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[U-Boot,v4,2/16] bch: Allow to build for the host

Message ID 53f1f7ee56756fc2e8a90ff347d0cde691103f10.1485179128.git-series.maxime.ripard@free-electrons.com
State Superseded
Delegated to: Jagannadha Sutradharudu Teki
Headers show

Commit Message

Maxime Ripard Jan. 23, 2017, 1:46 p.m. UTC 
We will need the bch functions in the tool to generate the SPL images for
the Allwinner SoCs.

Do the needed adjustments so that we can use it on the host.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
---
 lib/bch.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+), 0 deletions(-)
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Patch

diff --git a/lib/bch.c b/lib/bch.c
index 147715afd06a..ec53483774b5 100644
--- a/lib/bch.c
+++ b/lib/bch.c
@@ -54,10 +54,27 @@ 
  * finite fields GF(2^q). In Rapport de recherche INRIA no 2829, 1996.
  */
 
+#ifndef USE_HOSTCC
 #include <common.h>
 #include <ubi_uboot.h>
 
 #include <linux/bitops.h>
+#else
+#include <errno.h>
+#include <endian.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#undef cpu_to_be32
+#define cpu_to_be32 htobe32
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+#define kmalloc(size, flags)	malloc(size)
+#define kzalloc(size, flags)	calloc(1, size)
+#define kfree free
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#endif
+
 #include <asm/byteorder.h>
 #include <linux/bch.h>
 
@@ -95,6 +112,37 @@  struct gf_poly_deg1 {
 	unsigned int   c[2];
 };
 
+#ifdef USE_HOSTCC
+static int fls(int x)
+{
+	int r = 32;
+
+	if (!x)
+		return 0;
+	if (!(x & 0xffff0000u)) {
+		x <<= 16;
+		r -= 16;
+	}
+	if (!(x & 0xff000000u)) {
+		x <<= 8;
+		r -= 8;
+	}
+	if (!(x & 0xf0000000u)) {
+		x <<= 4;
+		r -= 4;
+	}
+	if (!(x & 0xc0000000u)) {
+		x <<= 2;
+		r -= 2;
+	}
+	if (!(x & 0x80000000u)) {
+		x <<= 1;
+		r -= 1;
+	}
+	return r;
+}
+#endif
+
 /*
  * same as encode_bch(), but process input data one byte at a time
  */