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Diffstat (limited to 'cpu/ppc4xx/sdram.c')
-rw-r--r--cpu/ppc4xx/sdram.c200
1 files changed, 100 insertions, 100 deletions
diff --git a/cpu/ppc4xx/sdram.c b/cpu/ppc4xx/sdram.c
index c5ab01738..e31d59d80 100644
--- a/cpu/ppc4xx/sdram.c
+++ b/cpu/ppc4xx/sdram.c
@@ -18,7 +18,7 @@
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
@@ -38,17 +38,17 @@
#ifndef CFG_SDRAM_TABLE
sdram_conf_t mb0cf[] = {
- {(128 << 20), 13, 0x000A4001}, /* (0-128MB) Address Mode 3, 13x10(4) */
- {(64 << 20), 13, 0x00084001}, /* (0-64MB) Address Mode 3, 13x9(4) */
- {(32 << 20), 12, 0x00062001}, /* (0-32MB) Address Mode 2, 12x9(4) */
- {(16 << 20), 12, 0x00046001}, /* (0-16MB) Address Mode 4, 12x8(4) */
- {(4 << 20), 11, 0x00008001}, /* (0-4MB) Address Mode 5, 11x8(2) */
+ {(128 << 20), 13, 0x000A4001}, /* (0-128MB) Address Mode 3, 13x10(4) */
+ {(64 << 20), 13, 0x00084001}, /* (0-64MB) Address Mode 3, 13x9(4) */
+ {(32 << 20), 12, 0x00062001}, /* (0-32MB) Address Mode 2, 12x9(4) */
+ {(16 << 20), 12, 0x00046001}, /* (0-16MB) Address Mode 4, 12x8(4) */
+ {(4 << 20), 11, 0x00008001}, /* (0-4MB) Address Mode 5, 11x8(2) */
};
#else
sdram_conf_t mb0cf[] = CFG_SDRAM_TABLE;
#endif
-#define N_MB0CF (sizeof(mb0cf) / sizeof(mb0cf[0]))
+#define N_MB0CF (sizeof(mb0cf) / sizeof(mb0cf[0]))
#ifndef CONFIG_440
@@ -65,76 +65,76 @@ static ulong ns2clks(ulong ns)
static ulong compute_sdtr1(ulong speed)
{
#ifdef CFG_SDRAM_CASL
- ulong tmp;
- ulong sdtr1 = 0;
+ ulong tmp;
+ ulong sdtr1 = 0;
- /* CASL */
- if (CFG_SDRAM_CASL < 2)
- sdtr1 |= (1 << SDRAM0_TR_CASL);
- else
- if (CFG_SDRAM_CASL > 4)
- sdtr1 |= (3 << SDRAM0_TR_CASL);
- else
- sdtr1 |= ((CFG_SDRAM_CASL-1) << SDRAM0_TR_CASL);
+ /* CASL */
+ if (CFG_SDRAM_CASL < 2)
+ sdtr1 |= (1 << SDRAM0_TR_CASL);
+ else
+ if (CFG_SDRAM_CASL > 4)
+ sdtr1 |= (3 << SDRAM0_TR_CASL);
+ else
+ sdtr1 |= ((CFG_SDRAM_CASL-1) << SDRAM0_TR_CASL);
- /* PTA */
- tmp = ns2clks(CFG_SDRAM_PTA);
- if ((tmp >= 2) && (tmp <= 4))
- sdtr1 |= ((tmp-1) << SDRAM0_TR_PTA);
- else
- sdtr1 |= ((4-1) << SDRAM0_TR_PTA);
+ /* PTA */
+ tmp = ns2clks(CFG_SDRAM_PTA);
+ if ((tmp >= 2) && (tmp <= 4))
+ sdtr1 |= ((tmp-1) << SDRAM0_TR_PTA);
+ else
+ sdtr1 |= ((4-1) << SDRAM0_TR_PTA);
- /* CTP */
- tmp = ns2clks(CFG_SDRAM_CTP);
- if ((tmp >= 2) && (tmp <= 4))
- sdtr1 |= ((tmp-1) << SDRAM0_TR_CTP);
- else
- sdtr1 |= ((4-1) << SDRAM0_TR_CTP);
+ /* CTP */
+ tmp = ns2clks(CFG_SDRAM_CTP);
+ if ((tmp >= 2) && (tmp <= 4))
+ sdtr1 |= ((tmp-1) << SDRAM0_TR_CTP);
+ else
+ sdtr1 |= ((4-1) << SDRAM0_TR_CTP);
- /* LDF */
- tmp = ns2clks(CFG_SDRAM_LDF);
- if ((tmp >= 2) && (tmp <= 4))
- sdtr1 |= ((tmp-1) << SDRAM0_TR_LDF);
- else
- sdtr1 |= ((2-1) << SDRAM0_TR_LDF);
+ /* LDF */
+ tmp = ns2clks(CFG_SDRAM_LDF);
+ if ((tmp >= 2) && (tmp <= 4))
+ sdtr1 |= ((tmp-1) << SDRAM0_TR_LDF);
+ else
+ sdtr1 |= ((2-1) << SDRAM0_TR_LDF);
- /* RFTA */
- tmp = ns2clks(CFG_SDRAM_RFTA);
- if ((tmp >= 4) && (tmp <= 10))
- sdtr1 |= ((tmp-4) << SDRAM0_TR_RFTA);
- else
- sdtr1 |= ((10-4) << SDRAM0_TR_RFTA);
+ /* RFTA */
+ tmp = ns2clks(CFG_SDRAM_RFTA);
+ if ((tmp >= 4) && (tmp <= 10))
+ sdtr1 |= ((tmp-4) << SDRAM0_TR_RFTA);
+ else
+ sdtr1 |= ((10-4) << SDRAM0_TR_RFTA);
- /* RCD */
- tmp = ns2clks(CFG_SDRAM_RCD);
- if ((tmp >= 2) && (tmp <= 4))
- sdtr1 |= ((tmp-1) << SDRAM0_TR_RCD);
- else
- sdtr1 |= ((4-1) << SDRAM0_TR_RCD);
+ /* RCD */
+ tmp = ns2clks(CFG_SDRAM_RCD);
+ if ((tmp >= 2) && (tmp <= 4))
+ sdtr1 |= ((tmp-1) << SDRAM0_TR_RCD);
+ else
+ sdtr1 |= ((4-1) << SDRAM0_TR_RCD);
- return sdtr1;
+ return sdtr1;
#else /* CFG_SDRAM_CASL */
- /*
- * If no values are configured in the board config file
- * use the default values, which seem to be ok for most
- * boards.
- *
- * REMARK:
- * For new board ports we strongly recommend to define the
- * correct values for the used SDRAM chips in your board
- * config file (see PPChameleonEVB.h)
- */
- if (speed > 100000000) {
- /*
- * 133 MHz SDRAM
- */
- return 0x01074015;
- } else {
- /*
- * default: 100 MHz SDRAM
- */
- return 0x0086400d;
- }
+ /*
+ * If no values are configured in the board config file
+ * use the default values, which seem to be ok for most
+ * boards.
+ *
+ * REMARK:
+ * For new board ports we strongly recommend to define the
+ * correct values for the used SDRAM chips in your board
+ * config file (see PPChameleonEVB.h)
+ */
+ if (speed > 100000000) {
+ /*
+ * 133 MHz SDRAM
+ */
+ return 0x01074015;
+ } else {
+ /*
+ * default: 100 MHz SDRAM
+ */
+ return 0x0086400d;
+ }
#endif /* CFG_SDRAM_CASL */
}
@@ -142,24 +142,24 @@ static ulong compute_sdtr1(ulong speed)
static ulong compute_rtr(ulong speed, ulong rows, ulong refresh)
{
#ifdef CFG_SDRAM_CASL
- ulong tmp;
+ ulong tmp;
- tmp = ((refresh*1000*1000) / (1 << rows)) * (speed / 1000);
- tmp /= 1000000;
+ tmp = ((refresh*1000*1000) / (1 << rows)) * (speed / 1000);
+ tmp /= 1000000;
- return ((tmp & 0x00003FF8) << 16);
+ return ((tmp & 0x00003FF8) << 16);
#else /* CFG_SDRAM_CASL */
- if (speed > 100000000) {
- /*
- * 133 MHz SDRAM
- */
+ if (speed > 100000000) {
+ /*
+ * 133 MHz SDRAM
+ */
return 0x07f00000;
- } else {
- /*
- * default: 100 MHz SDRAM
- */
+ } else {
+ /*
+ * default: 100 MHz SDRAM
+ */
return 0x05f00000;
- }
+ }
#endif /* CFG_SDRAM_CASL */
}
@@ -172,19 +172,19 @@ void sdram_init(void)
ulong sdtr1;
int i;
- /*
- * Determine SDRAM speed
- */
- speed = get_bus_freq(0); /* parameter not used on ppc4xx */
+ /*
+ * Determine SDRAM speed
+ */
+ speed = get_bus_freq(0); /* parameter not used on ppc4xx */
- /*
- * sdtr1 (register SDRAM0_TR) must take into account timings listed
- * in SDRAM chip datasheet. rtr (register SDRAM0_RTR) must take into
- * account actual SDRAM size. So we can set up sdtr1 according to what
- * is specified in board configuration file while rtr dependds on SDRAM
- * size we are assuming before detection.
- */
- sdtr1 = compute_sdtr1(speed);
+ /*
+ * sdtr1 (register SDRAM0_TR) must take into account timings listed
+ * in SDRAM chip datasheet. rtr (register SDRAM0_RTR) must take into
+ * account actual SDRAM size. So we can set up sdtr1 according to what
+ * is specified in board configuration file while rtr dependds on SDRAM
+ * size we are assuming before detection.
+ */
+ sdtr1 = compute_sdtr1(speed);
for (i=0; i<N_MB0CF; i++) {
/*
@@ -343,8 +343,8 @@ static void ecc_init(ulong start, ulong size)
* Autodetect onboard DDR SDRAM on 440 platforms
*
* NOTE: Some of the hardcoded values are hardware dependant,
- * so this should be extended for other future boards
- * using this routine!
+ * so this should be extended for other future boards
+ * using this routine!
*/
long int initdram(int board_type)
{
@@ -360,11 +360,11 @@ long int initdram(int board_type)
/*
* Setup some default
*/
- mtsdram(mem_uabba, 0x00000000); /* ubba=0 (default) */
- mtsdram(mem_slio, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
+ mtsdram(mem_uabba, 0x00000000); /* ubba=0 (default) */
+ mtsdram(mem_slio, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
mtsdram(mem_devopt, 0x00000000); /* dll=0 ds=0 (normal) */
mtsdram(mem_wddctr, 0x00000000); /* wrcp=0 dcd=0 */
- mtsdram(mem_clktr, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0 */
+ mtsdram(mem_clktr, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0 */
/*
* Following for CAS Latency = 2.5 @ 133 MHz PLB
@@ -379,7 +379,7 @@ long int initdram(int board_type)
/*
* Enable the controller, then wait for DCEN to complete
*/
- mtsdram(mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
+ mtsdram(mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
udelay(10000);
if (get_ram_size(0, mb0cf[i].size) == mb0cf[i].size) {
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 11:59:25 +0000