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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2013
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* Based on:
* Copyright (c) 2011 IDS GmbH, Germany
* ids8313.c - ids8313 board support.
*
* Sergej Stepanov <ste@ids.de>
* Based on board/freescale/mpc8313erdb/mpc8313erdb.c
*/
#include <common.h>
#include <fdt_support.h>
#include <init.h>
#include <mpc83xx.h>
#include <spi.h>
#include <asm/bitops.h>
#include <linux/delay.h>
#include <linux/libfdt.h>
DECLARE_GLOBAL_DATA_PTR;
/** CPLD contains the info about:
* - board type: *pCpld & 0xF0
* - hw-revision: *pCpld & 0x0F
* - cpld-revision: *pCpld+1
*/
int checkboard(void)
{
char *pcpld = (char *)CONFIG_SYS_CPLD_BASE;
u8 u8Vers = readb(pcpld);
u8 u8Revs = readb(pcpld + 1);
printf("Board: ");
switch (u8Vers & 0xF0) {
case '\x40':
printf("CU73X");
break;
case '\x50':
printf("CC73X");
break;
default:
printf("unknown(0x%02X, 0x%02X)\n", u8Vers, u8Revs);
return 0;
}
printf("\nInfo: HW-Rev: %i, CPLD-Rev: %i\n",
u8Vers & 0x0F, u8Revs & 0xFF);
return 0;
}
/*
* fixed sdram init
*/
int fixed_sdram(unsigned long config)
{
immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
u32 msize = CONFIG_SYS_DDR_SIZE << 20;
#ifndef CONFIG_SYS_RAMBOOT
u32 msize_log2 = __ilog2(msize);
out_be32(&im->sysconf.ddrlaw[0].bar,
(CONFIG_SYS_SDRAM_BASE & 0xfffff000));
out_be32(&im->sysconf.ddrlaw[0].ar, LBLAWAR_EN | (msize_log2 - 1));
out_be32(&im->sysconf.ddrcdr, CONFIG_SYS_DDRCDR_VALUE);
sync();
/*
* Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg],
* or the DDR2 controller may fail to initialize correctly.
*/
udelay(50000);
out_be32(&im->ddr.csbnds[0].csbnds, (msize - 1) >> 24);
out_be32(&im->ddr.cs_config[0], config);
/* currently we use only one CS, so disable the other banks */
out_be32(&im->ddr.cs_config[1], 0);
out_be32(&im->ddr.cs_config[2], 0);
out_be32(&im->ddr.cs_config[3], 0);
out_be32(&im->ddr.timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
out_be32(&im->ddr.timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
out_be32(&im->ddr.timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
out_be32(&im->ddr.timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
out_be32(&im->ddr.sdram_cfg, CONFIG_SYS_SDRAM_CFG);
out_be32(&im->ddr.sdram_cfg2, CONFIG_SYS_SDRAM_CFG2);
out_be32(&im->ddr.sdram_mode, CONFIG_SYS_DDR_MODE);
out_be32(&im->ddr.sdram_mode2, CONFIG_SYS_DDR_MODE_2);
out_be32(&im->ddr.sdram_interval, CONFIG_SYS_DDR_INTERVAL);
out_be32(&im->ddr.sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CNTL);
sync();
udelay(300);
/* enable DDR controller */
setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);
/* now check the real size */
disable_addr_trans();
msize = get_ram_size(CONFIG_SYS_SDRAM_BASE, msize);
enable_addr_trans();
#endif
return msize;
}
static int setup_sdram(void)
{
u32 msize = CONFIG_SYS_DDR_SIZE << 20;
long int size_01, size_02;
size_01 = fixed_sdram(CONFIG_SYS_DDR_CONFIG);
size_02 = fixed_sdram(CONFIG_SYS_DDR_CONFIG_256);
if (size_01 > size_02)
msize = fixed_sdram(CONFIG_SYS_DDR_CONFIG);
else
msize = size_02;
return msize;
}
int dram_init(void)
{
immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
fsl_lbc_t *lbc = &im->im_lbc;
u32 msize = 0;
if ((in_be32(&im->sysconf.immrbar) & IMMRBAR_BASE_ADDR) != (u32)im)
return -ENXIO;
msize = setup_sdram();
out_be32(&lbc->lbcr, (0x00040000 | (0xFF << LBCR_BMT_SHIFT) | 0xF));
out_be32(&lbc->mrtpr, 0x20000000);
sync();
gd->ram_size = msize;
return 0;
}
#if defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, struct bd_info *bd)
{
ft_cpu_setup(blob, bd);
return 0;
}
#endif
/* gpio mask for spi_cs */
#define IDSCPLD_SPI_CS_MASK 0x00000001
/* spi_cs multiplexed through cpld */
#define IDSCPLD_SPI_CS_BASE (CONFIG_SYS_CPLD_BASE + 0xf)
#if defined(CONFIG_MISC_INIT_R)
/* srp umcr mask for rts */
#define IDSUMCR_RTS_MASK 0x04
int misc_init_r(void)
{
/*srp*/
duart83xx_t *uart1 = &((immap_t *)CONFIG_SYS_IMMR)->duart[0];
duart83xx_t *uart2 = &((immap_t *)CONFIG_SYS_IMMR)->duart[1];
gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0];
u8 *spi_base = (u8 *)IDSCPLD_SPI_CS_BASE;
/* deactivate spi_cs channels */
out_8(spi_base, 0);
/* deactivate the spi_cs */
setbits_be32(&iopd->dir, IDSCPLD_SPI_CS_MASK);
/*srp - deactivate rts*/
out_8(&uart1->umcr, IDSUMCR_RTS_MASK);
out_8(&uart2->umcr, IDSUMCR_RTS_MASK);
gd->fdt_blob = (void *)CONFIG_SYS_FLASH_BASE;
return 0;
}
#endif
#ifdef CONFIG_MPC8XXX_SPI
/*
* The following are used to control the SPI chip selects
*/
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
return bus == 0 && ((cs >= 0) && (cs <= 2));
}
void spi_cs_activate(struct spi_slave *slave)
{
gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0];
u8 *spi_base = (u8 *)IDSCPLD_SPI_CS_BASE;
/* select the spi_cs channel */
out_8(spi_base, 1 << slave->cs);
/* activate the spi_cs */
clrbits_be32(&iopd->dat, IDSCPLD_SPI_CS_MASK);
}
void spi_cs_deactivate(struct spi_slave *slave)
{
gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0];
u8 *spi_base = (u8 *)IDSCPLD_SPI_CS_BASE;
/* select the spi_cs channel */
out_8(spi_base, 1 << slave->cs);
/* deactivate the spi_cs */
setbits_be32(&iopd->dat, IDSCPLD_SPI_CS_MASK);
}
#endif
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