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u-boot/board/hermes/hermes.c

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/*
* (C) Copyright 2000
* 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 <commproc.h>
#include <mpc8xx.h>
#ifdef CONFIG_SHOW_BOOT_PROGRESS
# include <status_led.h>
# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
#else
# define SHOW_BOOT_PROGRESS(arg)
#endif
DECLARE_GLOBAL_DATA_PTR;
/* ------------------------------------------------------------------------- */
static long int dram_size (long int, long int *, long int);
static ulong board_init (void);
static void send_smi_frame (volatile scc_t * sp, volatile cbd_t * bd,
uchar * msg);
/* ------------------------------------------------------------------------- */
#define _NOT_USED_ 0xFFFFFFFF
const uint sdram_table[] = {
/*
* Single Read. (Offset 0 in UPMA RAM)
*/
0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
0x1ff77c47, /* last */
/*
* SDRAM Initialization (offset 5 in UPMA 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.
*
*/
0x1fe77c35, 0xffaffc34, 0x1fa57c35, /* last */
/*
* Burst Read. (Offset 8 in UPMA RAM)
*/
0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Single Write. (Offset 18 in UPMA RAM)
*/
0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Write. (Offset 20 in UPMA RAM)
*/
0x1f07fc04, 0xeeaebc00, 0x10ad4c00, 0xf0afcc00,
0xf0afcc00, 0xe1bb8c06, 0x1ff77c47, /* last */
_NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Refresh (Offset 30 in UPMA RAM)
*/
0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
0xfffffc84, 0xfffffc07, /* last */
_NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Exception. (Offset 3c in UPMA RAM)
*/
0x7ffffc07, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_,
};
/* ------------------------------------------------------------------------- */
/*
* Check Board Identity:
*
* Test ID string (HERMES...)
*
* Return code for board revision and network speed
*/
int checkboard (void)
{
char *s = getenv ("serial#");
char *e;
puts ("Board: ");
if (!s || strncmp (s, "HERMES", 6)) {
puts ("### No HW ID - assuming HERMES-PRO");
} else {
for (e = s; *e; ++e) {
if (*e == ' ')
break;
}
for (; s < e; ++s) {
putc (*s);
}
}
gd->board_type = board_init ();
printf (" Rev. %ld.x\n", (gd->board_type >> 16));
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 size, size8, size9;
upmconfig (UPMA, (uint *) sdram_table,
sizeof (sdram_table) / sizeof (uint));
/*
* Preliminary prescaler for refresh
*/
memctl->memc_mptpr = 0x0400;
memctl->memc_mar = 0x00000088;
/*
* Map controller banks 1 to the SDRAM banks at preliminary address
*/
memctl->memc_or1 = CFG_OR1_PRELIM;
memctl->memc_br1 = CFG_BR1_PRELIM;
/* HERMES-PRO boards have only one bank SDRAM */
udelay (200);
/* perform SDRAM initializsation sequence */
memctl->memc_mamr = 0xD0802114;
memctl->memc_mcr = 0x80002105;
udelay (1);
memctl->memc_mamr = 0xD0802118;
memctl->memc_mcr = 0x80002130;
udelay (1);
memctl->memc_mamr = 0xD0802114;
memctl->memc_mcr = 0x80002106;
udelay (1000);
/*
* Check Bank 0 Memory Size for re-configuration
*
* try 8 column mode
*/
size8 = dram_size (CFG_MAMR_8COL, (long *) SDRAM_BASE_PRELIM,
SDRAM_MAX_SIZE);
udelay (1000);
/*
* try 9 column mode
*/
size9 = dram_size (CFG_MAMR_9COL, (long *) SDRAM_BASE_PRELIM,
SDRAM_MAX_SIZE);
if (size8 < size9) { /* leave configuration at 9 columns */
size = size9;
/* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */
} else { /* back to 8 columns */
size = size8;
memctl->memc_mamr = CFG_MAMR_8COL;
udelay (500);
/* debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20); */
}
udelay (1000);
memctl->memc_or1 = ((-size) & 0xFFFF0000) | SDRAM_TIMING;
memctl->memc_br1 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
udelay (10000);
return (size);
}
/* ------------------------------------------------------------------------- */
/*
* 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 *immap = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
memctl->memc_mamr = mamr_value;
return (get_ram_size(base, maxsize));
}
/* ------------------------------------------------------------------------- */
#define PB_LED_3 0x00020000 /* Status LED's */
#define PB_LED_2 0x00010000
#define PB_LED_1 0x00008000
#define PB_LED_0 0x00004000
#define PB_LED_ALL (PB_LED_0 | PB_LED_1 | PB_LED_2 | PB_LED_3)
#define PC_REP_SPD1 0x00000800
#define PC_REP_SPD0 0x00000400
#define PB_RESET_2081 0x00000020 /* Reset PEB2081 */
#define PB_MAI_4 0x00000010 /* Configuration */
#define PB_MAI_3 0x00000008
#define PB_MAI_2 0x00000004
#define PB_MAI_1 0x00000002
#define PB_MAI_0 0x00000001
#define PB_MAI_ALL (PB_MAI_0 | PB_MAI_1 | PB_MAI_2 | PB_MAI_3 | PB_MAI_4)
#define PC_REP_MGRPRS 0x0200
#define PC_REP_SPD 0x0040 /* Select 100 Mbps */
#define PC_REP_RES 0x0004
#define PC_BIT14 0x0002 /* ??? */
#define PC_BIT15 0x0001 /* ??? ENDSL ?? */
/* ------------------------------------------------------------------------- */
static ulong board_init (void)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
ulong reg, revision, speed = 100;
int ethspeed;
char *s;
if ((s = getenv ("ethspeed")) != NULL) {
if (strcmp (s, "100") == 0) {
ethspeed = 100;
} else if (strcmp (s, "10") == 0) {
ethspeed = 10;
} else {
ethspeed = 0;
}
} else {
ethspeed = 0;
}
/* Configure Port B Output Pins => 0x0003cc3F */
reg = PB_LED_ALL | PC_REP_SPD1 | PC_REP_SPD0 | PB_RESET_2081 |
PB_MAI_ALL;
immr->im_cpm.cp_pbpar &= ~reg;
immr->im_cpm.cp_pbodr &= ~reg;
immr->im_cpm.cp_pbdat &= ~reg; /* all 0 */
immr->im_cpm.cp_pbdir |= reg;
/* Check hardware revision */
if ((immr->im_ioport.iop_pcdat & 0x0003) == 0x0003) {
/*
* Revision 3.x hardware
*/
revision = 3;
immr->im_ioport.iop_pcdat = 0x0240;
immr->im_ioport.iop_pcdir = (PC_REP_MGRPRS | PC_REP_SPD | PC_REP_RES | PC_BIT14); /* = 0x0246 */
immr->im_ioport.iop_pcdat |= PC_REP_RES;
} else {
immr->im_ioport.iop_pcdat = 0x0002;
immr->im_ioport.iop_pcdir = (PC_REP_MGRPRS | PC_REP_RES | PC_BIT14 | PC_BIT15); /* = 0x0207 */
if ((immr->im_ioport.iop_pcdat & PC_REP_SPD) == 0) {
/*
* Revision 2.x hardware: PC9 connected to PB21
*/
revision = 2;
if (ethspeed == 0) {
/* both 10 and 100 Mbps allowed:
* select 10 Mbps and autonegotiation
*/
puts (" [10+100]");
immr->im_cpm.cp_pbdat = 0; /* SPD1:SPD0 = 0:0 - autonegot. */
speed = 10;
} else if (ethspeed == 10) {
/* we are asked for 10 Mbps,
* so select 10 Mbps
*/
puts (" [10]");
immr->im_cpm.cp_pbdat = 0; /* ??? */
speed = 10;
} else {
/* anything else:
* select 100 Mbps
*/
puts (" [100]");
immr->im_cpm.cp_pbdat = PC_REP_SPD0 | PC_REP_SPD1;
/* SPD1:SPD0 = 1:1 - 100 Mbps */
speed = 100;
}
immr->im_ioport.iop_pcdat |= (PC_REP_RES | PC_BIT14);
/* must be run from RAM */
/* start_lxt980 (speed); */
/*************************/
} else {
/*
* Revision 1.x hardware
*/
revision = 1;
immr->im_ioport.iop_pcdat = PC_REP_MGRPRS | PC_BIT14; /* = 0x0202 */
immr->im_ioport.iop_pcdir = (PC_REP_MGRPRS | PC_REP_SPD | PC_REP_RES | PC_BIT14 | PC_BIT15); /* = 0x0247 */
if (ethspeed == 0) {
/* both 10 and 100 Mbps allowed:
* select 100 Mbps and autonegotiation
*/
puts (" [10+100]");
immr->im_cpm.cp_pbdat = 0; /* SPD1:SPD0 = 0:0 - autonegot. */
immr->im_ioport.iop_pcdat |= PC_REP_SPD;
} else if (ethspeed == 10) {
/* we are asked for 10 Mbps,
* so select 10 Mbps
*/
puts (" [10]");
immr->im_cpm.cp_pbdat = PC_REP_SPD0; /* SPD1:SPD0 = 0:1 - 10 Mbps */
} else {
/* anything else:
* select 100 Mbps
*/
puts (" [100]");
immr->im_cpm.cp_pbdat = PC_REP_SPD0 | PC_REP_SPD1;
/* SPD1:SPD0 = 1:1 - 100 Mbps */
immr->im_ioport.iop_pcdat |= PC_REP_SPD;
}
immr->im_ioport.iop_pcdat |= PC_REP_RES;
}
}
SHOW_BOOT_PROGRESS (0x00);
return ((revision << 16) | (speed & 0xFFFF));
}
/* ------------------------------------------------------------------------- */
#define SCC_SM 1 /* Index => SCC2 */
#define PROFF PROFF_SCC2
#define SMI_MSGLEN 8 /* Length of SMI Messages */
#define PHYGPCR_ADDR 0x109 /* Port Enable */
#define PHYPCR_ADDR 0x132 /* PHY Port Control Reg. (port 1) */
#define LEDPCR_ADDR 0x141 /* LED Port Control Reg. */
#define RPRESET_ADDR 0x144 /* Repeater Reset */
#define PHYPCR_SPEED 0x2000 /* on for 100 Mbps, off for 10 Mbps */
#define PHYPCR_AN 0x1000 /* on to enable Auto-Negotiation */
#define PHYPCR_REST_AN 0x0200 /* on to restart Auto-Negotiation */
#define PHYPCR_FDX 0x0100 /* on for Full Duplex, off for HDX */
#define PHYPCR_COLT 0x0080 /* on to enable COL signal test */
/* ------------------------------------------------------------------------- */
/*
* Must run from RAM:
* uses parameter RAM area which is used for stack while running from ROM
*/
void hermes_start_lxt980 (int speed)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
volatile cpm8xx_t *cp = (cpm8xx_t *) & (immr->im_cpm);
volatile scc_t *sp = (scc_t *) & (cp->cp_scc[SCC_SM]);
volatile cbd_t *bd;
volatile hdlc_pram_t *hp;
uchar smimsg[SMI_MSGLEN];
ushort phypcrval;
uint bd_off;
int pnr;
printf ("LXT9880: %3d Mbps\n", speed);
immr->im_ioport.iop_paodr |= 0x0008; /* init PAODR: PA12 (TXD2) open drain */
immr->im_ioport.iop_papar |= 0x400c; /* init PAPAR: TXD2, RXD2, BRGO4 */
immr->im_ioport.iop_padir &= 0xbff3; /* init PADIR: BRGO4 */
immr->im_ioport.iop_padir |= 0x4000;
/* get temporary BD; no need for permanent alloc */
bd_off = dpram_base_align (8);
bd = (cbd_t *) (immr->im_cpm.cp_dpmem + bd_off);
bd->cbd_bufaddr = 0;
bd->cbd_datlen = 0;
bd->cbd_sc = BD_SC_WRAP | BD_SC_LAST | BD_SC_INTRPT | BD_SC_TC;
/* init. baudrate generator BRG4 */
cp->cp_brgc4 = (0x00010000 | (50 << 1)); /* output 1 MHz */
cp->cp_sicr &= 0xFFFF00FF; /* SICR: mask SCC2 */
cp->cp_sicr |= 0x00001B00; /* SICR: SCC2 clk BRG4 */
/* init SCC_SM register */
sp->scc_psmr = 0x0000; /* init PSMR: no additional flags */
sp->scc_todr = 0x0000;
sp->scc_dsr = 0x7e7e;
/* init. SCC_SM parameter area */
hp = (hdlc_pram_t *) & cp->cp_dparam[PROFF];
hp->tbase = bd_off; /* offset from beginning of DPRAM */
hp->rfcr = 0x18;
hp->tfcr = 0x18;
hp->mrblr = 10;
hp->c_mask = 0x0000f0b8;
hp->c_pres = 0x0000ffff;
hp->disfc = 0;
hp->crcec = 0;
hp->abtsc = 0;
hp->nmarc = 0;
hp->retrc = 0;
hp->mflr = 10;
hp->rfthr = 1;
hp->hmask = 0;
hp->haddr1 = 0;
hp->haddr2 = 0;
hp->haddr3 = 0;
hp->haddr4 = 0;
cp->cp_cpcr = SCC_SM << 6 | 0x0001; /* SCC_SM: init TX/RX params */
while (cp->cp_cpcr & CPM_CR_FLG);
/* clear all outstanding SCC events */
sp->scc_scce = ~0;
/* enable transmitter: GSMR_L: TPL=2(16bits), TPP=3(all ones), ENT */
sp->scc_gsmrh = 0;
sp->scc_gsmrl |= SCC_GSMRL_TPL_16 | SCC_GSMRL_TPP_ALL1 |
SCC_GSMRL_ENT | SCC_GSMRL_MODE_HDLC;
#if 0
smimsg[0] = 0x00; /* CHIP/HUB ID */
smimsg[1] = 0x38; /* WRITE CMD */
smimsg[2] = (RPRESET_ADDR << 4) & 0xf0;
smimsg[3] = RPRESET_ADDR >> 4;
smimsg[4] = 0x01;
smimsg[5] = 0x00;
smimsg[6] = 0x00;
smimsg[7] = 0x00;
send_smi_frame (sp, bd, smimsg);
#endif
smimsg[0] = 0x7f; /* BROADCAST */
smimsg[1] = 0x34; /* ASSIGN HUB ID */
smimsg[2] = 0x00;
smimsg[3] = 0x00;
smimsg[4] = 0x00; /* HUB ID = 0 */
smimsg[5] = 0x00;
smimsg[6] = 0x00;
smimsg[7] = 0x00;
send_smi_frame (sp, bd, smimsg);
smimsg[0] = 0x7f; /* BROADCAST */
smimsg[1] = 0x3c; /* SET ARBOUT TO 0 */
smimsg[2] = 0x00; /* ADDRESS = 0 */
smimsg[3] = 0x00;
smimsg[4] = 0x00; /* DATA = 0 */
smimsg[5] = 0x00;
smimsg[6] = 0x00;
smimsg[7] = 0x00;
send_smi_frame (sp, bd, smimsg);
if (speed == 100) {
phypcrval = PHYPCR_SPEED; /* 100 MBIT, disable autoneg. */
} else {
phypcrval = 0; /* 10 MBIT, disable autoneg. */
}
/* send MSGs */
for (pnr = 0; pnr < 8; pnr++) {
smimsg[0] = 0x00; /* CHIP/HUB ID */
smimsg[1] = 0x38; /* WRITE CMD */
smimsg[2] = ((PHYPCR_ADDR + pnr) << 4) & 0xf0;
smimsg[3] = (PHYPCR_ADDR + pnr) >> 4;
smimsg[4] = (unsigned char) (phypcrval & 0xff);
smimsg[5] = (unsigned char) (phypcrval >> 8);
smimsg[6] = 0x00;
smimsg[7] = 0x00;
send_smi_frame (sp, bd, smimsg);
}
smimsg[0] = 0x00; /* CHIP/HUB ID */
smimsg[1] = 0x38; /* WRITE CMD */
smimsg[2] = (PHYGPCR_ADDR << 4) & 0xf0;
smimsg[3] = PHYGPCR_ADDR >> 4;
smimsg[4] = 0xff; /* enable port 1-8 */
smimsg[5] = 0x01; /* enable MII1 (0x01) */
smimsg[6] = 0x00;
smimsg[7] = 0x00;
send_smi_frame (sp, bd, smimsg);
smimsg[0] = 0x00; /* CHIP/HUB ID */
smimsg[1] = 0x38; /* WRITE CMD */
smimsg[2] = (LEDPCR_ADDR << 4) & 0xf0;
smimsg[3] = LEDPCR_ADDR >> 4;
smimsg[4] = 0xaa; /* Port 1-8 Conf.bits = 10 (Hardware control) */
smimsg[5] = 0xaa;
smimsg[6] = 0x00;
smimsg[7] = 0x00;
send_smi_frame (sp, bd, smimsg);
/*
* Disable Transmitter (so that we can free the BD, too)
*/
sp->scc_gsmrl &= ~SCC_GSMRL_ENT;
}
/* ------------------------------------------------------------------------- */
static void send_smi_frame (volatile scc_t * sp, volatile cbd_t * bd,
uchar * msg)
{
#ifdef DEBUG
unsigned hub, chip, cmd, length, addr;
hub = msg[0] & 0x1F;
chip = msg[0] >> 5;
cmd = msg[1] & 0x1F;
length = (msg[1] >> 5) | ((msg[2] & 0x0F) << 3);
addr = (msg[2] >> 4) | (msg[3] << 4);
printf ("SMI send: Hub %02x Chip %x Cmd %02x Len %d Addr %03x: "
"%02x %02x %02x %02x\n",
hub, chip, cmd, length, addr, msg[4], msg[5], msg[6], msg[7]);
#endif /* DEBUG */
bd->cbd_bufaddr = (uint) msg;
bd->cbd_datlen = SMI_MSGLEN;
bd->cbd_sc |= BD_SC_READY;
/* wait for msg transmitted */
while ((sp->scc_scce & 0x0002) == 0);
/* clear all events */
sp->scc_scce = ~0;
}
/* ------------------------------------------------------------------------- */
void show_boot_progress (int status)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
status ^= 0x0F;
status = (status & 0x0F) << 14;
immr->im_cpm.cp_pbdat = (immr->im_cpm.cp_pbdat & ~PB_LED_ALL) | status;
}
/* ------------------------------------------------------------------------- */
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