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-rw-r--r--board/mpc8260ads/mpc8260ads.c262
1 files changed, 205 insertions, 57 deletions
diff --git a/board/mpc8260ads/mpc8260ads.c b/board/mpc8260ads/mpc8260ads.c
index 1d920fe..2200a24 100644
--- a/board/mpc8260ads/mpc8260ads.c
+++ b/board/mpc8260ads/mpc8260ads.c
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2001
+ * (C) Copyright 2001-2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Modified during 2001 by
@@ -31,6 +31,8 @@
#include <common.h>
#include <ioports.h>
#include <mpc8260.h>
+#include <i2c.h>
+#include <spd.h>
/*
* I/O Port configuration table
@@ -167,8 +169,8 @@ const iop_conf_t iop_conf_tab[4][32] = {
/* PD18 */ { 0, 0, 0, 1, 0, 0 }, /* PD18 */
/* PD17 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXPRTY */
/* PD16 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXPRTY */
- /* PD15 */ { 0, 1, 1, 0, 1, 0 }, /* I2C SDA */
- /* PD14 */ { 1, 0, 0, 1, 0, 0 }, /* LED */
+ /* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
+ /* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
/* PD13 */ { 0, 0, 0, 0, 0, 0 }, /* PD13 */
/* PD12 */ { 0, 0, 0, 0, 0, 0 }, /* PD12 */
/* PD11 */ { 0, 0, 0, 0, 0, 0 }, /* PD11 */
@@ -197,76 +199,222 @@ typedef struct bscr_ {
unsigned long bcsr7;
} bcsr_t;
-void reset_phy(void)
+void reset_phy (void)
{
- volatile bcsr_t *bcsr = (bcsr_t *)CFG_BCSR;
+ volatile bcsr_t *bcsr = (bcsr_t *) CFG_BCSR;
- /* reset the FEC port */
- bcsr->bcsr1 &= ~FETH_RST;
- bcsr->bcsr1 |= FETH_RST;
+ /* reset the FEC port */
+ bcsr->bcsr1 &= ~FETH_RST;
+ bcsr->bcsr1 |= FETH_RST;
}
int board_pre_init (void)
{
- volatile bcsr_t *bcsr = (bcsr_t *)CFG_BCSR;
- bcsr->bcsr1 = ~FETHIEN & ~RS232EN_1;
+ volatile bcsr_t *bcsr = (bcsr_t *) CFG_BCSR;
- return 0;
+ bcsr->bcsr1 = ~FETHIEN & ~RS232EN_1;
+
+ return 0;
}
-long int initdram(int board_type)
+#define ns2clk(ns) (ns / (1000000000 / CONFIG_8260_CLKIN) + 1)
+
+long int initdram (int board_type)
{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
- volatile memctl8260_t *memctl = &immap->im_memctl;
- volatile uchar *ramaddr,
- c = 0xff;
- int i;
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile memctl8260_t *memctl = &immap->im_memctl;
+ volatile uchar *ramaddr, c = 0xff;
+
+ /* Initialisation is for 16MB DIMM the board is shipped with */
+ long int msize = 16;
+ uint or = 0xFF000CA0;
+ uint psdmr = CFG_PSDMR;
+ uint psrt = CFG_PSRT;
+
+ int i;
#ifndef CFG_RAMBOOT
- immap->im_siu_conf.sc_ppc_acr = 0x00000002;
- immap->im_siu_conf.sc_ppc_alrh = 0x01267893;
- immap->im_siu_conf.sc_tescr1 = 0x00004000;
-
- /* init local sdram, bank 4 */
- memctl->memc_lsrt = 0x00000010;
- memctl->memc_or4 = 0xFFC01480;
- memctl->memc_br4 = 0x04001861;
- memctl->memc_lsdmr = 0x2886A522;
- ramaddr = (uchar *)CFG_LSDRAM_BASE;
- *ramaddr = c;
- memctl->memc_lsdmr = 0x0886A522;
- for( i = 0; i < 8; i++ ) {
- *ramaddr = c;
- }
- memctl->memc_lsdmr = 0x1886A522;
- *ramaddr = c;
- memctl->memc_lsdmr = 0x4086A522;
-
- /* init sdram dimm */
- ramaddr = (uchar *)CFG_SDRAM_BASE;
- memctl->memc_psrt = 0x00000010;
- immap->im_memctl.memc_or2 = 0xFF000CA0;
- immap->im_memctl.memc_br2 = 0x00000041;
- memctl->memc_psdmr = 0x296EB452;
- *ramaddr = c;
- memctl->memc_psdmr = 0x096EB452;
- for (i = 0; i < 8; i++)
- *ramaddr = c;
-
- memctl->memc_psdmr = 0x196EB452;
- *ramaddr = c;
- memctl->memc_psdmr = 0x416EB452;
- *ramaddr = c;
+ immap->im_siu_conf.sc_ppc_acr = 0x00000002;
+ immap->im_siu_conf.sc_ppc_alrh = 0x01267893;
+ immap->im_siu_conf.sc_tescr1 = 0x00004000;
+
+ memctl->memc_mptpr = CFG_MPTPR;
+ /* init local sdram, bank 4 */
+ memctl->memc_lsrt = 0x00000010;
+ memctl->memc_or4 = 0xFFC01480;
+ memctl->memc_br4 = 0x04001861;
+ memctl->memc_lsdmr = 0x2886A522;
+ ramaddr = (uchar *) CFG_LSDRAM_BASE;
+ *ramaddr = c;
+ memctl->memc_lsdmr = 0x0886A522;
+ for (i = 0; i < 8; i++) {
+ *ramaddr = c;
+ }
+ memctl->memc_lsdmr = 0x1886A522;
+ *ramaddr = c;
+ memctl->memc_lsdmr = 0x4086A522;
+
+ /* init sdram dimm */
+#ifdef CONFIG_SPD_EEPROM
+ {
+ spd_eeprom_t spd;
+ uint pbi, bsel, rowst, lsb, tmp;
+
+ i2c_read (CONFIG_SPD_ADDR, 0, 1, (uchar *) & spd, sizeof (spd));
+
+ /* Bank-based interleaving is not supported for physical bank
+ sizes greater than 128MB which is encoded as 0x20 in SPD
+ */
+ pbi = (spd.row_dens > 32) ? 1 : CONFIG_SDRAM_PBI;
+ msize = spd.nrows * (4 * spd.row_dens); /* Mixed size not supported */
+ or = ~(msize - 1) << 20; /* SDAM */
+ switch (spd.nbanks) { /* BPD */
+ case 2:
+ bsel = 1;
+ break;
+ case 4:
+ bsel = 2;
+ or |= 0x00002000;
+ break;
+ case 8:
+ bsel = 3;
+ or |= 0x00004000;
+ break;
+ }
+ lsb = 3; /* For 64-bit port, lsb is 3 bits */
+
+ if (pbi) { /* Bus partition depends on interleaving */
+ rowst = 32 - (spd.nrow_addr + spd.ncol_addr + bsel + lsb);
+ or |= (rowst << 9); /* ROWST */
+ } else {
+ rowst = 32 - (spd.nrow_addr + spd.ncol_addr + lsb);
+ or |= ((rowst * 2 - 12) << 9); /* ROWST */
+ }
+ or |= ((spd.nrow_addr - 9) << 6); /* NUMR */
+
+ psdmr = (pbi << 31); /* PBI */
+ /* Bus multiplexing parameters */
+ tmp = 32 - (lsb + spd.nrow_addr); /* Tables 10-19 and 10-20 */
+ psdmr |= ((tmp - (rowst - 5) - 13) << 24); /* SDAM */
+ psdmr |= ((tmp - 3 - 12) << 21); /* BSMA */
+
+ tmp = (31 - lsb - 10) - tmp;
+ /* Pin connected to SDA10 is (31 - lsb - 10).
+ rowst is multiplexed over (32 - (lsb + spd.nrow_addr)),
+ so (rowst + tmp) alternates with AP.
+ */
+ if (pbi) /* Table 10-7 */
+ psdmr |= ((10 - (rowst + tmp)) << 18); /* SDA10 */
+ else
+ psdmr |= ((12 - (rowst + tmp)) << 18); /* SDA10 */
+
+ /* SDRAM device-specific parameters */
+ tmp = ns2clk (70); /* Refresh recovery is not in SPD, so assume 70ns */
+ switch (tmp) { /* RFRC */
+ case 1:
+ case 2:
+ psdmr |= (1 << 15);
+ break;
+ case 3:
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ psdmr |= ((tmp - 2) << 15);
+ break;
+ default:
+ psdmr |= (7 << 15);
+ }
+ psdmr |= (ns2clk (spd.trp) % 8 << 12); /* PRETOACT */
+ psdmr |= (ns2clk (spd.trcd) % 8 << 9); /* ACTTORW */
+ /* BL=0 because for 64-bit SDRAM burst length must be 4 */
+ /* LDOTOPRE ??? */
+ for (i = 0, tmp = spd.write_lat; (i < 4) && ((tmp & 1) == 0); i++)
+ tmp >>= 1;
+ switch (i) { /* WRC */
+ case 0:
+ case 1:
+ psdmr |= (1 << 4);
+ break;
+ case 2:
+ case 3:
+ psdmr |= (i << 4);
+ break;
+ }
+ /* EAMUX=0 - no external address multiplexing */
+ /* BUFCMD=0 - no external buffers */
+ for (i = 1, tmp = spd.cas_lat; (i < 3) && ((tmp & 1) == 0); i++)
+ tmp >>= 1;
+ psdmr |= i; /* CL */
+
+ switch (spd.refresh & 0x7F) {
+ case 1:
+ tmp = 3900;
+ break;
+ case 2:
+ tmp = 7800;
+ break;
+ case 3:
+ tmp = 31300;
+ break;
+ case 4:
+ tmp = 62500;
+ break;
+ case 5:
+ tmp = 125000;
+ break;
+ default:
+ tmp = 15625;
+ }
+ psrt = tmp / (1000000000 / CONFIG_8260_CLKIN *
+ ((memctl->memc_mptpr >> 8) + 1)) - 1;
+#ifdef SPD_DEBUG
+ printf ("\nDIMM type: %-18.18s\n", spd.mpart);
+ printf ("SPD size: %d\n", spd.info_size);
+ printf ("EEPROM size: %d\n", 1 << spd.chip_size);
+ printf ("Memory type: %d\n", spd.mem_type);
+ printf ("Row addr: %d\n", spd.nrow_addr);
+ printf ("Column addr: %d\n", spd.ncol_addr);
+ printf ("# of rows: %d\n", spd.nrows);
+ printf ("Row density: %d\n", spd.row_dens);
+ printf ("# of banks: %d\n", spd.nbanks);
+ printf ("Data width: %d\n",
+ 256 * spd.dataw_msb + spd.dataw_lsb);
+ printf ("Chip width: %d\n", spd.primw);
+ printf ("Refresh rate: %02X\n", spd.refresh);
+ printf ("CAS latencies: %02X\n", spd.cas_lat);
+ printf ("Write latencies: %02X\n", spd.write_lat);
+ printf ("tRP: %d\n", spd.trp);
+ printf ("tRCD: %d\n", spd.trcd);
+
+ printf ("OR=%X, PSDMR=%08X, PSRT=%0X\n", or, psdmr, psrt);
+#endif /* SPD_DEBUG */
+ }
+#endif /* CONFIG_SPD_EEPROM */
+ memctl->memc_psrt = psrt;
+ memctl->memc_or2 = or;
+ memctl->memc_br2 = CFG_SDRAM_BASE | 0x00000041;
+ ramaddr = (uchar *) CFG_SDRAM_BASE;
+ memctl->memc_psdmr = psdmr | 0x28000000; /* Precharge all banks */
+ *ramaddr = c;
+ memctl->memc_psdmr = psdmr | 0x08000000; /* CBR refresh */
+ for (i = 0; i < 8; i++)
+ *ramaddr = c;
+
+ memctl->memc_psdmr = psdmr | 0x18000000; /* Mode Register write */
+ *ramaddr = c;
+ memctl->memc_psdmr = psdmr | 0x40000000; /* Refresh enable */
+ *ramaddr = c;
#endif
- /* return total ram size of simm */
- return (16 * 1024 * 1024);
+ /* return total ram size of DIMM */
+ return (msize * 1024 * 1024);
}
-int checkboard(void)
+int checkboard (void)
{
- puts ("Board: Motorola MPC8260ADS\n");
- return 0;
+ puts ("Board: Motorola MPC8260ADS\n");
+ return 0;
}
-
generated by cgit v1.1 at 2024-11-30 23:56:11 +0000