Merge branch '2021-09-23-assorted-updates' into next

- Rework lmb reservation so we have common code for all arches to use
- armv8 cache.S cleanups, crc32 speedup
- ENV_IS_NOWHWERE, pci io/memory base configuration fixes

2 files changed, 43 insertions, 1 deletions

diff --git a/lib/crc32.c b/lib/crc32.c
index f2acc107fe4..5a3127e03ad 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -84,7 +84,7 @@ static void __efi_runtime make_crc_table(void)
   }
   crc_table_empty = 0;
 }
-#else
+#elif !defined(CONFIG_ARM64_CRC32)
 /* ========================================================================
  * Table of CRC-32's of all single-byte values (made by make_crc_table)
  */
@@ -184,6 +184,12 @@ const uint32_t * ZEXPORT get_crc_table()
  */
 uint32_t __efi_runtime crc32_no_comp(uint32_t crc, const Bytef *buf, uInt len)
 {
+#ifdef CONFIG_ARM64_CRC32
+    crc = cpu_to_le32(crc);
+    while (len--)
+        crc = __builtin_aarch64_crc32b(crc, *buf++);
+    return le32_to_cpu(crc);
+#else
     const uint32_t *tab = crc_table;
     const uint32_t *b =(const uint32_t *)buf;
     size_t rem_len;
@@ -221,6 +227,7 @@ uint32_t __efi_runtime crc32_no_comp(uint32_t crc, const Bytef *buf, uInt len)
     }
 
     return le32_to_cpu(crc);
+#endif
 }
 #undef DO_CRC
 
diff --git a/lib/lmb.c b/lib/lmb.c
index 7bd1255f7a4..793647724c3 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -12,6 +12,10 @@
 #include <log.h>
 #include <malloc.h>
 
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
 #define LMB_ALLOC_ANYWHERE	0
 
 static void lmb_dump_region(struct lmb_region *rgn, char *name)
@@ -113,6 +117,37 @@ void lmb_init(struct lmb *lmb)
 	lmb->reserved.cnt = 0;
 }
 
+void arch_lmb_reserve_generic(struct lmb *lmb, ulong sp, ulong end, ulong align)
+{
+	ulong bank_end;
+	int bank;
+
+	/*
+	 * Reserve memory from aligned address below the bottom of U-Boot stack
+	 * until end of U-Boot area using LMB to prevent U-Boot from overwriting
+	 * that memory.
+	 */
+	debug("## Current stack ends at 0x%08lx ", sp);
+
+	/* adjust sp by 4K to be safe */
+	sp -= align;
+	for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
+		if (!gd->bd->bi_dram[bank].size ||
+		    sp < gd->bd->bi_dram[bank].start)
+			continue;
+		/* Watch out for RAM at end of address space! */
+		bank_end = gd->bd->bi_dram[bank].start +
+			gd->bd->bi_dram[bank].size - 1;
+		if (sp > bank_end)
+			continue;
+		if (bank_end > end)
+			bank_end = end - 1;
+
+		lmb_reserve(lmb, sp, bank_end - sp + 1);
+		break;
+	}
+}
+
 static void lmb_reserve_common(struct lmb *lmb, void *fdt_blob)
 {
 	arch_lmb_reserve(lmb);