diff options
author | 2023-10-10 14:33:42 +0000 | |
---|---|---|
committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/board/freescale/mpc8349emds/mpc8349emds.c | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/board/freescale/mpc8349emds/mpc8349emds.c')
-rw-r--r-- | roms/u-boot/board/freescale/mpc8349emds/mpc8349emds.c | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/roms/u-boot/board/freescale/mpc8349emds/mpc8349emds.c b/roms/u-boot/board/freescale/mpc8349emds/mpc8349emds.c new file mode 100644 index 000000000..5f38639af --- /dev/null +++ b/roms/u-boot/board/freescale/mpc8349emds/mpc8349emds.c @@ -0,0 +1,302 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2006 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + */ + +#include <common.h> +#include <fdt_support.h> +#include <init.h> +#include <ioports.h> +#include <mpc83xx.h> +#include <asm/bitops.h> +#include <asm/global_data.h> +#include <asm/mpc8349_pci.h> +#include <i2c.h> +#include <spi.h> +#include <miiphy.h> +#ifdef CONFIG_SYS_FSL_DDR2 +#include <fsl_ddr_sdram.h> +#else +#include <spd_sdram.h> +#endif +#include <linux/delay.h> + +#if defined(CONFIG_OF_LIBFDT) +#include <linux/libfdt.h> +#endif + +DECLARE_GLOBAL_DATA_PTR; + +int fixed_sdram(void); +void sdram_init(void); + +#if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83xx) +void ddr_enable_ecc(unsigned int dram_size); +#endif + +int board_early_init_f (void) +{ + volatile u8* bcsr = (volatile u8*)CONFIG_SYS_BCSR; + + /* Enable flash write */ + bcsr[1] &= ~0x01; + +#ifdef CONFIG_SYS_USE_MPC834XSYS_USB_PHY + /* Use USB PHY on SYS board */ + bcsr[5] |= 0x02; +#endif + + return 0; +} + +#define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1) + +int dram_init(void) +{ + volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR; + phys_size_t msize = 0; + + if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im) + return -ENXIO; + + /* DDR SDRAM - Main SODIMM */ + im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & LAWBAR_BAR; +#if defined(CONFIG_SPD_EEPROM) +#ifndef CONFIG_SYS_FSL_DDR2 + msize = spd_sdram() * 1024 * 1024; +#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) + ddr_enable_ecc(msize); +#endif +#else + msize = fsl_ddr_sdram(); +#endif +#else + msize = fixed_sdram() * 1024 * 1024; +#endif + /* + * Initialize SDRAM if it is on local bus. + */ + sdram_init(); + + /* set total bus SDRAM size(bytes) -- DDR */ + gd->ram_size = msize; + + return 0; +} + +#if !defined(CONFIG_SPD_EEPROM) +/************************************************************************* + * fixed sdram init -- doesn't use serial presence detect. + ************************************************************************/ +int fixed_sdram(void) +{ + volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR; + u32 msize = CONFIG_SYS_DDR_SIZE; + u32 ddr_size = msize << 20; /* DDR size in bytes */ + u32 ddr_size_log2 = __ilog2(ddr_size); + + im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000; + im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE); + +#if (CONFIG_SYS_DDR_SIZE != 256) +#warning Currenly any ddr size other than 256 is not supported +#endif +#ifdef CONFIG_DDR_II + im->ddr.csbnds[2].csbnds = CONFIG_SYS_DDR_CS2_BNDS; + im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG; + im->ddr.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0; + im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1; + im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2; + im->ddr.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3; + im->ddr.sdram_cfg = CONFIG_SYS_DDR_SDRAM_CFG; + im->ddr.sdram_cfg2 = CONFIG_SYS_DDR_SDRAM_CFG2; + im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE; + im->ddr.sdram_mode2 = CONFIG_SYS_DDR_MODE2; + im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL; + im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CNTL; +#else + +#if ((CONFIG_SYS_SDRAM_BASE & 0x00FFFFFF) != 0) +#warning Chip select bounds is only configurable in 16MB increments +#endif + im->ddr.csbnds[2].csbnds = + ((CONFIG_SYS_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) | + (((CONFIG_SYS_SDRAM_BASE + ddr_size - 1) >> + CSBNDS_EA_SHIFT) & CSBNDS_EA); + im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG; + + /* currently we use only one CS, so disable the other banks */ + im->ddr.cs_config[0] = 0; + im->ddr.cs_config[1] = 0; + im->ddr.cs_config[3] = 0; + + im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1; + im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2; + + im->ddr.sdram_cfg = + SDRAM_CFG_SREN +#if defined(CONFIG_DDR_2T_TIMING) + | SDRAM_CFG_2T_EN +#endif + | 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT; +#if defined (CONFIG_DDR_32BIT) + /* for 32-bit mode burst length is 8 */ + im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE); +#endif + im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE; + + im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL; +#endif + udelay(200); + + /* enable DDR controller */ + im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN; + return msize; +} +#endif/*!CONFIG_SYS_SPD_EEPROM*/ + + +int checkboard (void) +{ + /* + * Warning: do not read the BCSR registers here + * + * There is a timing bug in the 8349E and 8349EA BCSR code + * version 1.2 (read from BCSR 11) that will cause the CFI + * flash initialization code to overwrite BCSR 0, disabling + * the serial ports and gigabit ethernet + */ + + puts("Board: Freescale MPC8349EMDS\n"); + return 0; +} + +/* + * if MPC8349EMDS is soldered with SDRAM + */ +#if defined(CONFIG_SYS_BR2_PRELIM) \ + && defined(CONFIG_SYS_OR2_PRELIM) \ + && defined(CONFIG_SYS_LBLAWBAR2_PRELIM) \ + && defined(CONFIG_SYS_LBLAWAR2_PRELIM) +/* + * Initialize SDRAM memory on the Local Bus. + */ + +void sdram_init(void) +{ + volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + volatile fsl_lbc_t *lbc = &immap->im_lbc; + uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE; + const u32 lsdmr_common = LSDMR_RFEN | LSDMR_BSMA1516 | LSDMR_RFCR8 | + LSDMR_PRETOACT6 | LSDMR_ACTTORW3 | LSDMR_BL8 | + LSDMR_WRC3 | LSDMR_CL3; + /* + * Setup SDRAM Base and Option Registers, already done in cpu_init.c + */ + + /* setup mtrpt, lsrt and lbcr for LB bus */ + lbc->lbcr = 0x00000000; + /* LB refresh timer prescal, 266MHz/32 */ + lbc->mrtpr = 0x20000000; + /* LB sdram refresh timer, about 6us */ + lbc->lsrt = 0x32000000; + asm("sync"); + + /* + * Configure the SDRAM controller Machine Mode Register. + */ + + /* 0x40636733; normal operation */ + lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL; + + /* 0x68636733; precharge all the banks */ + lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL; + asm("sync"); + *sdram_addr = 0xff; + udelay(100); + + /* 0x48636733; auto refresh */ + lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH; + asm("sync"); + /*1 times*/ + *sdram_addr = 0xff; + udelay(100); + /*2 times*/ + *sdram_addr = 0xff; + udelay(100); + /*3 times*/ + *sdram_addr = 0xff; + udelay(100); + /*4 times*/ + *sdram_addr = 0xff; + udelay(100); + /*5 times*/ + *sdram_addr = 0xff; + udelay(100); + /*6 times*/ + *sdram_addr = 0xff; + udelay(100); + /*7 times*/ + *sdram_addr = 0xff; + udelay(100); + /*8 times*/ + *sdram_addr = 0xff; + udelay(100); + + /* 0x58636733; mode register write operation */ + lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW; + asm("sync"); + *sdram_addr = 0xff; + udelay(100); + + /* 0x40636733; normal operation */ + lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL; + asm("sync"); + *sdram_addr = 0xff; + udelay(100); +} +#else +void sdram_init(void) +{ +} +#endif + +/* + * The following are used to control the SPI chip selects for the SPI command. + */ +#ifdef CONFIG_MPC8XXX_SPI + +#define SPI_CS_MASK 0x80000000 + +int spi_cs_is_valid(unsigned int bus, unsigned int cs) +{ + return bus == 0 && cs == 0; +} + +void spi_cs_activate(struct spi_slave *slave) +{ + volatile gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0]; + + iopd->dat &= ~SPI_CS_MASK; +} + +void spi_cs_deactivate(struct spi_slave *slave) +{ + volatile gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0]; + + iopd->dat |= SPI_CS_MASK; +} +#endif + +#if defined(CONFIG_OF_BOARD_SETUP) +int ft_board_setup(void *blob, struct bd_info *bd) +{ + ft_cpu_setup(blob, bd); +#ifdef CONFIG_PCI + ft_pci_setup(blob, bd); +#endif + + return 0; +} +#endif |