From daff26b1da20309a9f728b0f3a760b128bcd013a Mon Sep 17 00:00:00 2001
From: Bertrik Sikken <bertrik@sikken.nl>
Date: Wed, 11 Nov 2009 21:31:38 +0000
Subject: Meizu M3: configure and use SDRAM

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23614 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/export/config-meizu-m3.h    |  3 +++
 firmware/target/arm/s5l8700/boot.lds |  4 ----
 firmware/target/arm/s5l8700/crt0.S   | 37 +++++++++++++++++++++++++++++-------
 3 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/firmware/export/config-meizu-m3.h b/firmware/export/config-meizu-m3.h
index 12f2cfdfea..06720695eb 100644
--- a/firmware/export/config-meizu-m3.h
+++ b/firmware/export/config-meizu-m3.h
@@ -58,6 +58,9 @@
 
 #define CONFIG_NAND NAND_SAMSUNG
 
+/* The NAND flash has 2048-byte sectors, and is our only storage */
+#define SECTOR_SIZE 2048
+
 /* LCD dimensions */
 #define LCD_WIDTH  176
 #define LCD_HEIGHT 132
diff --git a/firmware/target/arm/s5l8700/boot.lds b/firmware/target/arm/s5l8700/boot.lds
index ba5a4a4cac..9ee7405a9f 100644
--- a/firmware/target/arm/s5l8700/boot.lds
+++ b/firmware/target/arm/s5l8700/boot.lds
@@ -104,9 +104,5 @@ SECTIONS
      *(COMMON);
     . = ALIGN(0x4);
      _end = .;
-#if defined(IPOD_NANO2G) || defined(MEIZU_M6SP)
   } > DRAM
-#else /* other targets don't have DRAM set up yet */
-  } > IRAM
-#endif  
 }
diff --git a/firmware/target/arm/s5l8700/crt0.S b/firmware/target/arm/s5l8700/crt0.S
index 5faaf4e834..67bcc5a796 100644
--- a/firmware/target/arm/s5l8700/crt0.S
+++ b/firmware/target/arm/s5l8700/crt0.S
@@ -22,6 +22,28 @@
 #include "config.h"
 #include "cpu.h"
 
+/* Meizu M3 SDRAM settings */
+#ifdef MEIZU_M3
+#define SDR_DSS_SEL_B   1
+#define SDR_DSS_SEL_O   1
+#define SDR_DSS_SEL_C   1
+#define SDR_TIMING      0x6A491D
+#define SDR_CONFIG      0x900
+#define SDR_MRS         0x37
+#define SDR_EMRS        0x4000
+#endif
+
+/* Meizu M6SP SDRAM settings */
+#ifdef MEIZU_M6SP
+#define SDR_DSS_SEL_B   5
+#define SDR_DSS_SEL_O   2
+#define SDR_DSS_SEL_C   2
+#define SDR_TIMING      0x6A4965
+#define SDR_CONFIG      0x700
+#define SDR_MRS         0x33
+#define SDR_EMRS        0x4033
+#endif
+
     .section .intvect,"ax",%progbits
     .global    start
     .global    _newstart
@@ -236,14 +258,15 @@ start_loc:
     mov r0, #0  // 0x0
     str r0, [r1, #44] // do not enter any power saving mode
 
-#ifdef MEIZU_M6SP
+#if defined(MEIZU_M6SP) || defined(MEIZU_M3)
     /* setup SDRAM for Meizu M6SP */
     ldr r1, =0x38200000
     // configure SDR drive strength and pad settings
-    mov r0, #5
+    mov r0, #SDR_DSS_SEL_B
     str r0, [r1, #0x4C] // MIU_DSS_SEL_B
-    mov r0, #2
+    mov r0, #SDR_DSS_SEL_O
     str r0, [r1, #0x50] // MIU_DSS_SEL_O
+    mov r0, #SDR_DSS_SEL_C
     str r0, [r1, #0x54] // MIU_DSS_SEL_C
     mov r0, #2
     str r0, [r1, #0x60] // SSTL2_PAD_ON
@@ -254,10 +277,10 @@ start_loc:
     orr r0, r0, #1
     str r0, [r1, #0x40] // MIUORG
     // set controller configuration
-    mov r0, #0x700
+    mov r0, #SDR_CONFIG
     str r0, [r1]        // MIUCON
     // set SDRAM timing
-    ldr r0, =0x6A4965
+    ldr r0, =SDR_TIMING
     str r0, [r1, #0x10] // MIUSDPARA
     // set refresh rate
     mov r0, #0x1080
@@ -287,11 +310,11 @@ start_loc:
     nop
     nop
     // set mode register
-    mov r0, #0x33
+    mov r0, #SDR_MRS
     str r0, [r1, #0x0C] // MIUMRS
     ldr r0, =0x103
     str r0, [r1, #0x04] // MIUCOM = mode register set
-    ldr r0, =0x4033
+    ldr r0, =SDR_EMRS
     str r0, [r1, #0x0C] // MIUMRS
     ldr r0, =0x103
     str r0, [r1, #0x04] // MIUCOM = mode register set
-- 
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