From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Fri, 8 Aug 2014 11:23:57 +0000 (+0800)
Subject: sdramphy/bios: make sdrrd/sdrwr generic
X-Git-Tag: 24jan2021_ls180~2680
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=293ac09673788a1067280d6db3413ea89f60c4fb;p=litex.git

sdramphy/bios: make sdrrd/sdrwr generic
---

diff --git a/misoclib/sdramphy/initsequence.py b/misoclib/sdramphy/initsequence.py
index a678bd64..0d2c553a 100644
--- a/misoclib/sdramphy/initsequence.py
+++ b/misoclib/sdramphy/initsequence.py
@@ -3,11 +3,14 @@ from migen.fhdl.std import log2_int
 def get_sdram_phy_header(sdram_phy):
 	r = "#ifndef __GENERATED_SDRAM_PHY_H\n#define __GENERATED_SDRAM_PHY_H\n"
 	r += "#include <hw/common.h>\n#include <generated/csr.h>\n#include <hw/flags.h>\n\n"
+	
+	nphases = sdram_phy.phy_settings.nphases
+	r += "#define DFII_NPHASES "+str(nphases)+"\n\n"
 
 	r += "static void cdelay(int i);\n"
 
 	# commands_px functions
-	for n in range(sdram_phy.phy_settings.nphases):
+	for n in range(nphases):
 		r += """
 static void command_p{n}(int cmd)
 {{
@@ -28,7 +31,32 @@ static void command_p{n}(int cmd)
 #define command_pwr(X) command_p{wrphase}(X)
 """.format(rdphase=str(sdram_phy.phy_settings.rdphase), wrphase=str(sdram_phy.phy_settings.wrphase)) 
 	r +="\n"
-	
+
+	#
+	# sdrrd/sdrwr functions utilities
+	#
+	r += "#define DFII_PIX_WRDATA_SIZE CSR_DFII_PI0_WRDATA_SIZE\n"
+	dfii_pix_wrdata_addr = []
+	for n in range(nphases):
+		dfii_pix_wrdata_addr.append("CSR_DFII_PI{n}_WRDATA_ADDR".format(n=n))
+	r += """
+const unsigned int dfii_pix_wrdata_addr[{n}] = {{
+	{dfii_pix_wrdata_addr}
+}};
+""".format(n=nphases, dfii_pix_wrdata_addr=",\n\t".join(dfii_pix_wrdata_addr))
+	r +="\n"
+
+	r += "#define DFII_PIX_RDDATA_SIZE CSR_DFII_PI0_RDDATA_SIZE\n"
+	dfii_pix_rddata_addr = []
+	for n in range(nphases):
+		dfii_pix_rddata_addr.append("CSR_DFII_PI{n}_RDDATA_ADDR".format(n=n))
+	r += """
+const unsigned int dfii_pix_rddata_addr[{n}] = {{
+	{dfii_pix_rddata_addr}
+}};
+""".format(n=nphases, dfii_pix_rddata_addr=",\n\t".join(dfii_pix_rddata_addr))
+	r +="\n"
+
 	# init sequence
 	cmds = {
 		"PRECHARGE_ALL" : "DFII_COMMAND_RAS|DFII_COMMAND_WE|DFII_COMMAND_CS",
diff --git a/software/bios/sdram.c b/software/bios/sdram.c
index 1f862a63..61cef94d 100644
--- a/software/bios/sdram.c
+++ b/software/bios/sdram.c
@@ -66,6 +66,7 @@ void sdrrd(char *startaddr)
 	char *c;
 	unsigned int addr;
 	int i;
+	int p;
 
 	if(*startaddr == 0) {
 		printf("sdrrd <address>\n");
@@ -82,11 +83,11 @@ void sdrrd(char *startaddr)
 	command_prd(DFII_COMMAND_CAS|DFII_COMMAND_CS|DFII_COMMAND_RDDATA);
 	cdelay(15);
 	
-	// FIXME
-	for(i=0;i<8;i++)
-		printf("%02x", MMPTR(0xe0001038+4*i));
-	for(i=0;i<8;i++)
-		printf("%02x", MMPTR(0xe000108c+4*i));
+	for(p=0;p<DFII_NPHASES;p++) {
+		for(i=0;i<DFII_PIX_RDDATA_SIZE;i++) {
+			printf("%02x", MMPTR(dfii_pix_rddata_addr[p]+4*i));
+		}
+	}
 	printf("\n");
 }
 
@@ -95,6 +96,7 @@ void sdrwr(char *startaddr)
 	char *c;
 	unsigned int addr;
 	int i;
+	int p;
 
 	if(*startaddr == 0) {
 		printf("sdrrd <address>\n");
@@ -105,11 +107,11 @@ void sdrwr(char *startaddr)
 		printf("incorrect address\n");
 		return;
 	}
-	
-	// FIXME
-	for(i=0;i<8;i++) {
-		MMPTR(0xe0001018+4*i) = i;
-		MMPTR(0xe000106c+4*i) = 0xf0 + i;
+
+	for(p=0;p<DFII_NPHASES;p++) {
+		for(i=0;i<DFII_PIX_WRDATA_SIZE;i++) {
+			MMPTR(dfii_pix_wrdata_addr[p]+4*i) = 0x10*p + i;
+		}
 	}
 	
 	dfii_piwr_address_write(addr);