uboot/u-boot-stm32mp-2020.01/board/freescale/p2041rdb/p2041rdb.c

243 lines
5.4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2011,2012 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <command.h>
#include <env.h>
#include <init.h>
#include <netdev.h>
#include <linux/compiler.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/cache.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_law.h>
#include <asm/fsl_serdes.h>
#include <asm/fsl_liodn.h>
#include <fm_eth.h>
extern void pci_of_setup(void *blob, bd_t *bd);
#include "cpld.h"
DECLARE_GLOBAL_DATA_PTR;
int checkboard(void)
{
u8 sw;
struct cpu_type *cpu = gd->arch.cpu;
unsigned int i;
printf("Board: %sRDB, ", cpu->name);
printf("CPLD version: %d.%d ", CPLD_READ(cpld_ver),
CPLD_READ(cpld_ver_sub));
sw = CPLD_READ(fbank_sel);
printf("vBank: %d\n", sw & 0x1);
/*
* Display the actual SERDES reference clocks as configured by the
* dip switches on the board. Note that the SWx registers could
* technically be set to force the reference clocks to match the
* values that the SERDES expects (or vice versa). For now, however,
* we just display both values and hope the user notices when they
* don't match.
*/
puts("SERDES Reference Clocks: ");
sw = in_8(&CPLD_SW(2)) >> 2;
for (i = 0; i < 2; i++) {
static const char * const freq[][3] = {{"0", "100", "125"},
{"100", "156.25", "125"}
};
unsigned int clock = (sw >> (2 * i)) & 3;
printf("Bank%u=%sMhz ", i+1, freq[i][clock]);
}
puts("\n");
return 0;
}
int board_early_init_f(void)
{
ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
/* board only uses the DDR_MCK0/1, so disable the DDR_MCK2/3 */
setbits_be32(&gur->ddrclkdr, 0x000f000f);
return 0;
}
#define CPLD_LANE_A_SEL 0x1
#define CPLD_LANE_G_SEL 0x2
#define CPLD_LANE_C_SEL 0x4
#define CPLD_LANE_D_SEL 0x8
void board_config_lanes_mux(void)
{
ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
int srds_prtcl = (in_be32(&gur->rcwsr[4]) &
FSL_CORENET_RCWSR4_SRDS_PRTCL) >> 26;
u8 mux = 0;
switch (srds_prtcl) {
case 0x2:
case 0x5:
case 0x9:
case 0xa:
case 0xf:
break;
case 0x8:
mux |= CPLD_LANE_C_SEL | CPLD_LANE_D_SEL;
break;
case 0x14:
mux |= CPLD_LANE_A_SEL;
break;
case 0x17:
mux |= CPLD_LANE_G_SEL;
break;
case 0x16:
case 0x19:
case 0x1a:
mux |= CPLD_LANE_G_SEL | CPLD_LANE_C_SEL | CPLD_LANE_D_SEL;
break;
case 0x1c:
mux |= CPLD_LANE_G_SEL | CPLD_LANE_A_SEL;
break;
default:
printf("Fman:Unsupported SerDes Protocol 0x%02x\n", srds_prtcl);
break;
}
CPLD_WRITE(serdes_mux, mux);
}
int board_early_init_r(void)
{
const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
int flash_esel = find_tlb_idx((void *)flashbase, 1);
/*
* Remap Boot flash + PROMJET region to caching-inhibited
* so that flash can be erased properly.
*/
/* Flush d-cache and invalidate i-cache of any FLASH data */
flush_dcache();
invalidate_icache();
if (flash_esel == -1) {
/* very unlikely unless something is messed up */
puts("Error: Could not find TLB for FLASH BASE\n");
flash_esel = 2; /* give our best effort to continue */
} else {
/* invalidate existing TLB entry for flash + promjet */
disable_tlb(flash_esel);
}
set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, flash_esel, BOOKE_PAGESZ_256M, 1);
board_config_lanes_mux();
return 0;
}
unsigned long get_board_sys_clk(unsigned long dummy)
{
u8 sysclk_conf = CPLD_READ(sysclk_sw1);
switch (sysclk_conf & 0x7) {
case CPLD_SYSCLK_83:
return 83333333;
case CPLD_SYSCLK_100:
return 100000000;
default:
return 66666666;
}
}
#define NUM_SRDS_BANKS 2
int misc_init_r(void)
{
serdes_corenet_t *regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
u32 actual[NUM_SRDS_BANKS];
unsigned int i;
u8 sw;
static const int freq[][3] = {
{0, SRDS_PLLCR0_RFCK_SEL_100, SRDS_PLLCR0_RFCK_SEL_125},
{SRDS_PLLCR0_RFCK_SEL_100, SRDS_PLLCR0_RFCK_SEL_156_25,
SRDS_PLLCR0_RFCK_SEL_125}
};
sw = in_8(&CPLD_SW(2)) >> 2;
for (i = 0; i < NUM_SRDS_BANKS; i++) {
unsigned int clock = (sw >> (2 * i)) & 3;
if (clock == 0x3) {
printf("Warning: SDREFCLK%u switch setting of '11' is "
"unsupported\n", i + 1);
break;
}
if (i == 0 && clock == 0)
puts("Warning: SDREFCLK1 switch setting of"
"'00' is unsupported\n");
else
actual[i] = freq[i][clock];
/*
* PC board uses a different CPLD with PB board, this CPLD
* has cpld_ver_sub = 1, and pcba_ver = 5. But CPLD on PB
* board has cpld_ver_sub = 0, and pcba_ver = 4.
*/
if ((i == 1) && (CPLD_READ(cpld_ver_sub) == 1) &&
(CPLD_READ(pcba_ver) == 5)) {
/* PC board bank2 frequency */
actual[i] = freq[i-1][clock];
}
}
for (i = 0; i < NUM_SRDS_BANKS; i++) {
u32 expected = in_be32(&regs->bank[i].pllcr0);
expected &= SRDS_PLLCR0_RFCK_SEL_MASK;
if (expected != actual[i]) {
printf("Warning: SERDES bank %u expects reference clock"
" %sMHz, but actual is %sMHz\n", i + 1,
serdes_clock_to_string(expected),
serdes_clock_to_string(actual[i]));
}
}
return 0;
}
int ft_board_setup(void *blob, bd_t *bd)
{
phys_addr_t base;
phys_size_t size;
ft_cpu_setup(blob, bd);
base = env_get_bootm_low();
size = env_get_bootm_size();
fdt_fixup_memory(blob, (u64)base, (u64)size);
#if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
fsl_fdt_fixup_dr_usb(blob, bd);
#endif
#ifdef CONFIG_PCI
pci_of_setup(blob, bd);
#endif
fdt_fixup_liodn(blob);
#ifdef CONFIG_SYS_DPAA_FMAN
fdt_fixup_fman_ethernet(blob);
#endif
return 0;
}