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-rwxr-xr-xboard/hermes/hermes.c605
1 files changed, 605 insertions, 0 deletions
diff --git a/board/hermes/hermes.c b/board/hermes/hermes.c
new file mode 100755
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--- /dev/null
+++ b/board/hermes/hermes.c
@@ -0,0 +1,605 @@
+/*
+ * (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
+
+/* ------------------------------------------------------------------------- */
+
+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)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ 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;
+}
+
+/* ------------------------------------------------------------------------- */
generated by cgit (git 2.34.1) at 2024-12-19 15:14:39 +0000