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authorNiklaus Giger <niklaus.giger@netstal.com>2008-01-16 18:39:18 +0100
committerStefan Roese <sr@denx.de>2008-01-17 13:51:12 +0100
commitefeff5382b7a91b48a1aa68b2b75f92ad1d33ff8 (patch)
tree2aaba6ce3a7931bd47fb32ef5df7251c9f5f80b3 /board/netstal/hcu5/sdram.c
parent4371090e5da77edc7bf9f296364db4801639d9c4 (diff)
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ppc4xx: Netstal HCU5 board: added various fixes and POST
- Moved some common code to nestal/common/nm_bsp.c. - Added support for the vxWorks EDR. - Enable trace for Lauterbach, if present. - Added support for POST. - Stylistic cleanups (multi-line comments/ enforce 80 colomn width) Signed-off-by: Niklaus Giger <niklaus.giger@netstal.com>
Diffstat (limited to 'board/netstal/hcu5/sdram.c')
-rw-r--r--board/netstal/hcu5/sdram.c73
1 files changed, 33 insertions, 40 deletions
diff --git a/board/netstal/hcu5/sdram.c b/board/netstal/hcu5/sdram.c
index cbb2839..83d9456 100644
--- a/board/netstal/hcu5/sdram.c
+++ b/board/netstal/hcu5/sdram.c
@@ -62,11 +62,8 @@ void dflush(void);
#define DDR0_22_CTRL_RAW_ECC_ENABLE 0x03000000 /* ECC correcting on */
#define DDR0_03_CASLAT_DECODE(n) ((((unsigned long)(n))>>16)&0x7)
-#ifdef CFG_ENABLE_SDRAM_CACHE
-#define MY_TLB_WORD2_I_ENABLE 0 /* enable caching on DDR2 */
-#else
-#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE /* disable caching on DDR2 */
-#endif
+#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE
+ /* disable caching on DDR2 */
void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value);
@@ -157,38 +154,36 @@ static void blank_string(int size)
/*---------------------------------------------------------------------------+
* program_ecc.
*---------------------------------------------------------------------------*/
-static void program_ecc(unsigned long start_address, unsigned long num_bytes,
- unsigned long tlb_word2_i_value)
+static void program_ecc(unsigned long start_address, unsigned long num_bytes)
{
- unsigned long current_address= start_address;
- int loopi = 0;
u32 val;
-
char str[] = "ECC generation -";
- char slash[] = "\\|/-\\|/-";
+#if defined(CONFIG_PRAM)
+ u32 *magic;
+
+ /* Check whether vxWorks is using EDR logging, if yes zero */
+ /* also PostMortem and user reserved memory */
+ magic= in_be32(start_address + num_bytes -
+ (CONFIG_PRAM*1024) + sizeof(u32));
+
+ debug("\n%s: CONFIG_PRAM %d kB magic 0x%x 0x%p -> 0x%x\n", __FUNCTION__,
+ CONFIG_PRAM,
+ start_address + num_bytes - (CONFIG_PRAM*1024) + sizeof(u32),
+ magic, in_be32(magic));
+ if (in_be32(magic) == 0xbeefbabe)
+ num_bytes -= (CONFIG_PRAM*1024) - PM_RESERVED_MEM;
+#endif
+
sync();
eieio();
puts(str);
- if (tlb_word2_i_value == TLB_WORD2_I_ENABLE) {
- /* ECC bit set method for non-cached memory */
- /* This takes various seconds */
- for(current_address = 0; current_address < num_bytes;
- current_address += sizeof(u32)) {
- *(u32 *)current_address = 0;
- if ((current_address % (2 << 20)) == 0) {
- putc('\b');
- putc(slash[loopi++ % 8]);
- }
- }
- } else {
- /* ECC bit set method for cached memory */
- /* Fast method, no noticeable delay */
- dcbz_area(start_address, num_bytes);
- dflush();
- }
+ /* ECC bit set method for cached memory */
+ /* Fast method, no noticeable delay */
+ dcbz_area(start_address, num_bytes);
+ dflush();
blank_string(strlen(str));
/* Clear error status */
@@ -196,7 +191,7 @@ static void program_ecc(unsigned long start_address, unsigned long num_bytes,
mtsdram(DDR0_00, val | DDR0_00_INT_ACK_ALL);
/*
- * Clear possible errors
+ * Clear possible ECC errors
* If not done, then we could get an interrupt later on when
* exceptions are enabled.
*/
@@ -212,6 +207,7 @@ static void program_ecc(unsigned long start_address, unsigned long num_bytes,
#endif
+
/***********************************************************************
*
* initdram -- 440EPx's DDR controller is a DENALI Core
@@ -233,23 +229,22 @@ long int initdram (int board_type)
mtsdram(DDR0_04, 0x0A020200);
mtsdram(DDR0_05, 0x02020307);
switch (*hwVersReg & HCU_HW_SDRAM_CONFIG_MASK) {
- case 0:
- dram_size = 128 * 1024 * 1024 ;
- mtsdram(DDR0_06, 0x0102C80D); /* 128MB RAM */
- mtsdram(DDR0_11, 0x000FC800); /* 128MB RAM */
- mtsdram(DDR0_43, 0x030A0300); /* 128MB RAM */
- break;
case 1:
dram_size = 256 * 1024 * 1024 ;
mtsdram(DDR0_06, 0x0102C812); /* 256MB RAM */
mtsdram(DDR0_11, 0x0014C800); /* 256MB RAM */
mtsdram(DDR0_43, 0x030A0200); /* 256MB RAM */
break;
+ case 0:
default:
- sdram_panic(INVALID_HW_CONFIG);
+ dram_size = 128 * 1024 * 1024 ;
+ mtsdram(DDR0_06, 0x0102C80D); /* 128MB RAM */
+ mtsdram(DDR0_11, 0x000FC800); /* 128MB RAM */
+ mtsdram(DDR0_43, 0x030A0300); /* 128MB RAM */
break;
}
mtsdram(DDR0_07, 0x00090100);
+
/*
* TCPD=200 cycles of clock input is required to lock the DLL.
* CKE must be HIGH the entire time.mtsdram(DDR0_08, 0x02C80001);
@@ -288,7 +283,7 @@ long int initdram (int board_type)
* Program tlb entries for this size (dynamic)
*/
remove_tlb(CFG_SDRAM_BASE, 256 << 20);
- program_tlb(0, 0, dram_size, MY_TLB_WORD2_I_ENABLE);
+ program_tlb(0, 0, dram_size, TLB_WORD2_W_ENABLE | TLB_WORD2_I_ENABLE);
/*
* Setup 2nd TLB with same physical address but different virtual
@@ -296,13 +291,11 @@ long int initdram (int board_type)
*/
program_tlb(0, CFG_DDR_CACHED_ADDR, dram_size, 0);
- /* Diminish RAM to initialize */
- dram_size = dram_size - 32 ;
#ifdef CONFIG_DDR_ECC
/*
* If ECC is enabled, initialize the parity bits.
*/
- program_ecc(CFG_DDR_CACHED_ADDR, dram_size, 0);
+ program_ecc(CFG_DDR_CACHED_ADDR, dram_size);
#endif
return (dram_size);