| /* |
| * (C) Copyright 2007 - 2008 |
| * Heiko Schocher, DENX Software Engineering, hs@denx.de. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <common.h> |
| #include <mpc8260.h> |
| #include <ioports.h> |
| #include <malloc.h> |
| #include <asm/io.h> |
| |
| #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) |
| #include <libfdt.h> |
| #endif |
| |
| #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) |
| #include <i2c.h> |
| #endif |
| |
| #include "../common/common.h" |
| |
| /* |
| * I/O Port configuration table |
| * |
| * if conf is 1, then that port pin will be configured at boot time |
| * according to the five values podr/pdir/ppar/psor/pdat for that entry |
| */ |
| const iop_conf_t iop_conf_tab[4][32] = { |
| |
| /* Port A */ |
| { /* conf ppar psor pdir podr pdat */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA31 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA30 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA29 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA28 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA27 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA26 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA25 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA24 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA23 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA22 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA21 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA20 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA19 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA18 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA17 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA16 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA15 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA14 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA13 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA12 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA11 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA10 */ |
| { 1, 1, 0, 1, 0, 0 }, /* PA9 SMC2 TxD */ |
| { 1, 1, 0, 0, 0, 0 }, /* PA8 SMC2 RxD */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA7 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA6 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA5 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA4 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA3 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA2 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PA1 */ |
| { 0, 0, 0, 0, 0, 0 } /* PA0 */ |
| }, |
| |
| /* Port B */ |
| { /* conf ppar psor pdir podr pdat */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB31 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB30 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB29 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB28 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB27 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB26 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB25 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB24 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB23 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB22 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB21 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB20 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB19 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PB18 */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 } /* non-existent */ |
| }, |
| |
| /* Port C */ |
| { /* conf ppar psor pdir podr pdat */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC31 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC30 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC29 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC28 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC27 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC26 */ |
| { 1, 1, 0, 0, 0, 0 }, /* PC25 RxClk */ |
| { 1, 1, 0, 0, 0, 0 }, /* PC24 TxClk */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC23 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC22 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC21 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC20 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC19 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC18 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC17 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC16 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC15 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC14 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC13 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC12 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC11 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC10 */ |
| { 1, 1, 0, 0, 0, 0 }, /* PC9 SCC4: CTS */ |
| { 1, 1, 0, 0, 0, 0 }, /* PC8 SCC4: CD */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC7 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC6 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC5 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC4 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC3 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC2 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC1 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PC0 */ |
| }, |
| |
| /* Port D */ |
| { /* conf ppar psor pdir podr pdat */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD31 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD30 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD29 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD28 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD27 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD26 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD25 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD24 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD23 */ |
| { 1, 1, 0, 0, 0, 0 }, /* PD22 SCC4: RXD */ |
| { 1, 1, 0, 1, 0, 0 }, /* PD21 SCC4: TXD */ |
| { 1, 1, 0, 1, 0, 0 }, /* PD20 SCC4: RTS */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD19 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD18 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD17 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD16 */ |
| #if defined(CONFIG_HARD_I2C) |
| { 1, 1, 1, 0, 1, 0 }, /* PD15 I2C SDA */ |
| { 1, 1, 1, 0, 1, 0 }, /* PD14 I2C SCL */ |
| #else |
| { 1, 0, 0, 0, 1, 1 }, /* PD15 */ |
| { 1, 0, 0, 1, 1, 1 }, /* PD14 */ |
| #endif |
| { 0, 0, 0, 0, 0, 0 }, /* PD13 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD12 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD11 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD10 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD9 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD8 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD7 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD6 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD5 */ |
| { 0, 0, 0, 0, 0, 0 }, /* PD4 */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 }, /* non-existent */ |
| { 0, 0, 0, 0, 0, 0 } /* non-existent */ |
| } |
| }; |
| |
| /* |
| * Try SDRAM initialization with P/LSDMR=sdmr and ORx=orx |
| * |
| * This routine performs standard 8260 initialization sequence |
| * and calculates the available memory size. It may be called |
| * several times to try different SDRAM configurations on both |
| * 60x and local buses. |
| */ |
| static long int try_init(memctl8260_t *memctl, ulong sdmr, |
| ulong orx, uchar *base) |
| { |
| uchar c = 0xff; |
| ulong maxsize, size; |
| int i; |
| |
| /* |
| * We must be able to test a location outsize the maximum legal size |
| * to find out THAT we are outside; but this address still has to be |
| * mapped by the controller. That means, that the initial mapping has |
| * to be (at least) twice as large as the maximum expected size. |
| */ |
| maxsize = (1 + (~orx | 0x7fff))/* / 2*/; |
| |
| out_be32(&memctl->memc_or1, orx); |
| |
| /* |
| * Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35): |
| * |
| * "At system reset, initialization software must set up the |
| * programmable parameters in the memory controller banks registers |
| * (ORx, BRx, P/LSDMR). After all memory parameters are configured, |
| * system software should execute the following initialization sequence |
| * for each SDRAM device. |
| * |
| * 1. Issue a PRECHARGE-ALL-BANKS command |
| * 2. Issue eight CBR REFRESH commands |
| * 3. Issue a MODE-SET command to initialize the mode register |
| * |
| * The initial commands are executed by setting P/LSDMR[OP] and |
| * accessing the SDRAM with a single-byte transaction." |
| * |
| * The appropriate BRx/ORx registers have already been set when we |
| * get here. The SDRAM can be accessed at the address |
| * CONFIG_SYS_SDRAM_BASE. |
| */ |
| |
| out_be32(&memctl->memc_psdmr, sdmr | PSDMR_OP_PREA); |
| out_8(base, c); |
| |
| out_be32(&memctl->memc_psdmr, sdmr | PSDMR_OP_CBRR); |
| for (i = 0; i < 8; i++) |
| out_8(base, c); |
| |
| out_be32(&memctl->memc_psdmr, sdmr | PSDMR_OP_MRW); |
| /* setting MR on address lines */ |
| out_8((uchar *)(base + CONFIG_SYS_MRS_OFFS), c); |
| |
| out_be32(&memctl->memc_psdmr, sdmr | PSDMR_OP_NORM | PSDMR_RFEN); |
| out_8(base, c); |
| |
| size = get_ram_size((long *)base, maxsize); |
| out_be32(&memctl->memc_or1, orx | ~(size - 1)); |
| |
| return size; |
| } |
| |
| #ifdef CONFIG_SYS_SDRAM_LIST |
| |
| /* |
| * If CONFIG_SYS_SDRAM_LIST is defined, we cycle through all SDRAM |
| * configurations therein (should be from high to lower) to find the |
| * one actually matching the current configuration. |
| * CONFIG_SYS_PSDMR and CONFIG_SYS_OR1 will contain the base values which are |
| * common among all possible configurations; values in CONFIG_SYS_SDRAM_LIST |
| * (defined as the initialization value for the array of struct sdram_conf_s) |
| * will then be ORed with such base values. |
| */ |
| |
| struct sdram_conf_s { |
| ulong size; |
| int or1; |
| int psdmr; |
| }; |
| |
| static struct sdram_conf_s sdram_conf[] = CONFIG_SYS_SDRAM_LIST; |
| |
| static long probe_sdram(memctl8260_t *memctl) |
| { |
| int n = 0; |
| long psize = 0; |
| |
| for (n = 0; n < ARRAY_SIZE(sdram_conf); psize = 0, n++) { |
| psize = try_init(memctl, |
| CONFIG_SYS_PSDMR | sdram_conf[n].psdmr, |
| CONFIG_SYS_OR1 | sdram_conf[n].or1, |
| (uchar *) CONFIG_SYS_SDRAM_BASE); |
| debug("Probing %ld bytes returned %ld\n", |
| sdram_conf[n].size, psize); |
| if (psize == sdram_conf[n].size) |
| break; |
| } |
| return psize; |
| } |
| |
| #else /* CONFIG_SYS_SDRAM_LIST */ |
| |
| static long probe_sdram(memctl8260_t *memctl) |
| { |
| return try_init(memctl, CONFIG_SYS_PSDMR, CONFIG_SYS_OR1, |
| (uchar *) CONFIG_SYS_SDRAM_BASE); |
| } |
| #endif /* CONFIG_SYS_SDRAM_LIST */ |
| |
| |
| phys_size_t initdram(int board_type) |
| { |
| immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; |
| memctl8260_t *memctl = &immap->im_memctl; |
| |
| long psize; |
| |
| out_8(&memctl->memc_psrt, CONFIG_SYS_PSRT); |
| out_be16(&memctl->memc_mptpr, CONFIG_SYS_MPTPR); |
| |
| #ifndef CONFIG_SYS_RAMBOOT |
| /* 60x SDRAM setup: |
| */ |
| psize = probe_sdram(memctl); |
| #endif /* CONFIG_SYS_RAMBOOT */ |
| |
| icache_enable(); |
| |
| return psize; |
| } |
| |
| int checkboard(void) |
| { |
| #if defined(CONFIG_MGCOGE) |
| puts("Board: Keymile mgcoge"); |
| #else |
| puts("Board: Keymile mgcoge3ne"); |
| #endif |
| if (ethernet_present()) |
| puts(" with PIGGY."); |
| puts("\n"); |
| return 0; |
| } |
| |
| int last_stage_init(void) |
| { |
| struct bfticu_iomap *base = |
| (struct bfticu_iomap *)CONFIG_SYS_FPGA_BASE; |
| u8 dip_switch; |
| |
| dip_switch = in_8(&base->mswitch); |
| dip_switch &= BFTICU_DIPSWITCH_MASK; |
| /* dip switch 'full reset' or 'db erase' */ |
| if (dip_switch & 0x1 || dip_switch & 0x2) { |
| /* start bootloader */ |
| puts("DIP: Enabled\n"); |
| setenv("actual_bank", "0"); |
| } |
| set_km_env(); |
| return 0; |
| } |
| |
| #ifdef CONFIG_MGCOGE3NE |
| static void set_pin(int state, unsigned long mask); |
| |
| /* |
| * For mgcoge3ne boards, the mgcoge3un control is controlled from |
| * a GPIO line on the PPC CPU. If bobcatreset is set the line |
| * will toggle once what forces the mgocge3un part to restart |
| * immediately. |
| */ |
| static void handle_mgcoge3un_reset(void) |
| { |
| char *bobcatreset = getenv("bobcatreset"); |
| if (bobcatreset) { |
| if (strcmp(bobcatreset, "true") == 0) { |
| puts("Forcing bobcat reset\n"); |
| set_pin(0, 0x00000004); /* clear PD29 to reset arm */ |
| udelay(1000); |
| set_pin(1, 0x00000004); |
| } else |
| set_pin(1, 0x00000004); /* set PD29 to not reset arm */ |
| } |
| } |
| #endif |
| |
| int ethernet_present(void) |
| { |
| struct km_bec_fpga *base = |
| (struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE; |
| |
| return in_8(&base->bprth) & PIGGY_PRESENT; |
| } |
| |
| /* |
| * Early board initalization. |
| */ |
| int board_early_init_r(void) |
| { |
| struct km_bec_fpga *base = |
| (struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE; |
| |
| /* setup the UPIOx */ |
| /* General Unit Reset disabled, Flash Bank enabled, UnitLed on */ |
| out_8(&base->oprth, (WRG_RESET | H_OPORTS_14 | WRG_LED)); |
| /* SCC4 enable, halfduplex, FCC1 powerdown */ |
| out_8(&base->oprtl, (H_OPORTS_SCC4_ENA | H_OPORTS_SCC4_FD_ENA | |
| H_OPORTS_FCC1_PW_DWN)); |
| |
| #ifdef CONFIG_MGCOGE3NE |
| handle_mgcoge3un_reset(); |
| #endif |
| return 0; |
| } |
| |
| int hush_init_var(void) |
| { |
| ivm_read_eeprom(); |
| return 0; |
| } |
| |
| #define SDA_MASK 0x00010000 |
| #define SCL_MASK 0x00020000 |
| |
| static void set_pin(int state, unsigned long mask) |
| { |
| ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3); |
| |
| if (state) |
| setbits_be32(&iop->pdat, mask); |
| else |
| clrbits_be32(&iop->pdat, mask); |
| |
| setbits_be32(&iop->pdir, mask); |
| } |
| |
| static int get_pin(unsigned long mask) |
| { |
| ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3); |
| |
| clrbits_be32(&iop->pdir, mask); |
| return 0 != (in_be32(&iop->pdat) & mask); |
| } |
| |
| void set_sda(int state) |
| { |
| set_pin(state, SDA_MASK); |
| } |
| |
| void set_scl(int state) |
| { |
| set_pin(state, SCL_MASK); |
| } |
| |
| int get_sda(void) |
| { |
| return get_pin(SDA_MASK); |
| } |
| |
| int get_scl(void) |
| { |
| return get_pin(SCL_MASK); |
| } |
| |
| #if defined(CONFIG_HARD_I2C) |
| static void setports(int gpio) |
| { |
| ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3); |
| |
| if (gpio) { |
| clrbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK)); |
| clrbits_be32(&iop->podr, (SDA_MASK | SCL_MASK)); |
| } else { |
| setbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK)); |
| clrbits_be32(&iop->pdir, (SDA_MASK | SCL_MASK)); |
| setbits_be32(&iop->podr, (SDA_MASK | SCL_MASK)); |
| } |
| } |
| #endif |
| #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) |
| void ft_board_setup(void *blob, bd_t *bd) |
| { |
| ft_cpu_setup(blob, bd); |
| } |
| #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */ |