Add a common get_ram_size() function and modify the the
board-specific files to invoke that common implementation.
diff --git a/board/RPXlite/RPXlite.c b/board/RPXlite/RPXlite.c
index a33357b..d2c2116 100644
--- a/board/RPXlite/RPXlite.c
+++ b/board/RPXlite/RPXlite.c
@@ -40,20 +40,19 @@
#define _NOT_USED_ 0xFFFFCC25
-const uint sdram_table[] =
-{
+const uint sdram_table[] = {
/*
* Single Read. (Offset 00h in UPMA RAM)
*/
0xCFFFCC24, 0x0FFFCC04, 0X0CAFCC04, 0X03AFCC08,
- 0x3FBFCC27, /* last */
+ 0x3FBFCC27, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Read. (Offset 08h in UPMA RAM)
*/
0xCFFFCC24, 0x0FFFCC04, 0x0CAFCC84, 0x03AFCC88,
- 0x3FBFCC27, /* last */
+ 0x3FBFCC27, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_,
@@ -62,14 +61,14 @@
* Single Write. (Offset 18h in UPMA RAM)
*/
0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC04, 0x03FFCC00,
- 0x3FFFCC27, /* last */
+ 0x3FFFCC27, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Write. (Offset 20h in UPMA RAM)
*/
0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC80, 0x03FFCC8C,
- 0x0CFFCC00, 0x33FFCC27, /* last */
+ 0x0CFFCC00, 0x33FFCC27, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_,
@@ -78,7 +77,7 @@
* Refresh. (Offset 30h in UPMA RAM)
*/
0xC0FFCC24, 0x03FFCC24, 0x0FFFCC24, 0x0FFFCC24,
- 0x3FFFCC27, /* last */
+ 0x3FFFCC27, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_,
@@ -97,49 +96,51 @@
int checkboard (void)
{
- puts ("Board: RPXlite\n") ;
- return (0) ;
+ puts ("Board: RPXlite\n");
+ return (0);
}
/* ------------------------------------------------------------------------- */
long int initdram (int board_type)
{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
- volatile memctl8xx_t *memctl = &immap->im_memctl;
- long int size10 ;
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ long int size10;
- upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+ upmconfig (UPMA, (uint *) sdram_table,
+ sizeof (sdram_table) / sizeof (uint));
/* Refresh clock prescalar */
- memctl->memc_mptpr = CFG_MPTPR ;
+ memctl->memc_mptpr = CFG_MPTPR;
- memctl->memc_mar = 0x00000000;
+ memctl->memc_mar = 0x00000000;
/* Map controller banks 1 to the SDRAM bank */
- memctl->memc_or1 = CFG_OR1_PRELIM;
- memctl->memc_br1 = CFG_BR1_PRELIM;
+ memctl->memc_or1 = CFG_OR1_PRELIM;
+ memctl->memc_br1 = CFG_BR1_PRELIM;
- memctl->memc_mamr = CFG_MAMR_10COL & (~(MAMR_PTAE)); /* no refresh yet */
+ memctl->memc_mamr = CFG_MAMR_10COL & (~(MAMR_PTAE)); /* no refresh yet */
- udelay(200);
+ udelay (200);
- /* perform SDRAM initializsation sequence */
+ /* perform SDRAM initializsation sequence */
- memctl->memc_mcr = 0x80002230 ; /* SDRAM bank 0 - refresh twice */
- udelay(1);
+ memctl->memc_mcr = 0x80002230; /* SDRAM bank 0 - refresh twice */
+ udelay (1);
- memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
+ memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
- udelay (1000);
+ udelay (1000);
/* Check Bank 0 Memory Size
* try 10 column mode
*/
- size10 = dram_size (CFG_MAMR_10COL, (ulong *)SDRAM_BASE_PRELIM, SDRAM_MAX_SIZE) ;
+ size10 = dram_size (CFG_MAMR_10COL, (ulong *) SDRAM_BASE_PRELIM,
+ SDRAM_MAX_SIZE);
- return (size10);
+ return (size10);
}
/* ------------------------------------------------------------------------- */
@@ -152,44 +153,13 @@
* - short between data lines
*/
-static long int dram_size (long int mamr_value, long int *base, long int maxsize)
+static long int dram_size (long int mamr_value, long int *base,
+ long int maxsize)
{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
- volatile memctl8xx_t *memctl = &immap->im_memctl;
- volatile long int *addr;
- ulong cnt, val;
- ulong save[32]; /* to make test non-destructive */
- unsigned char i = 0;
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
- memctl->memc_mamr = mamr_value;
+ memctl->memc_mamr = mamr_value;
- for (cnt = maxsize/sizeof(long); cnt > 0; cnt >>= 1) {
- addr = base + cnt; /* pointer arith! */
-
- save[i++] = *addr;
- *addr = ~cnt;
- }
-
- /* write 0 to base address */
- addr = base;
- save[i] = *addr;
- *addr = 0;
-
- /* check at base address */
- if ((val = *addr) != 0) {
- *addr = save[i];
- return (0);
- }
-
- for (cnt = 1; cnt <= maxsize/sizeof(long); cnt <<= 1) {
- addr = base + cnt; /* pointer arith! */
-
- val = *addr;
- *addr = save[--i];
-
- if (val != (~cnt)) {
- return (cnt * sizeof(long));
- }
- }
- return (maxsize);
+ return (get_ram_size (base, maxsize));
}