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authorTom Rini <trini@konsulko.com>2015-04-29 06:46:33 -0400
committerTom Rini <trini@konsulko.com>2015-04-29 06:46:33 -0400
commitace97d26176a3ebc9ec07738450de93eea35975c (patch)
tree7de5b3cdc2f269ae1426540ae9f74b420423f132 /arch/arm/cpu/armv7/zynq/ddrc.c
parent1692515e51a190b2ad1e2c54fdaa15fbb8387ba7 (diff)
parent5ca269a4df21a7e326eb3b3f7788177d064fe782 (diff)
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Merge branch 'zynq' of git://www.denx.de/git/u-boot-microblaze
Diffstat (limited to 'arch/arm/cpu/armv7/zynq/ddrc.c')
-rw-r--r--arch/arm/cpu/armv7/zynq/ddrc.c50
1 files changed, 0 insertions, 50 deletions
diff --git a/arch/arm/cpu/armv7/zynq/ddrc.c b/arch/arm/cpu/armv7/zynq/ddrc.c
deleted file mode 100644
index 5b20acc..0000000
--- a/arch/arm/cpu/armv7/zynq/ddrc.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2012 - 2013 Michal Simek <monstr@monstr.eu>
- * Copyright (C) 2012 - 2013 Xilinx, Inc. All rights reserved.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/sys_proto.h>
-#include <asm/arch/hardware.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* Control regsiter bitfield definitions */
-#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_MASK 0xC
-#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_SHIFT 2
-#define ZYNQ_DDRC_CTRLREG_BUSWIDTH_16BIT 1
-
-/* ECC scrub regsiter definitions */
-#define ZYNQ_DDRC_ECC_SCRUBREG_ECC_MODE_MASK 0x7
-#define ZYNQ_DDRC_ECC_SCRUBREG_ECCMODE_SECDED 0x4
-
-void zynq_ddrc_init(void)
-{
- u32 width, ecctype;
-
- width = readl(&ddrc_base->ddrc_ctrl);
- width = (width & ZYNQ_DDRC_CTRLREG_BUSWIDTH_MASK) >>
- ZYNQ_DDRC_CTRLREG_BUSWIDTH_SHIFT;
- ecctype = (readl(&ddrc_base->ecc_scrub) &
- ZYNQ_DDRC_ECC_SCRUBREG_ECC_MODE_MASK);
-
- /* ECC is enabled when memory is in 16bit mode and it is enabled */
- if ((ecctype == ZYNQ_DDRC_ECC_SCRUBREG_ECCMODE_SECDED) &&
- (width == ZYNQ_DDRC_CTRLREG_BUSWIDTH_16BIT)) {
- puts("ECC enabled ");
- /*
- * Clear the first 1MB because it is not initialized from
- * first stage bootloader. To get ECC to work all memory has
- * been initialized by writing any value.
- */
- /* cppcheck-suppress nullPointer */
- memset((void *)0, 0, 1 * 1024 * 1024);
-
- gd->ram_size /= 2;
- } else {
- puts("ECC disabled ");
- }
-}