| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright 2010-2011 Freescale Semiconductor, Inc. |
| */ |
| |
| #include <hang.h> |
| #include <init.h> |
| #include <asm/fsl_lbc.h> |
| |
| #ifdef CONFIG_MPC83xx |
| #include "../mpc83xx/elbc/elbc.h" |
| #endif |
| |
| #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("\nLocal Bus Controller Registers\n"); |
| for (i = 0; i < 8; 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) |
| init_br1 = 0; |
| #endif |
| |
| /* |
| * Map banks 0 (and maybe 1) to the FLASH banks 0 (and 1) at |
| * preliminary addresses - these have to be modified later |
| * when FLASH size has been determined |
| */ |
| #if defined(CONFIG_SYS_OR0_REMAP) |
| set_lbc_or(0, CONFIG_SYS_OR0_REMAP); |
| #endif |
| #if defined(CONFIG_SYS_OR1_REMAP) |
| set_lbc_or(1, CONFIG_SYS_OR1_REMAP); |
| #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(1, CONFIG_SYS_BR1_PRELIM); |
| #endif |
| } |
| |
| #if defined(CONFIG_SYS_BR2_PRELIM) && defined(CONFIG_SYS_OR2_PRELIM) |
| set_lbc_or(2, CONFIG_SYS_OR2_PRELIM); |
| set_lbc_br(2, CONFIG_SYS_BR2_PRELIM); |
| #endif |
| |
| #if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM) |
| set_lbc_or(3, CONFIG_SYS_OR3_PRELIM); |
| set_lbc_br(3, CONFIG_SYS_BR3_PRELIM); |
| #endif |
| |
| #if defined(CONFIG_SYS_BR4_PRELIM) && defined(CONFIG_SYS_OR4_PRELIM) |
| set_lbc_or(4, CONFIG_SYS_OR4_PRELIM); |
| set_lbc_br(4, CONFIG_SYS_BR4_PRELIM); |
| #endif |
| |
| #if defined(CONFIG_SYS_BR5_PRELIM) && defined(CONFIG_SYS_OR5_PRELIM) |
| set_lbc_or(5, CONFIG_SYS_OR5_PRELIM); |
| set_lbc_br(5, CONFIG_SYS_BR5_PRELIM); |
| #endif |
| |
| #if defined(CONFIG_SYS_BR6_PRELIM) && defined(CONFIG_SYS_OR6_PRELIM) |
| set_lbc_or(6, CONFIG_SYS_OR6_PRELIM); |
| set_lbc_br(6, CONFIG_SYS_BR6_PRELIM); |
| #endif |
| |
| #if defined(CONFIG_SYS_BR7_PRELIM) && defined(CONFIG_SYS_OR7_PRELIM) |
| set_lbc_or(7, CONFIG_SYS_OR7_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); |
| } |