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uboot-1.1.4-kirkwood/board/siemens/pcu_e/pcu_e.c
Olaf Rempel f69754bccc u-boot 1.1.4
2024-01-07 23:57:24 +01:00

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/*
* (C) Copyright 2001
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <mpc8xx.h>
#include <commproc.h>
#include <i2c.h>
#include <command.h>
/* ------------------------------------------------------------------------- */
static long int dram_size (long int, long int *, long int);
static void puma_status (void);
static void puma_set_mode (int mode);
static int puma_init_done (void);
static void puma_load (ulong addr, ulong len);
/* ------------------------------------------------------------------------- */
#define _NOT_USED_ 0xFFFFFFFF
/*
* 50 MHz SDRAM access using UPM A
*/
const uint sdram_table[] = {
/*
* Single Read. (Offset 0 in UPM RAM)
*/
0x1f0dfc04, 0xeeafbc04, 0x11af7c04, 0xefbeec00,
0x1ffddc47, /* last */
/*
* SDRAM Initialization (offset 5 in UPM RAM)
*
* This is no UPM entry point. The following definition uses
* the remaining space to establish an initialization
* sequence, which is executed by a RUN command.
*
*/
0x1ffddc35, 0xefceac34, 0x1f3d5c35, /* last */
/*
* Burst Read. (Offset 8 in UPM RAM)
*/
0x1f0dfc04, 0xeeafbc04, 0x10af7c04, 0xf0affc00,
0xf0affc00, 0xf1affc00, 0xefbeec00, 0x1ffddc47, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Single Write. (Offset 18 in UPM RAM)
*/
0x1f0dfc04, 0xeeafac00, 0x01be4c04, 0x1ffddc47, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Write. (Offset 20 in UPM RAM)
*/
0x1f0dfc04, 0xeeafac00, 0x10af5c00, 0xf0affc00,
0xf0affc00, 0xe1beec04, 0x1ffddc47, /* last */
_NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Refresh (Offset 30 in UPM RAM)
*/
0x1ffd7c84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
0xfffffc84, 0xfffffc07, /* last */
_NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Exception. (Offset 3c in UPM RAM)
*/
0x7ffffc07, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_,
};
/* ------------------------------------------------------------------------- */
/*
* PUMA access using UPM B
*/
const uint puma_table[] = {
/*
* Single Read. (Offset 0 in UPM RAM)
*/
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_,
/*
* Precharge and MRS
*/
_NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Read. (Offset 8 in UPM RAM)
*/
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Single Write. (Offset 18 in UPM RAM)
*/
0x0ffff804, 0x0ffff400, 0x3ffffc47, /* last */
_NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Write. (Offset 20 in UPM RAM)
*/
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Refresh (Offset 30 in UPM RAM)
*/
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Exception. (Offset 3c in UPM RAM)
*/
0x7ffffc07, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_,
};
/* ------------------------------------------------------------------------- */
/*
* Check Board Identity:
*
*/
int checkboard (void)
{
puts ("Board: Siemens PCU E\n");
return (0);
}
/* ------------------------------------------------------------------------- */
long int initdram (int board_type)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immr->im_memctl;
long int size_b0, reg;
int i;
/*
* Configure UPMA for SDRAM
*/
upmconfig (UPMA, (uint *) sdram_table,
sizeof (sdram_table) / sizeof (uint));
memctl->memc_mptpr = CFG_MPTPR;
/* burst length=4, burst type=sequential, CAS latency=2 */
memctl->memc_mar = 0x00000088;
/*
* Map controller bank 2 to the SDRAM bank at preliminary address.
*/
#if PCU_E_WITH_SWAPPED_CS /* XXX */
memctl->memc_or5 = CFG_OR5_PRELIM;
memctl->memc_br5 = CFG_BR5_PRELIM;
#else /* XXX */
memctl->memc_or2 = CFG_OR2_PRELIM;
memctl->memc_br2 = CFG_BR2_PRELIM;
#endif /* XXX */
/* initialize memory address register */
memctl->memc_mamr = CFG_MAMR; /* refresh not enabled yet */
/* mode initialization (offset 5) */
#if PCU_E_WITH_SWAPPED_CS /* XXX */
udelay (200); /* 0x8000A105 */
memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (1) | MCR_MAD (0x05);
#else /* XXX */
udelay (200); /* 0x80004105 */
memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (1) | MCR_MAD (0x05);
#endif /* XXX */
/* run 2 refresh sequence with 4-beat refresh burst (offset 0x30) */
#if PCU_E_WITH_SWAPPED_CS /* XXX */
udelay (1); /* 0x8000A830 */
memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (8) | MCR_MAD (0x30);
#else /* XXX */
udelay (1); /* 0x80004830 */
memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (8) | MCR_MAD (0x30);
#endif /* XXX */
#if PCU_E_WITH_SWAPPED_CS /* XXX */
udelay (1); /* 0x8000A106 */
memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (1) | MCR_MAD (0x06);
#else /* XXX */
udelay (1); /* 0x80004106 */
memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (1) | MCR_MAD (0x06);
#endif /* XXX */
reg = memctl->memc_mamr;
reg &= ~MAMR_TLFA_MSK; /* switch timer loop ... */
reg |= MAMR_TLFA_4X; /* ... to 4x */
reg |= MAMR_PTAE; /* enable refresh */
memctl->memc_mamr = reg;
udelay (200);
/* Need at least 10 DRAM accesses to stabilize */
for (i = 0; i < 10; ++i) {
#if PCU_E_WITH_SWAPPED_CS /* XXX */
volatile unsigned long *addr =
(volatile unsigned long *) SDRAM_BASE5_PRELIM;
#else /* XXX */
volatile unsigned long *addr =
(volatile unsigned long *) SDRAM_BASE2_PRELIM;
#endif /* XXX */
unsigned long val;
val = *(addr + i);
*(addr + i) = val;
}
/*
* Check Bank 0 Memory Size for re-configuration
*/
#if PCU_E_WITH_SWAPPED_CS /* XXX */
size_b0 = dram_size (CFG_MAMR, (long *) SDRAM_BASE5_PRELIM, SDRAM_MAX_SIZE);
#else /* XXX */
size_b0 = dram_size (CFG_MAMR, (long *) SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);
#endif /* XXX */
memctl->memc_mamr = CFG_MAMR | MAMR_PTAE;
/*
* Final mapping:
*/
#if PCU_E_WITH_SWAPPED_CS /* XXX */
memctl->memc_or5 = ((-size_b0) & 0xFFFF0000) | SDRAM_TIMING;
memctl->memc_br5 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
#else /* XXX */
memctl->memc_or2 = ((-size_b0) & 0xFFFF0000) | SDRAM_TIMING;
memctl->memc_br2 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
#endif /* XXX */
udelay (1000);
/*
* Configure UPMB for PUMA
*/
upmconfig (UPMB, (uint *) puma_table,
sizeof (puma_table) / sizeof (uint));
return (size_b0);
}
/* ------------------------------------------------------------------------- */
/*
* Check memory range for valid RAM. A simple memory test determines
* the actually available RAM size between addresses `base' and
* `base + maxsize'. Some (not all) hardware errors are detected:
* - short between address lines
* - short between data lines
*/
static long int dram_size (long int mamr_value, long int *base,
long int maxsize)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immr->im_memctl;
memctl->memc_mamr = mamr_value;
return (get_ram_size (base, maxsize));
}
/* ------------------------------------------------------------------------- */
#if PCU_E_WITH_SWAPPED_CS /* XXX */
#define ETH_CFG_BITS (CFG_PB_ETH_CFG1 | CFG_PB_ETH_CFG2 | CFG_PB_ETH_CFG3 )
#else /* XXX */
#define ETH_CFG_BITS (CFG_PB_ETH_MDDIS | CFG_PB_ETH_CFG1 | \
CFG_PB_ETH_CFG2 | CFG_PB_ETH_CFG3 )
#endif /* XXX */
#define ETH_ALL_BITS (ETH_CFG_BITS | CFG_PB_ETH_POWERDOWN | CFG_PB_ETH_RESET)
void reset_phy (void)
{
immap_t *immr = (immap_t *) CFG_IMMR;
ulong value;
/* Configure all needed port pins for GPIO */
#if PCU_E_WITH_SWAPPED_CS /* XXX */
# ifdef CFG_ETH_MDDIS_VALUE
immr->im_ioport.iop_padat |= CFG_PA_ETH_MDDIS;
# else
immr->im_ioport.iop_padat &= ~(CFG_PA_ETH_MDDIS); /* Set low */
# endif
immr->im_ioport.iop_papar &= ~(CFG_PA_ETH_MDDIS); /* GPIO */
immr->im_ioport.iop_paodr &= ~(CFG_PA_ETH_MDDIS); /* active output */
immr->im_ioport.iop_padir |= CFG_PA_ETH_MDDIS; /* output */
#endif /* XXX */
immr->im_cpm.cp_pbpar &= ~(ETH_ALL_BITS); /* GPIO */
immr->im_cpm.cp_pbodr &= ~(ETH_ALL_BITS); /* active output */
value = immr->im_cpm.cp_pbdat;
/* Assert Powerdown and Reset signals */
value |= CFG_PB_ETH_POWERDOWN;
value &= ~(CFG_PB_ETH_RESET);
/* PHY configuration includes MDDIS and CFG1 ... CFG3 */
#if !PCU_E_WITH_SWAPPED_CS
# ifdef CFG_ETH_MDDIS_VALUE
value |= CFG_PB_ETH_MDDIS;
# else
value &= ~(CFG_PB_ETH_MDDIS);
# endif
#endif
#ifdef CFG_ETH_CFG1_VALUE
value |= CFG_PB_ETH_CFG1;
#else
value &= ~(CFG_PB_ETH_CFG1);
#endif
#ifdef CFG_ETH_CFG2_VALUE
value |= CFG_PB_ETH_CFG2;
#else
value &= ~(CFG_PB_ETH_CFG2);
#endif
#ifdef CFG_ETH_CFG3_VALUE
value |= CFG_PB_ETH_CFG3;
#else
value &= ~(CFG_PB_ETH_CFG3);
#endif
/* Drive output signals to initial state */
immr->im_cpm.cp_pbdat = value;
immr->im_cpm.cp_pbdir |= ETH_ALL_BITS;
udelay (10000);
/* De-assert Ethernet Powerdown */
immr->im_cpm.cp_pbdat &= ~(CFG_PB_ETH_POWERDOWN); /* Enable PHY power */
udelay (10000);
/* de-assert RESET signal of PHY */
immr->im_cpm.cp_pbdat |= CFG_PB_ETH_RESET;
udelay (1000);
}
/*-----------------------------------------------------------------------
* Board Special Commands: access functions for "PUMA" FPGA
*/
#if (CONFIG_COMMANDS & CFG_CMD_BSP)
#define PUMA_READ_MODE 0
#define PUMA_LOAD_MODE 1
int do_puma (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
ulong addr, len;
switch (argc) {
case 2: /* PUMA reset */
if (strncmp (argv[1], "stat", 4) == 0) { /* Reset */
puma_status ();
return 0;
}
break;
case 4: /* PUMA load addr len */
if (strcmp (argv[1], "load") != 0)
break;
addr = simple_strtoul (argv[2], NULL, 16);
len = simple_strtoul (argv[3], NULL, 16);
printf ("PUMA load: addr %08lX len %ld (0x%lX): ",
addr, len, len);
puma_load (addr, len);
return 0;
default:
break;
}
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
U_BOOT_CMD (puma, 4, 1, do_puma,
"puma - access PUMA FPGA\n",
"status - print PUMA status\n"
"puma load addr len - load PUMA configuration data\n");
#endif /* CFG_CMD_BSP */
/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */
static void puma_set_mode (int mode)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immr->im_memctl;
/* disable PUMA in memory controller */
#if PCU_E_WITH_SWAPPED_CS /* XXX */
memctl->memc_br3 = 0;
#else /* XXX */
memctl->memc_br4 = 0;
#endif /* XXX */
switch (mode) {
case PUMA_READ_MODE:
#if PCU_E_WITH_SWAPPED_CS /* XXX */
memctl->memc_or3 = PUMA_CONF_OR_READ;
memctl->memc_br3 = PUMA_CONF_BR_READ;
#else /* XXX */
memctl->memc_or4 = PUMA_CONF_OR_READ;
memctl->memc_br4 = PUMA_CONF_BR_READ;
#endif /* XXX */
break;
case PUMA_LOAD_MODE:
#if PCU_E_WITH_SWAPPED_CS /* XXX */
memctl->memc_or3 = PUMA_CONF_OR_LOAD;
memctl->memc_br3 = PUMA_CONF_BR_LOAD;
#else /* XXX */
memctl->memc_or4 = PUMA_CONF_OR_READ;
memctl->memc_br4 = PUMA_CONF_BR_READ;
#endif /* XXX */
break;
}
}
/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */
#define PUMA_INIT_TIMEOUT 1000 /* max. 1000 ms = 1 second */
static void puma_load (ulong addr, ulong len)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
volatile uchar *fpga_addr = (volatile uchar *) PUMA_CONF_BASE; /* XXX ??? */
uchar *data = (uchar *) addr;
int i;
/* align length */
if (len & 1)
++len;
/* Reset FPGA */
immr->im_ioport.iop_pcpar &= ~(CFG_PC_PUMA_INIT); /* make input */
immr->im_ioport.iop_pcso &= ~(CFG_PC_PUMA_INIT);
immr->im_ioport.iop_pcdir &= ~(CFG_PC_PUMA_INIT);
#if PCU_E_WITH_SWAPPED_CS /* XXX */
immr->im_cpm.cp_pbpar &= ~(CFG_PB_PUMA_PROG); /* GPIO */
immr->im_cpm.cp_pbodr &= ~(CFG_PB_PUMA_PROG); /* active output */
immr->im_cpm.cp_pbdat &= ~(CFG_PB_PUMA_PROG); /* Set low */
immr->im_cpm.cp_pbdir |= CFG_PB_PUMA_PROG; /* output */
#else
immr->im_ioport.iop_papar &= ~(CFG_PA_PUMA_PROG); /* GPIO */
immr->im_ioport.iop_padat &= ~(CFG_PA_PUMA_PROG); /* Set low */
immr->im_ioport.iop_paodr &= ~(CFG_PA_PUMA_PROG); /* active output */
immr->im_ioport.iop_padir |= CFG_PA_PUMA_PROG; /* output */
#endif /* XXX */
udelay (100);
#if PCU_E_WITH_SWAPPED_CS /* XXX */
immr->im_cpm.cp_pbdat |= CFG_PB_PUMA_PROG; /* release reset */
#else
immr->im_ioport.iop_padat |= CFG_PA_PUMA_PROG; /* release reset */
#endif /* XXX */
/* wait until INIT indicates completion of reset */
for (i = 0; i < PUMA_INIT_TIMEOUT; ++i) {
udelay (1000);
if (immr->im_ioport.iop_pcdat & CFG_PC_PUMA_INIT)
break;
}
if (i == PUMA_INIT_TIMEOUT) {
printf ("*** PUMA init timeout ***\n");
return;
}
puma_set_mode (PUMA_LOAD_MODE);
while (len--)
*fpga_addr = *data++;
puma_set_mode (PUMA_READ_MODE);
puma_status ();
}
/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */
static void puma_status (void)
{
/* Check state */
printf ("PUMA initialization is %scomplete\n",
puma_init_done ()? "" : "NOT ");
}
/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */
static int puma_init_done (void)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
/* make sure pin is GPIO input */
immr->im_ioport.iop_pcpar &= ~(CFG_PC_PUMA_DONE);
immr->im_ioport.iop_pcso &= ~(CFG_PC_PUMA_DONE);
immr->im_ioport.iop_pcdir &= ~(CFG_PC_PUMA_DONE);
return (immr->im_ioport.iop_pcdat & CFG_PC_PUMA_DONE) ? 1 : 0;
}
/* ------------------------------------------------------------------------- */
int misc_init_r (void)
{
ulong addr = 0;
ulong len = 0;
char *s;
printf ("PUMA: ");
if (puma_init_done ()) {
printf ("initialized\n");
return 0;
}
if ((s = getenv ("puma_addr")) != NULL)
addr = simple_strtoul (s, NULL, 16);
if ((s = getenv ("puma_len")) != NULL)
len = simple_strtoul (s, NULL, 16);
if ((!addr) || (!len)) {
printf ("net list undefined\n");
return 0;
}
printf ("loading... ");
puma_load (addr, len);
return (0);
}
/* ------------------------------------------------------------------------- */
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