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https://github.com/AsahiLinux/u-boot
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fe7d654d04
Migrate the BR/OR settings to Kconfig. These must be known at compile time, so cannot be configured via DT. Configuration of this crucial variable should still be somewhat comfortable. Hence, make its fields configurable in Kconfig, and assemble the final value from these. Signed-off-by: Mario Six <mario.six@gdsys.cc>
154 lines
4 KiB
C
154 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2010-2011 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <asm/fsl_lbc.h>
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#ifdef CONFIG_MPC83xx
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#include "../mpc83xx/elbc/elbc.h"
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#endif
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#ifdef CONFIG_MPC85xx
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/* Boards should provide their own version of this if they use lbc sdram */
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static void __lbc_sdram_init(void)
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{
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/* Do nothing */
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}
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void lbc_sdram_init(void) __attribute__((weak, alias("__lbc_sdram_init")));
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#endif
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void print_lbc_regs(void)
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{
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int i;
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printf("\nLocal Bus Controller Registers\n");
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for (i = 0; i < 8; i++) {
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printf("BR%d\t0x%08X\tOR%d\t0x%08X\n",
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i, get_lbc_br(i), i, get_lbc_or(i));
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}
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printf("LBCR\t0x%08X\tLCRR\t0x%08X\n",
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get_lbc_lbcr(), get_lbc_lcrr());
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}
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void init_early_memctl_regs(void)
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{
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uint init_br1 = 1;
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#ifdef CONFIG_SYS_FSL_ERRATUM_ELBC_A001
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/* Set the local bus monitor timeout value to the maximum */
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clrsetbits_be32(&(LBC_BASE_ADDR)->lbcr, LBCR_BMT|LBCR_BMTPS, 0xf);
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#endif
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#ifdef CONFIG_MPC85xx
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/* if cs1 is already set via debugger, leave cs0/cs1 alone */
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if (get_lbc_br(1) & BR_V)
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init_br1 = 0;
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#endif
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/*
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* Map banks 0 (and maybe 1) to the FLASH banks 0 (and 1) at
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* preliminary addresses - these have to be modified later
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* when FLASH size has been determined
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*/
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#if defined(CONFIG_SYS_OR0_REMAP)
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set_lbc_or(0, CONFIG_SYS_OR0_REMAP);
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#endif
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#if defined(CONFIG_SYS_OR1_REMAP)
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set_lbc_or(1, CONFIG_SYS_OR1_REMAP);
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#endif
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/* now restrict to preliminary range */
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if (init_br1) {
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#if defined(CONFIG_SYS_BR0_PRELIM) && defined(CONFIG_SYS_OR0_PRELIM)
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set_lbc_br(0, CONFIG_SYS_BR0_PRELIM);
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set_lbc_or(0, CONFIG_SYS_OR0_PRELIM);
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#endif
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#if defined(CONFIG_SYS_BR1_PRELIM) && defined(CONFIG_SYS_OR1_PRELIM)
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set_lbc_or(1, CONFIG_SYS_OR1_PRELIM);
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set_lbc_br(1, CONFIG_SYS_BR1_PRELIM);
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#endif
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}
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#if defined(CONFIG_SYS_BR2_PRELIM) && defined(CONFIG_SYS_OR2_PRELIM)
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set_lbc_or(2, CONFIG_SYS_OR2_PRELIM);
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set_lbc_br(2, CONFIG_SYS_BR2_PRELIM);
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#endif
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#if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM)
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set_lbc_or(3, CONFIG_SYS_OR3_PRELIM);
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set_lbc_br(3, CONFIG_SYS_BR3_PRELIM);
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#endif
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#if defined(CONFIG_SYS_BR4_PRELIM) && defined(CONFIG_SYS_OR4_PRELIM)
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set_lbc_or(4, CONFIG_SYS_OR4_PRELIM);
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set_lbc_br(4, CONFIG_SYS_BR4_PRELIM);
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#endif
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#if defined(CONFIG_SYS_BR5_PRELIM) && defined(CONFIG_SYS_OR5_PRELIM)
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set_lbc_or(5, CONFIG_SYS_OR5_PRELIM);
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set_lbc_br(5, CONFIG_SYS_BR5_PRELIM);
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#endif
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#if defined(CONFIG_SYS_BR6_PRELIM) && defined(CONFIG_SYS_OR6_PRELIM)
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set_lbc_or(6, CONFIG_SYS_OR6_PRELIM);
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set_lbc_br(6, CONFIG_SYS_BR6_PRELIM);
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#endif
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#if defined(CONFIG_SYS_BR7_PRELIM) && defined(CONFIG_SYS_OR7_PRELIM)
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set_lbc_or(7, CONFIG_SYS_OR7_PRELIM);
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set_lbc_br(7, CONFIG_SYS_BR7_PRELIM);
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#endif
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}
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/*
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* Configures a UPM. The function requires the respective MxMR to be set
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* before calling this function. "size" is the number or entries, not a sizeof.
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*/
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void upmconfig(uint upm, uint *table, uint size)
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{
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fsl_lbc_t *lbc = LBC_BASE_ADDR;
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int i, mad, old_mad = 0;
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u32 mask = (~MxMR_OP_MSK & ~MxMR_MAD_MSK);
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u32 msel = BR_UPMx_TO_MSEL(upm);
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u32 *mxmr = &lbc->mamr + upm;
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volatile u8 *dummy = NULL;
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if (upm < UPMA || upm > UPMC) {
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printf("Error: %s() Bad UPM index %d\n", __func__, upm);
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hang();
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}
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/*
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* Find the address for the dummy write - scan all of the BRs until we
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* find one matching the UPM and extract the base address bits from it.
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*/
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for (i = 0; i < 8; i++) {
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if ((get_lbc_br(i) & (BR_V | BR_MSEL)) == (BR_V | msel)) {
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dummy = (volatile u8 *)(get_lbc_br(i) & BR_BA);
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break;
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}
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}
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if (!dummy) {
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printf("Error: %s() No matching BR\n", __func__);
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hang();
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}
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/* Program UPM using steps outlined by the reference manual */
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for (i = 0; i < size; i++) {
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out_be32(mxmr, (in_be32(mxmr) & mask) | MxMR_OP_WARR | i);
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out_be32(&lbc->mdr, table[i]);
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(void)in_be32(&lbc->mdr);
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*dummy = 0;
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do {
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mad = in_be32(mxmr) & MxMR_MAD_MSK;
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} while (mad <= old_mad && !(!mad && i == (size-1)));
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old_mad = mad;
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}
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/* Return to normal operation */
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out_be32(mxmr, (in_be32(mxmr) & mask) | MxMR_OP_NORM);
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}
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