--- /dev/null
+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * Klaus Heydeck, Kieback & Peter GmbH & Co KG, heydeck@kieback-peter.de
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <libfdt.h>
+#include <mpc8xx.h>
+#include <hwconfig.h>
+#include <i2c.h>
+#include "../common/kup.h"
+#include <asm/io.h>
+
+static unsigned char swapbyte(unsigned char c);
+static int read_diag(void);
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* ----------------------------------------------------------------------- */
+
+#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.
+ *
+ */
+ 0x1FF77C35, 0xEFEABC34, 0x1FB57C35, /* 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, 0x10AD7C00, 0xF0AFFC00,
+ 0xF0AFFC00, 0xE1BBBC04, 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:
+ */
+
+int checkboard(void)
+{
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+ uchar rev,mod,tmp,pcf,ak_rev,ak_mod;
+
+ /*
+ * Init ChipSelect #4 (CAN + HW-Latch)
+ */
+ out_be32(&immap->im_memctl.memc_or4, CONFIG_SYS_OR4);
+ out_be32(&immap->im_memctl.memc_br4, CONFIG_SYS_BR4);
+
+ /*
+ * Init ChipSelect #5 (S1D13768)
+ */
+ out_be32(&immap->im_memctl.memc_or5, CONFIG_SYS_OR5);
+ out_be32(&immap->im_memctl.memc_br5, CONFIG_SYS_BR5);
+
+ tmp = swapbyte(in_8((unsigned char*) LATCH_ADDR));
+ rev = (tmp & 0xF8) >> 3;
+ mod = (tmp & 0x07);
+
+ i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+
+ if (read_diag())
+ gd->flags &= ~GD_FLG_SILENT;
+
+ printf("Board: KUP4K Rev %d.%d AK:",rev,mod);
+ /*
+ * TI Application report: Before using the IO as an input,
+ * a high must be written to the IO first
+ */
+ pcf = 0xFF;
+ i2c_write(0x21, 0, 0 , &pcf, 1);
+ if (i2c_read(0x21, 0, 0, &pcf, 1)) {
+ puts("n/a\n");
+ } else {
+ ak_rev = (pcf & 0xF8) >> 3;
+ ak_mod = (pcf & 0x07);
+ printf("%d.%d\n", ak_rev, ak_mod);
+ }
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+
+phys_size_t initdram(int board_type)
+{
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ long int size = 0;
+ uchar *latch, rev, tmp;
+
+ /*
+ * Init ChipSelect #4 (CAN + HW-Latch) to determine Hardware Revision
+ * Rev 1..6 -> 48 MB RAM; Rev >= 7 -> 96 MB
+ */
+ out_be32(&immap->im_memctl.memc_or4, CONFIG_SYS_OR4);
+ out_be32(&immap->im_memctl.memc_br4, CONFIG_SYS_BR4);
+
+ latch = (uchar *)0x90000200;
+ tmp = swapbyte(*latch);
+ rev = (tmp & 0xF8) >> 3;
+
+ upmconfig(UPMA, (uint *) sdram_table,
+ sizeof (sdram_table) / sizeof (uint));
+
+ out_be16(&memctl->memc_mptpr, CONFIG_SYS_MPTPR);
+
+ out_be32(&memctl->memc_mar, 0x00000088);
+ /* no refresh yet */
+ if(rev >= 7) {
+ out_be32(&memctl->memc_mamr,
+ CONFIG_SYS_MAMR_9COL & (~(MAMR_PTAE)));
+ } else {
+ out_be32(&memctl->memc_mamr,
+ CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)));
+ }
+
+ udelay(200);
+
+ /* perform SDRAM initializsation sequence */
+
+ /* SDRAM bank 0 */
+ out_be32(&memctl->memc_mcr, 0x80002105);
+ udelay(1);
+ out_be32(&memctl->memc_mcr, 0x80002830); /* execute twice */
+ udelay(1);
+ out_be32(&memctl->memc_mcr, 0x80002106); /* RUN MRS Pattern from loc 6 */
+ udelay(1);
+
+ /* SDRAM bank 1 */
+ out_be32(&memctl->memc_mcr, 0x80004105);
+ udelay(1);
+ out_be32(&memctl->memc_mcr, 0x80004830); /* execute twice */
+ udelay(1);
+ out_be32(&memctl->memc_mcr, 0x80004106); /* RUN MRS Pattern from loc 6 */
+ udelay(1);
+
+ /* SDRAM bank 2 */
+ out_be32(&memctl->memc_mcr, 0x80006105);
+ udelay(1);
+ out_be32(&memctl->memc_mcr, 0x80006830); /* execute twice */
+ udelay(1);
+ out_be32(&memctl->memc_mcr, 0x80006106); /* RUN MRS Pattern from loc 6 */
+ udelay(1);
+
+ setbits_be32(&memctl->memc_mamr, MAMR_PTAE); /* enable refresh */
+ udelay(1000);
+
+ out_be16(&memctl->memc_mptpr, CONFIG_SYS_MPTPR);
+ udelay(1000);
+ if(rev >= 7) {
+ size = 32 * 3 * 1024 * 1024;
+ out_be32(&memctl->memc_or1, CONFIG_SYS_OR1_9COL);
+ out_be32(&memctl->memc_br1, CONFIG_SYS_BR1_9COL);
+ out_be32(&memctl->memc_or2, CONFIG_SYS_OR2_9COL);
+ out_be32(&memctl->memc_br2, CONFIG_SYS_BR2_9COL);
+ out_be32(&memctl->memc_or3, CONFIG_SYS_OR3_9COL);
+ out_be32(&memctl->memc_br3, CONFIG_SYS_BR3_9COL);
+ } else {
+ size = 16 * 3 * 1024 * 1024;
+ out_be32(&memctl->memc_or1, CONFIG_SYS_OR1_8COL);
+ out_be32(&memctl->memc_br1, CONFIG_SYS_BR1_8COL);
+ out_be32(&memctl->memc_or2, CONFIG_SYS_OR2_8COL);
+ out_be32(&memctl->memc_br2, CONFIG_SYS_BR2_8COL);
+ out_be32(&memctl->memc_or3, CONFIG_SYS_OR3_8COL);
+ out_be32(&memctl->memc_br3, CONFIG_SYS_BR3_8COL);
+ }
+ return (size);
+}
+
+/* ----------------------------------------------------------------------- */
+
+
+int misc_init_r(void)
+{
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+
+#ifdef CONFIG_IDE_LED
+ /* Configure PA8 as output port */
+ setbits_be16(&immap->im_ioport.iop_padir, PA_8);
+ setbits_be16(&immap->im_ioport.iop_paodr, PA_8);
+ clrbits_be16(&immap->im_ioport.iop_papar, PA_8);
+ setbits_be16(&immap->im_ioport.iop_padat, PA_8); /* turn it off */
+#endif
+ load_sernum_ethaddr();
+ setenv("hw","4k");
+ poweron_key();
+ return (0);
+}
+
+
+static int read_diag(void)
+{
+ int diag;
+ immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+
+ clrbits_be16(&immr->im_ioport.iop_pcdir, PC_4); /* input */
+ clrbits_be16(&immr->im_ioport.iop_pcpar, PC_4); /* gpio */
+ setbits_be16(&immr->im_ioport.iop_pcdir, PC_5); /* output */
+ clrbits_be16(&immr->im_ioport.iop_pcpar, PC_4); /* gpio */
+ setbits_be16(&immr->im_ioport.iop_pcdat, PC_5); /* 1 */
+ udelay(500);
+ if (in_be16(&immr->im_ioport.iop_pcdat) & PC_4) {
+ clrbits_be16(&immr->im_ioport.iop_pcdat, PC_5);/* 0 */
+ udelay(500);
+ if(in_be16(&immr->im_ioport.iop_pcdat) & PC_4)
+ diag = 0;
+ else
+ diag = 1;
+ } else {
+ diag = 0;
+ }
+ clrbits_be16(&immr->im_ioport.iop_pcdir, PC_5); /* input */
+ return (diag);
+}
+
+static unsigned char swapbyte(unsigned char c)
+{
+ unsigned char result = 0;
+ int i = 0;
+
+ for(i = 0; i < 8; ++i) {
+ result = result << 1;
+ result |= (c & 1);
+ c = c >> 1;
+ }
+ return result;
+}
+
+/*
+ * Device Tree Support
+ */
+#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+ ft_cpu_setup(blob, bd);
+}
+#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
Code Review / kvmfornfv.git / blobdiff