1_SIZE);
-
     // Search for the ELF header. We search for a 256-byte aligned header
     // starting at offset 0x1000 in the ROM area (after the IPL3).
     // We search for 64 MiB of ROM space (takes only a couple of seconds)

boot/loader.h

@@ -3,16 +3,9 @@
 
 // The loader is run directly from RDRAM for speed. We reserve a portion at
 // the end of RDRAM for it.
-#define LOADER_SIZE              (28*1024)
+#define LOADER_SIZE              (32*1024)
 
-// We put the first stage stack into the cache, at the same address as the loader.
-// We reserve 4 KiB to it.
-#define STACK1_SIZE              (4*1024)
-
-#define TOTAL_RESERVED_SIZE      (LOADER_SIZE + STACK1_SIZE)
-
-#define STACK1_BASE              (void*)(0x80800000 - LOADER_SIZE - STACK1_SIZE)
-#define STACK1_TOP               (void*)(0x80800000 - LOADER_SIZE)
+#define TOTAL_RESERVED_SIZE      (LOADER_SIZE)
 
 #define LOADER_BASE(memsize, stage2size)              (void*)(0x80000000 + (memsize) - (stage2size))
 #define STACK2_TOP(memsize, stage2size)               (LOADER_BASE(memsize, stage2size) - 16)

boot/loader_compat.c

@@ -36,11 +36,6 @@ static void pi_wait(void)
 __attribute__((used))
 void stage2(void)
 {
-    // Invalidate the stack1 area, where the first stage put its stack.
-    // We don't need it anymore, and we don't want it to be flushed to RDRAM
-    // that will be cleared anyway.
-    data_cache_hit_invalidate(STACK1_BASE, STACK1_SIZE);
-
     uint32_t entrypoint = io_read32(0x10000008);
     uint32_t size = io_read32(0x10000010);
     if (size == 0 || size > (8<<20) - (entrypoint & 0x1FFFFFFF) - TOTAL_RESERVED_SIZE)