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-rw-r--r--board/mpl/mip405/init.S50
-rw-r--r--board/mpl/mip405/mip405.c209
-rw-r--r--board/mpl/mip405/u-boot.lds4
3 files changed, 185 insertions, 78 deletions
diff --git a/board/mpl/mip405/init.S b/board/mpl/mip405/init.S
index f0a500a..ad3f78d 100644
--- a/board/mpl/mip405/init.S
+++ b/board/mpl/mip405/init.S
@@ -50,9 +50,13 @@
#include "mip405.h"
- .globl ext_bus_cntlr_init
+ .globl ext_bus_cntlr_init
ext_bus_cntlr_init:
- mflr r4 /* save link register */
+ mflr r4 /* save link register */
+ mfdcr r3,strap /* get strapping reg */
+ andi. r0, r3, PSR_ROM_LOC /* mask out irrelevant bits */
+ bnelr /* jump back if PCI boot */
+
bl ..getAddr
..getAddr:
mflr r3 /* get address of ..getAddr */
@@ -200,3 +204,45 @@ sdram_init:
blr
+
+#if defined(CONFIG_BOOT_PCI)
+ .section .bootpg,"ax"
+ .globl _start_pci
+/*******************************************
+ */
+
+_start_pci:
+ /* first handle errata #68 / PCI_18 */
+ iccci r0, r0 /* invalidate I-cache */
+ lis r31, 0
+ mticcr r31 /* ICCR = 0 (all uncachable) */
+ isync
+
+ mfccr0 r28 /* set CCR0[24] = 1 */
+ ori r28, r28, 0x0080
+ mtccr0 r28
+
+ /* setup PMM0MA (0xEF400004) and PMM0PCIHA (0xEF40000C) */
+ lis r28, 0xEF40
+ addi r28, r28, 0x0004
+ stw r31, 0x0C(r28) /* clear PMM0PCIHA */
+ lis r29, 0xFFF8 /* open 512 kByte */
+ addi r29, r29, 0x0001/* and enable this region */
+ stwbrx r29, r0, r28 /* write PMM0MA */
+
+ lis r28, 0xEEC0 /* address of PCIC0_CFGADDR */
+ addi r29, r28, 4 /* add 4 to r29 -> PCIC0_CFGDATA */
+
+ lis r31, 0x8000 /* set en bit bus 0 */
+ ori r31, r31, 0x304C/* device 6 func 0 reg 4C (XBCS register) */
+ stwbrx r31, r0, r28 /* write it */
+
+ lwbrx r31, r0, r29 /* load XBCS register */
+ oris r31, r31, 0x02C4/* clear BIOSCS WPE, set lower, extended and 1M extended BIOS enable */
+ stwbrx r31, r0, r29 /* write back XBCS register */
+
+ nop
+ nop
+ b _start /* normal start */
+#endif
+
diff --git a/board/mpl/mip405/mip405.c b/board/mpl/mip405/mip405.c
index 96e4df5..93d8679 100644
--- a/board/mpl/mip405/mip405.c
+++ b/board/mpl/mip405/mip405.c
@@ -73,7 +73,7 @@ extern block_dev_desc_t * scsi_get_dev(int dev);
extern block_dev_desc_t * ide_get_dev(int dev);
#undef SDRAM_DEBUG
-
+#define ENABLE_ECC /* for ecc boards */
#define FALSE 0
#define TRUE 1
@@ -108,7 +108,27 @@ typedef struct {
unsigned char sz; /* log binary => Size = (4MByte<<sz) 5 = 128, 4 = 64, 3 = 32, 2 = 16, 1=8 */
unsigned char ecc; /* if true, ecc is enabled */
} sdram_t;
-
+#if defined(CONFIG_MIP405T)
+const sdram_t sdram_table[] = {
+ { 0x01, /* MIP405T Rev A, 64MByte -1 Board */
+ 3, /* Case Latenty = 3 */
+ 3, /* trp 20ns / 7.5 ns datain[27] */
+ 3, /* trcd 20ns /7.5 ns (datain[29]) */
+ 6, /* tras 44ns /7.5 ns (datain[30]) */
+ 4, /* tcpt 44 - 20ns = 24ns */
+ 3, /* Address Mode = 3 (13x9x4) */
+ 4, /* size value (64MByte) */
+ 0}, /* ECC disabled */
+ { 0xff, /* terminator */
+ 0xff,
+ 0xff,
+ 0xff,
+ 0xff,
+ 0xff,
+ 0xff,
+ 0xff }
+};
+#else
const sdram_t sdram_table[] = {
{ 0x0f, /* Rev A, 128MByte -1 Board */
3, /* Case Latenty = 3 */
@@ -155,7 +175,7 @@ const sdram_t sdram_table[] = {
0xff,
0xff }
};
-
+#endif /*CONFIG_MIP405T */
void SDRAM_err (const char *s)
{
#ifndef SDRAM_DEBUG
@@ -222,17 +242,54 @@ int init_sdram (void)
tctp_clocks;
unsigned char cal_val;
unsigned char bc;
- unsigned long pbcr, sdram_tim, sdram_bank;
- unsigned long *p;
+ unsigned long sdram_tim, sdram_bank;
- i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+ /*i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);*/
(void) get_clocks ();
gd->baudrate = 9600;
serial_init ();
+ /* set up the pld */
+ mtdcr (ebccfga, pb7ap);
+ mtdcr (ebccfgd, PLD_AP);
+ mtdcr (ebccfga, pb7cr);
+ mtdcr (ebccfgd, PLD_CR);
+ /* THIS IS OBSOLETE */
+ /* set up the board rev reg*/
+ mtdcr (ebccfga, pb5ap);
+ mtdcr (ebccfgd, BOARD_AP);
+ mtdcr (ebccfga, pb5cr);
+ mtdcr (ebccfgd, BOARD_CR);
+#ifdef SDRAM_DEBUG
+ /* get all informations from PLD */
+ serial_puts ("\nPLD Part 0x");
+ bc = in8 (PLD_PART_REG);
+ write_hex (bc);
+ serial_puts ("\nPLD Vers 0x");
+ bc = in8 (PLD_VERS_REG);
+ write_hex (bc);
+ serial_puts ("\nBoard Rev 0x");
+ bc = in8 (PLD_BOARD_CFG_REG);
+ write_hex (bc);
+ serial_puts ("\n");
+#endif
+ /* check board */
+ bc = in8 (PLD_PART_REG);
+#if defined(CONFIG_MIP405T)
+ if((bc & 0x80)==0)
+ SDRAM_err ("U-Boot configured for a MIP405T not for a MIP405!!!\n");
+#else
+ if((bc & 0x80)==0x80)
+ SDRAM_err ("U-Boot configured for a MIP405 not for a MIP405T!!!\n");
+#endif
+#if !defined(CONFIG_MIP405T)
+ /* since the ECC initialisation needs some time,
+ * we show that we're alive
+ */
serial_puts ("\nInitializing SDRAM, Please stand by");
+ /* set-up the chipselect machine */
mtdcr (ebccfga, pb0cr); /* get cs0 config reg */
- pbcr = mfdcr (ebccfgd);
- if ((pbcr & 0x00002000) == 0) {
+ tmp = mfdcr (ebccfgd);
+ if ((tmp & 0x00002000) == 0) {
/* MPS Boot, set up the flash */
mtdcr (ebccfga, pb1ap);
mtdcr (ebccfgd, FLASH_AP);
@@ -254,30 +311,8 @@ int init_sdram (void)
mtdcr (ebccfgd, UART1_AP);
mtdcr (ebccfga, pb3cr);
mtdcr (ebccfgd, UART1_CR);
-
- /* set up the pld */
- mtdcr (ebccfga, pb7ap);
- mtdcr (ebccfgd, PLD_AP);
- mtdcr (ebccfga, pb7cr);
- mtdcr (ebccfgd, PLD_CR);
- /* set up the board rev reg */
- mtdcr (ebccfga, pb5ap);
- mtdcr (ebccfgd, BOARD_AP);
- mtdcr (ebccfga, pb5cr);
- mtdcr (ebccfgd, BOARD_CR);
-
-
-#ifdef SDRAM_DEBUG
- out8 (PER_BOARD_ADDR, 0);
- bc = in8 (PER_BOARD_ADDR);
- serial_puts ("\nBoard Rev: ");
- write_hex (bc);
- serial_puts (" (PLD=");
- bc = in8 (PLD_BOARD_CFG_REG);
- write_hex (bc);
- serial_puts (")\n");
#endif
- bc = get_board_revcfg ();
+ bc = in8 (PLD_BOARD_CFG_REG);
#ifdef SDRAM_DEBUG
serial_puts ("\nstart SDRAM Setup\n");
serial_puts ("\nBoard Rev: ");
@@ -367,9 +402,10 @@ int init_sdram (void)
mtdcr (memcfga, mem_rtr);
mtdcr (memcfgd, tmp);
/* enable ECC if used */
-#if 1
+#if defined(ENABLE_ECC) && !defined(CONFIG_BOOT_PCI)
if (sdram_table[i].ecc) {
/* disable checking for all banks */
+ unsigned long *p;
#ifdef SDRAM_DEBUG
serial_puts ("disable ECC.. ");
#endif
@@ -398,8 +434,6 @@ int init_sdram (void)
*p++ = 0L;
if (!((unsigned long) p % 0x00800000)) /* every 8MByte */
serial_puts (".");
-
-
}
/* enable bank 0 */
serial_puts (".");
@@ -501,47 +535,69 @@ void ide_set_reset (int idereset)
/* ------------------------------------------------------------------------- */
-/*
- * Check Board Identity:
- */
-
-int checkboard (void)
+void get_pcbrev_var(unsigned char *pcbrev, unsigned char *var)
{
- unsigned char s[50];
- unsigned char bc, var, rc;
+#if !defined(CONFIG_MIP405T)
+ unsigned char bc,rc,tmp;
int i;
- backup_t *b = (backup_t *) s;
- puts ("Board: ");
-
- bc = get_board_revcfg ();
- var = ~bc;
- var &= 0xf;
+ bc = in8 (PLD_BOARD_CFG_REG);
+ tmp = ~bc;
+ tmp &= 0xf;
rc = 0;
for (i = 0; i < 4; i++) {
rc <<= 1;
- rc += (var & 0x1);
- var >>= 1;
+ rc += (tmp & 0x1);
+ tmp >>= 1;
}
rc++;
if((((bc>>4) & 0xf)==0x1) /* Rev B PCB with */
&& (rc==0x1)) /* Population Option 1 is a -3 */
rc=3;
+ *pcbrev=(bc >> 4) & 0xf;
+ *var=rc;
+#else
+ unsigned char bc;
+ bc = in8 (PLD_BOARD_CFG_REG);
+ *pcbrev=(bc >> 4) & 0xf;
+ *var=bc & 0xf ;
+#endif
+}
+
+/*
+ * Check Board Identity:
+ */
+/* serial String: "MIP405_1000" OR "MIP405T_1000" */
+#if !defined(CONFIG_MIP405T)
+#define BOARD_NAME "MIP405"
+#else
+#define BOARD_NAME "MIP405T"
+#endif
+
+int checkboard (void)
+{
+ unsigned char s[50];
+ unsigned char bc, var;
+ int i;
+ backup_t *b = (backup_t *) s;
+
+ puts ("Board: ");
+ get_pcbrev_var(&bc,&var);
i = getenv_r ("serial#", s, 32);
- if ((i == 0) || strncmp (s, "MIP405", 6)) {
+ if ((i == 0) || strncmp (s, BOARD_NAME,sizeof(BOARD_NAME))) {
get_backup_values (b);
if (strncmp (b->signature, "MPL\0", 4) != 0) {
- puts ("### No HW ID - assuming MIP405");
- printf ("-%d Rev %c", rc, 'A' + ((bc >> 4) & 0xf));
+ puts ("### No HW ID - assuming " BOARD_NAME);
+ printf ("-%d Rev %c", var, 'A' + bc);
} else {
- b->serial_name[6] = 0;
- printf ("%s-%d Rev %c SN: %s", b->serial_name, rc,
- 'A' + ((bc >> 4) & 0xf), &b->serial_name[7]);
+ b->serial_name[sizeof(BOARD_NAME)-1] = 0;
+ printf ("%s-%d Rev %c SN: %s", b->serial_name, var,
+ 'A' + bc, &b->serial_name[sizeof(BOARD_NAME)]);
}
} else {
- s[6] = 0;
- printf ("%s-%d Rev %c SN: %s", s, rc, 'A' + ((bc >> 4) & 0xf),
- &s[7]);
+ s[sizeof(BOARD_NAME)-1] = 0;
+ printf ("%s-%d Rev %c SN: %s", s, var,'A' + bc,
+ &s[sizeof(BOARD_NAME)]);
}
bc = in8 (PLD_EXT_CONF_REG);
printf (" Boot Config: 0x%x\n", bc);
@@ -613,30 +669,23 @@ static int test_dram (unsigned long ramsize)
int misc_init_r (void)
{
+ /* if MIP405 has booted from PCI, reset CCR0[24] as described in errata PCI_18 */
+ if (mfdcr(strap) & PSR_ROM_LOC)
+ mtspr(ccr0, (mfspr(ccr0) & ~0x80));
+
return (0);
}
void print_mip405_rev (void)
{
- unsigned char part, vers, cfg, rev;
-
- cfg = get_board_revcfg ();
- vers = cfg;
- vers &= 0xf;
- rev = (((vers & 0x1) ? 0x8 : 0) |
- ((vers & 0x2) ? 0x4 : 0) |
- ((vers & 0x4) ? 0x2 : 0) |
- ((vers & 0x8) ? 0x1 : 0));
-
- vers=16-rev;
- rev=vers;
- if((rev==1) && ((cfg >> 4)==1)) /* Rev B PCB and -1 is a -3 */
- rev=3;
+ unsigned char part, vers, pcbrev, var;
+
+ get_pcbrev_var(&pcbrev,&var);
part = in8 (PLD_PART_REG);
vers = in8 (PLD_VERS_REG);
- printf ("Rev: MIP405-%d Rev %c PLD%d Vers %d\n",
- rev, ((cfg >> 4) & 0xf) + 'A', part, vers);
+ printf ("Rev: " BOARD_NAME "-%d Rev %c PLD %d Vers %d\n",
+ var, pcbrev + 'A', part & 0x7F, vers);
}
extern void mem_test_reloc(void);
@@ -683,24 +732,32 @@ void print_mip405_info (void)
com_mode = in8 (PLD_COM_MODE_REG);
ext = in8 (PLD_EXT_CONF_REG);
- printf ("PLD Part %d version %d\n", part, vers);
+ printf ("PLD Part %d version %d\n", part & 0x7F, vers);
printf ("Board Revision %c\n", ((cfg >> 4) & 0xf) + 'A');
printf ("Population Options %d %d %d %d\n", (cfg) & 0x1,
(cfg >> 1) & 0x1, (cfg >> 2) & 0x1, (cfg >> 3) & 0x1);
printf ("User LED %s\n", (com_mode & 0x4) ? "on" : "off");
printf ("UART Clocks %d\n", (com_mode >> 4) & 0x3);
- printf ("Test ist %x\n", com_mode);
+#if !defined(CONFIG_MIP405T)
printf ("User Config Switch %d %d %d %d %d %d %d %d\n",
(ext) & 0x1, (ext >> 1) & 0x1, (ext >> 2) & 0x1,
(ext >> 3) & 0x1, (ext >> 4) & 0x1, (ext >> 5) & 0x1,
(ext >> 6) & 0x1, (ext >> 7) & 0x1);
printf ("SER1 uses handshakes %s\n",
(ext & 0x80) ? "DTR/DSR" : "RTS/CTS");
+#else
+ printf ("User Config Switch %d %d %d %d %d %d %d %d %d\n",
+ (ext) & 0x1, (ext >> 1) & 0x1, (ext >> 2) & 0x1,
+ (ext >> 3) & 0x1, (ext >> 4) & 0x1, (ext >> 5) & 0x1,
+ (ext >> 6) & 0x1,(ext >> 7) & 0x1,(ext >> 8) & 0x1);
+#endif
printf ("IDE Reset %s\n", (ext & 0x01) ? "asserted" : "not asserted");
printf ("IRQs:\n");
printf (" PIIX INTR: %s\n", (irq_reg & 0x80) ? "inactive" : "active");
+#if !defined(CONFIG_MIP405T)
printf (" UART0 IRQ: %s\n", (irq_reg & 0x40) ? "inactive" : "active");
printf (" UART1 IRQ: %s\n", (irq_reg & 0x20) ? "inactive" : "active");
+#endif
printf (" PIIX SMI: %s\n", (irq_reg & 0x10) ? "inactive" : "active");
printf (" PIIX INIT: %s\n", (irq_reg & 0x8) ? "inactive" : "active");
printf (" PIIX NMI: %s\n", (irq_reg & 0x4) ? "inactive" : "active");
diff --git a/board/mpl/mip405/u-boot.lds b/board/mpl/mip405/u-boot.lds
index 8ce0057..d2efd6d 100644
--- a/board/mpl/mip405/u-boot.lds
+++ b/board/mpl/mip405/u-boot.lds
@@ -31,6 +31,10 @@ SECTIONS
{
*(.resetvec)
} = 0xffff
+ .bootpg 0xFFFFF000 :
+ {
+ board/mpl/mip405/init.o (.bootpg)
+ } = 0xffff
/* Read-only sections, merged into text segment: */
. = + SIZEOF_HEADERS;
generated by cgit v1.1 at 2024-12-04 02:44:14 +0000