/*
- * Copyright 2010 Freescale Semiconductor, Inc.
+ * Copyright 2010-2011 Freescale Semiconductor, Inc.
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * Version 2 as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <asm/fsl_lbc.h>
+#ifdef CONFIG_MPC85xx
+/* Boards should provide their own version of this if they use lbc sdram */
+static void __lbc_sdram_init(void)
+{
+ /* Do nothing */
+}
+void lbc_sdram_init(void) __attribute__((weak, alias("__lbc_sdram_init")));
+#endif
+
+
void print_lbc_regs(void)
{
int i;
printf("BR%d\t0x%08X\tOR%d\t0x%08X\n",
i, get_lbc_br(i), i, get_lbc_or(i));
}
+ printf("LBCR\t0x%08X\tLCRR\t0x%08X\n",
+ get_lbc_lbcr(), get_lbc_lcrr());
}
void init_early_memctl_regs(void)
{
uint init_br1 = 1;
+#ifdef CONFIG_SYS_FSL_ERRATUM_ELBC_A001
+ /* Set the local bus monitor timeout value to the maximum */
+ clrsetbits_be32(&(LBC_BASE_ADDR)->lbcr, LBCR_BMT|LBCR_BMTPS, 0xf);
+#endif
+
#ifdef CONFIG_MPC85xx
/* if cs1 is already set via debugger, leave cs0/cs1 alone */
if (get_lbc_br(1) & BR_V)
#endif
/* now restrict to preliminary range */
if (init_br1) {
+#if defined(CONFIG_SYS_BR0_PRELIM) && defined(CONFIG_SYS_OR0_PRELIM)
set_lbc_br(0, CONFIG_SYS_BR0_PRELIM);
set_lbc_or(0, CONFIG_SYS_OR0_PRELIM);
+#endif
#if defined(CONFIG_SYS_BR1_PRELIM) && defined(CONFIG_SYS_OR1_PRELIM)
set_lbc_or(1, CONFIG_SYS_OR1_PRELIM);
set_lbc_br(7, CONFIG_SYS_BR7_PRELIM);
#endif
}
+
+/*
+ * Configures a UPM. The function requires the respective MxMR to be set
+ * before calling this function. "size" is the number or entries, not a sizeof.
+ */
+void upmconfig(uint upm, uint *table, uint size)
+{
+ fsl_lbc_t *lbc = LBC_BASE_ADDR;
+ int i, mad, old_mad = 0;
+ u32 mask = (~MxMR_OP_MSK & ~MxMR_MAD_MSK);
+ u32 msel = BR_UPMx_TO_MSEL(upm);
+ u32 *mxmr = &lbc->mamr + upm;
+ volatile u8 *dummy = NULL;
+
+ if (upm < UPMA || upm > UPMC) {
+ printf("Error: %s() Bad UPM index %d\n", __func__, upm);
+ hang();
+ }
+
+ /*
+ * Find the address for the dummy write - scan all of the BRs until we
+ * find one matching the UPM and extract the base address bits from it.
+ */
+ for (i = 0; i < 8; i++) {
+ if ((get_lbc_br(i) & (BR_V | BR_MSEL)) == (BR_V | msel)) {
+ dummy = (volatile u8 *)(get_lbc_br(i) & BR_BA);
+ break;
+ }
+ }
+
+ if (!dummy) {
+ printf("Error: %s() No matching BR\n", __func__);
+ hang();
+ }
+
+ /* Program UPM using steps outlined by the reference manual */
+ for (i = 0; i < size; i++) {
+ out_be32(mxmr, (in_be32(mxmr) & mask) | MxMR_OP_WARR | i);
+ out_be32(&lbc->mdr, table[i]);
+ (void)in_be32(&lbc->mdr);
+ *dummy = 0;
+ do {
+ mad = in_be32(mxmr) & MxMR_MAD_MSK;
+ } while (mad <= old_mad && !(!mad && i == (size-1)));
+ old_mad = mad;
+ }
+
+ /* Return to normal operation */
+ out_be32(mxmr, (in_be32(mxmr) & mask) | MxMR_OP_NORM);
+}