#include <asm/processor.h>
#include <asm/io.h>
#include <asm/mmu.h>
+#include <asm/cache.h>
#include <ppc440.h>
void hcu_led_set(u32 value);
void dcbz_area(u32 start_address, u32 num_bytes);
-void dflush(void);
-
-#define DDR_DCR_BASE 0x10
-#define ddrcfga (DDR_DCR_BASE+0x0) /* DDR configuration address reg */
-#define ddrcfgd (DDR_DCR_BASE+0x1) /* DDR configuration data reg */
-
-#define DDR0_01_INT_MASK_MASK 0x000000FF
-#define DDR0_00_INT_ACK_ALL 0x7F000000
-#define DDR0_01_INT_MASK_ALL_ON 0x000000FF
-#define DDR0_01_INT_MASK_ALL_OFF 0x00000000
-
-#define DDR0_17_DLLLOCKREG_MASK 0x00010000 /* Read only */
-#define DDR0_17_DLLLOCKREG_UNLOCKED 0x00000000
-#define DDR0_17_DLLLOCKREG_LOCKED 0x00010000
-
-#define DDR0_22 0x16
-/* ECC */
-#define DDR0_22_CTRL_RAW_MASK 0x03000000
-#define DDR0_22_CTRL_RAW_ECC_DISABLE 0x00000000 /* ECC not enabled */
-#define DDR0_22_CTRL_RAW_ECC_CHECK_ONLY 0x01000000 /* ECC no correction */
-#define DDR0_22_CTRL_RAW_NO_ECC_RAM 0x02000000 /* Not a ECC RAM*/
-#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
-void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value);
+#define ECC_RAM 0x03267F0B
+#define NO_ECC_RAM 0x00267F0B
+
+#define HCU_HW_SDRAM_CONFIG_MASK 0x7
+
+#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE
+ /* disable caching on DDR2 */
void board_add_ram_info(int use_default)
{
PPC4xx_SYS_INFO board_cfg;
u32 val;
+
mfsdram(DDR0_22, val);
val &= DDR0_22_CTRL_RAW_MASK;
switch (val) {
/* -----------------------------------------------------------+
* Wait for the DCC master delay line to finish calibration
* ----------------------------------------------------------*/
- mtdcr(ddrcfga, DDR0_17);
+ mtdcr(memcfga, DDR0_17);
val = DDR0_17_DLLLOCKREG_UNLOCKED;
while (wait != 0xffff) {
- val = mfdcr(ddrcfgd);
+ val = mfdcr(memcfgd);
if ((val & DDR0_17_DLLLOCKREG_MASK) ==
DDR0_17_DLLLOCKREG_LOCKED)
/* dlllockreg bit on */
/*---------------------------------------------------------------------------+
* 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 *magicPtr;
+ u32 magic;
+
+ if ((mfspr(dbcr0) & 0x80000000) == 0) {
+ /* only if no external debugger is alive!
+ * Check whether vxWorks is using EDR logging, if yes zero
+ * also PostMortem and user reserved memory
+ */
+ magicPtr = (u32 *)(start_address + num_bytes -
+ (CONFIG_PRAM*1024) + sizeof(u32));
+ magic = in_be32(magicPtr);
+ debug("%s: CONFIG_PRAM %d kB magic 0x%x 0x%p\n",
+ __FUNCTION__, CONFIG_PRAM,
+ magicPtr, magic);
+ if (magic == 0xbeefbabe) {
+ printf("%s: preserving at %p\n", __FUNCTION__, magicPtr);
+ 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);
+ /* Write modified dcache lines back to memory */
+ clean_dcache_range(start_address, start_address + num_bytes);
blank_string(strlen(str));
/* Clear error status */
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.
*/
return;
}
-
#endif
+
/***********************************************************************
*
* initdram -- 440EPx's DDR controller is a DENALI Core
************************************************************************/
long int initdram (int board_type)
{
-#define HCU_HW_SDRAM_CONFIG_MASK 0x7
-#define INVALID_HW_CONFIG "Invalid HW-Config"
- u16 *hwVersReg = (u16 *) HCU_HW_VERSION_REGISTER;
unsigned int dram_size = 0;
mtsdram(DDR0_02, 0x00000000);
mtsdram(DDR0_03, 0x02030602);
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;
+ switch (in_be16((u16 *)HCU_HW_VERSION_REGISTER) & HCU_HW_SDRAM_CONFIG_MASK) {
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);
mtsdram(DDR0_19, 0x1D1D1D1D);
mtsdram(DDR0_20, 0x0B0B0B0B);
mtsdram(DDR0_21, 0x0B0B0B0B);
- #define ECC_RAM 0x03267F0B
- #define NO_ECC_RAM 0x00267F0B
#ifdef CONFIG_DDR_ECC
mtsdram(DDR0_22, ECC_RAM);
#else
* 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
*/
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);
projects / platform / kernel / u-boot.git / blobdiff