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Diffstat (limited to 'board/balloon3/balloon3.c')
| -rw-r--r-- | board/balloon3/balloon3.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/board/balloon3/balloon3.c b/board/balloon3/balloon3.c new file mode 100644 index 0000000..2d6eabe --- /dev/null +++ b/board/balloon3/balloon3.c @@ -0,0 +1,228 @@ +/* + * Balloon3 Support + * + * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com> + * + * 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 <serial.h> +#include <asm/io.h> +#include <spartan3.h> +#include <command.h> + +DECLARE_GLOBAL_DATA_PTR; + +void balloon3_init_fpga(void); + +/* + * Miscelaneous platform dependent initialisations + */ + +int board_init(void) +{ + /* arch number of vpac270 */ + gd->bd->bi_arch_number = MACH_TYPE_BALLOON3; + + /* adress of boot parameters */ + gd->bd->bi_boot_params = 0xa0000100; + + /* Init the FPGA */ + balloon3_init_fpga(); + + return 0; +} + +struct serial_device *default_serial_console(void) +{ + return &serial_stuart_device; +} + +int dram_init(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[1].start = PHYS_SDRAM_2; + gd->bd->bi_dram[2].start = PHYS_SDRAM_3; + + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; + gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE; + gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE; + + return 0; +} + +#ifdef CONFIG_CMD_USB +int usb_board_init(void) +{ + writel((readl(UHCHR) | UHCHR_PCPL | UHCHR_PSPL) & + ~(UHCHR_SSEP0 | UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE), + UHCHR); + + writel(readl(UHCHR) | UHCHR_FSBIR, UHCHR); + + while (readl(UHCHR) & UHCHR_FSBIR) + ; + + writel(readl(UHCHR) & ~UHCHR_SSE, UHCHR); + writel((UHCHIE_UPRIE | UHCHIE_RWIE), UHCHIE); + + /* Clear any OTG Pin Hold */ + if (readl(PSSR) & PSSR_OTGPH) + writel(readl(PSSR) | PSSR_OTGPH, PSSR); + + writel(readl(UHCRHDA) & ~(0x200), UHCRHDA); + writel(readl(UHCRHDA) | 0x100, UHCRHDA); + + /* Set port power control mask bits, only 3 ports. */ + writel(readl(UHCRHDB) | (0x7<<17), UHCRHDB); + + /* enable port 2 */ + writel(readl(UP2OCR) | UP2OCR_HXOE | UP2OCR_HXS | + UP2OCR_DMPDE | UP2OCR_DPPDE, UP2OCR); + + return 0; +} + +void usb_board_init_fail(void) +{ + return; +} + +void usb_board_stop(void) +{ + writel(readl(UHCHR) | UHCHR_FHR, UHCHR); + udelay(11); + writel(readl(UHCHR) & ~UHCHR_FHR, UHCHR); + + writel(readl(UHCCOMS) | 1, UHCCOMS); + udelay(10); + + writel(readl(CKEN) & ~CKEN10_USBHOST, CKEN); + + return; +} +#endif + +#if defined(CONFIG_FPGA) +/* Toggle GPIO103 and GPIO104 -- PROGB and RDnWR */ +int fpga_pgm_fn(int nassert, int nflush, int cookie) +{ + if (nassert) + writel(0x80, GPCR3); + else + writel(0x80, GPSR3); + if (nflush) + writel(0x100, GPCR3); + else + writel(0x100, GPSR3); + return nassert; +} + +/* Check GPIO83 -- INITB */ +int fpga_init_fn(int cookie) +{ + return !(readl(GPLR2) & 0x80000); +} + +/* Check GPIO84 -- BUSY */ +int fpga_busy_fn(int cookie) +{ + return !(readl(GPLR2) & 0x100000); +} + +/* Check GPIO111 -- DONE */ +int fpga_done_fn(int cookie) +{ + return readl(GPLR3) & 0x8000; +} + +/* Configure GPIO104 as GPIO and deassert it */ +int fpga_pre_config_fn(int cookie) +{ + writel(readl(GAFR3_L) & ~0x30000, GAFR3_L); + writel(0x100, GPCR3); + return 0; +} + +/* Configure GPIO104 as nSKTSEL */ +int fpga_post_config_fn(int cookie) +{ + writel(readl(GAFR3_L) | 0x10000, GAFR3_L); + return 0; +} + +/* Toggle RDnWR */ +int fpga_wr_fn(int nassert_write, int flush, int cookie) +{ + udelay(1000); + + if (nassert_write) + writel(0x100, GPCR3); + else + writel(0x100, GPSR3); + + return nassert_write; +} + +/* Write program to the FPGA */ +int fpga_wdata_fn(uchar data, int flush, int cookie) +{ + writeb(data, 0x10f00000); + return 0; +} + +/* Toggle Clock pin -- NO-OP */ +int fpga_clk_fn(int assert_clk, int flush, int cookie) +{ + return assert_clk; +} + +/* Toggle ChipSelect pin -- NO-OP */ +int fpga_cs_fn(int assert_clk, int flush, int cookie) +{ + return assert_clk; +} + +Xilinx_Spartan3_Slave_Parallel_fns balloon3_fpga_fns = { + fpga_pre_config_fn, + fpga_pgm_fn, + fpga_init_fn, + NULL, /* err */ + fpga_done_fn, + fpga_clk_fn, + fpga_cs_fn, + fpga_wr_fn, + NULL, /* rdata */ + fpga_wdata_fn, + fpga_busy_fn, + NULL, /* abort */ + fpga_post_config_fn, +}; + +Xilinx_desc fpga = XILINX_XC3S1000_DESC(slave_parallel, + (void *)&balloon3_fpga_fns, 0); + +/* Initialize the FPGA */ +void balloon3_init_fpga(void) +{ + fpga_init(); + fpga_add(fpga_xilinx, &fpga); +} +#else +void balloon3_init_fpga(void) {} +#endif /* CONFIG_FPGA */ |