From: John Linn <john.linn@xilinx.com>
Date: Wed, 14 Jul 2010 19:04:34 +0000 (-0600)
Subject: Xilinx: ARM: Moved gem buffers and bds to bram to get around h/w problems
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b7d810f6120d65f0d514a9422810f382c3962f96;p=thirdparty%2Fu-boot.git

Xilinx: ARM: Moved gem buffers and bds to bram to get around h/w problems

The new peep design is not working in DDR yet for the GEM but it is working
in BRAM. Once DDR is working with GEM this commit can be reverted.
---

diff --git a/board/xilinx/dfe/xgmac.c b/board/xilinx/dfe/xgmac.c
index 69d4b63d6c3..d4aa01b006c 100644
--- a/board/xilinx/dfe/xgmac.c
+++ b/board/xilinx/dfe/xgmac.c
@@ -33,10 +33,18 @@ int Xgmac_phy_mgmt_idle(XEmacPss * EmacPssInstancePtr);
 /*
  * Aligned memory segments to be used for buffer descriptors
  */
+#define BRAM_BUFFERS
+#ifdef BRAM_BUFFERS
+static XEmacPss_Bd RxBdSpace[RXBD_CNT] __attribute__ ((section (".bram_buffers")));
+static XEmacPss_Bd TxBdSpace[TXBD_CNT] __attribute__ ((section (".bram_buffers")));
+static char RxBuffers[RXBD_CNT * XEMACPSS_RX_BUF_SIZE] __attribute__ ((section (".bram_buffers")));
+static uchar data_buffer[XEMACPSS_RX_BUF_SIZE] __attribute__ ((section (".bram_buffers")));
+#else
 static XEmacPss_Bd RxBdSpace[RXBD_CNT];
 static XEmacPss_Bd TxBdSpace[TXBD_CNT];
 static char RxBuffers[RXBD_CNT * XEMACPSS_RX_BUF_SIZE];
 static uchar data_buffer[XEMACPSS_RX_BUF_SIZE];
+#endif
 
 static struct {
 	u8 initialized;
diff --git a/cpu/arm_cortexa8/u-boot.lds b/cpu/arm_cortexa8/u-boot.lds
index 4f1711cca00..399f63c9509 100644
--- a/cpu/arm_cortexa8/u-boot.lds
+++ b/cpu/arm_cortexa8/u-boot.lds
@@ -55,4 +55,8 @@ SECTIONS
 	__bss_start = .;
 	.bss : { *(.bss) }
 	_end = .;
+
+	. = 0xFFFE0000;
+	. = ALIGN(4);
+	.bram_buffers (NOLOAD) : { *(.bram_buffers) }
 }