diff options
Diffstat (limited to 'board/at91sam9g20ek/at91sam9g20ek.c')
| -rw-r--r-- | board/at91sam9g20ek/at91sam9g20ek.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/board/at91sam9g20ek/at91sam9g20ek.c b/board/at91sam9g20ek/at91sam9g20ek.c new file mode 100644 index 0000000000..1cd71fb314 --- /dev/null +++ b/board/at91sam9g20ek/at91sam9g20ek.c @@ -0,0 +1,198 @@ +/* + * (C) Copyright 2008 + * ATMEL Corporation + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.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 <asm/arch/hardware.h> + +#include <net.h> + +/* ------------------------------------------------------------------------- */ +/* + * Miscelaneous platform dependent initialisations + */ + +int board_init (void) +{ + DECLARE_GLOBAL_DATA_PTR; + + /* Enable Ctrlc */ + console_init_f (); + + /* Enable clocks for SMC */ + AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_SYS; + + /* memory and cpu-speed are setup before relocation */ + /* so we do _nothing_ here */ + + /* arch number of AT91SAM9G20EK-Board */ + gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9G20EK; + /* adress of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + + return 0; +} + + +int dram_init (void) +{ + DECLARE_GLOBAL_DATA_PTR; + + gd->bd->bi_dram[0].start = PHYS_SDRAM; + gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE; + return 0; +} + + +int board_late_init(void) +{ + DECLARE_GLOBAL_DATA_PTR; + + /* Fix Ethernet Initialization Bug when starting Linux from U-Boot */ +#if (CONFIG_COMMANDS & CFG_CMD_NET) + eth_init(gd->bd); +#endif + + return 0; +} + + + +int AT91F_Serial_Hardware_Init(void) +{ + +/* DBGU */ +#ifdef CONFIG_DBGU + *AT91C_PIOB_PDR = AT91C_PB15_DTXD | AT91C_PB14_DRXD; /* PB 15 & 15 */ + *AT91C_PMC_PCER = 1 << AT91C_ID_SYS; /* enable clock */ +#endif + +/* USART 0 */ +#ifdef CONFIG_USART0 + *AT91C_PIOB_PDR = AT91C_PB4_TXD0 | AT91C_PB5_RXD0; /* PB 4 & 5 */ + *AT91C_PMC_PCER |= 1 << AT91C_ID_US0; /* enable clock */ +#endif + +#ifdef CONFIG_USART1 + *AT91C_PIOB_PDR = AT91C_PB6_TXD1 | AT91C_PB7_RXD1; /* PB 6 & 7 */ + *AT91C_PMC_PCER |= 1 << AT91C_ID_US1; /* enable clock */ +#endif + +#ifdef CONFIG_USART2 + *AT91C_PIOB_PDR = AT91C_PB8_TXD2 | AT91C_PB9_RXD2; /* PB 8 & 9 */ + *AT91C_PMC_PCER |= 1 << AT91C_ID_US2; /* enable clock */ +#endif +} + + +#ifdef CONFIG_DRIVER_ETHER +#if (CONFIG_COMMANDS & CFG_CMD_NET) + +extern AT91PS_EMAC p_mac; + +int AT91F_EMAC_Hardware_Init(void) +{ + unsigned int periphAEnable, periphBEnable; + unsigned int val, i; + int ret; + + p_mac = AT91C_BASE_EMACB; + + /* Disable pull-up on: + RXDV (PA17) => PHY normal mode (not Test mode) + + ERX0 (PA14) => PHY ADDR0 + ERX1 (PA15) => PHY ADDR1 + ERX2 (PA25) => PHY ADDR2 + ERX3 (PA26) => PHY ADDR3 + ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0 + + PHY has internal pull-down + */ + + AT91C_BASE_PIOA->PIO_PPUDR = AT91C_PA14_ERX0 | AT91C_PA15_ERX1 | + AT91C_PA17_ERXDV | AT91C_PA25_ERX2 | + AT91C_PA26_ERX3 | AT91C_PA28_ECRS; + + /* Need to reset PHY -> 500ms reset */ + AT91C_BASE_RSTC->RSTC_RMR = (AT91C_RSTC_KEY & ((unsigned int)0xA5<<24)) | + (AT91C_RSTC_ERSTL & (0x0D << 8)) | AT91C_RSTC_URSTEN; + AT91C_BASE_RSTC->RSTC_RCR = (AT91C_RSTC_KEY & ((unsigned int)0xA5<<24)) | + AT91C_RSTC_EXTRST; + + /* Wait for end hardware reset */ + while (!(AT91C_BASE_RSTC->RSTC_RSR & AT91C_RSTC_NRSTL)); + + /* Resore NRST value */ + AT91C_BASE_RSTC->RSTC_RMR = (AT91C_RSTC_KEY & ((unsigned int)0xA5<<24)) | + (AT91C_RSTC_ERSTL & (0x0 << 8)) | AT91C_RSTC_URSTEN; + + /* Re-enable pull-up */ + AT91C_BASE_PIOA->PIO_PPUER = AT91C_PA14_ERX0 | AT91C_PA15_ERX1 | + AT91C_PA17_ERXDV | AT91C_PA25_ERX2 | + AT91C_PA26_ERX3 | AT91C_PA28_ECRS; + +#ifdef CONFIG_AT91C_USE_RMII + periphAEnable = ((unsigned int) AT91C_PA21_EMDIO ) | + ((unsigned int) AT91C_PA20_EMDC ) | + ((unsigned int) AT91C_PA19_ETXCK ) | + ((unsigned int) AT91C_PA18_ERXER ) | + ((unsigned int) AT91C_PA14_ERX0 ) | + ((unsigned int) AT91C_PA17_ERXDV ) | + ((unsigned int) AT91C_PA15_ERX1 ) | + ((unsigned int) AT91C_PA16_ETXEN ) | + ((unsigned int) AT91C_PA12_ETX0 ) | + ((unsigned int) AT91C_PA13_ETX1 ); + + periphBEnable = 0; +#else + periphAEnable = ((unsigned int) AT91C_PA21_EMDIO ) | + ((unsigned int) AT91C_PA19_ETXCK ) | + ((unsigned int) AT91C_PA20_EMDC ) | + ((unsigned int) AT91C_PA18_ERXER ) | + ((unsigned int) AT91C_PA14_ERX0 ) | + ((unsigned int) AT91C_PA17_ERXDV ) | + ((unsigned int) AT91C_PA15_ERX1 ) | + ((unsigned int) AT91C_PA16_ETXEN ) | + ((unsigned int) AT91C_PA12_ETX0 ) | + ((unsigned int) AT91C_PA13_ETX1 ); + + periphBEnable = ((unsigned int) AT91C_PA27_ERXCK ) | + ((unsigned int) AT91C_PA29_ECOL ) | + ((unsigned int) AT91C_PA25_ERX2 ) | + ((unsigned int) AT91C_PA26_ERX3 ) | + ((unsigned int) AT91C_PA22_ETXER ) | + ((unsigned int) AT91C_PA10_ETX2 ) | + ((unsigned int) AT91C_PA11_ETX3 ) | + ((unsigned int) AT91C_PA28_ECRS ); +#endif + AT91C_BASE_PIOA->PIO_ASR = periphAEnable; + AT91C_BASE_PIOA->PIO_BSR = periphBEnable; + AT91C_BASE_PIOA->PIO_PDR = (periphAEnable | periphBEnable); +} + +#endif /* CONFIG_COMMANDS & CFG_CMD_NET */ +#endif /* CONFIG_DRIVER_ETHER */ |