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https://github.com/brain-hackers/u-boot-brain
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4e779ad2e5
Microblaze uses gpio which is connected to the system reset. Currently gpio subsystem wasn't used for it. Add gpio driver and change Microblaze reset logic to be done via gpio subsystem. There are various configurations which Microblaze can have that's why gpio_alloc/gpio_alloc_dual(for dual channel) function has been introduced and gpio can be allocated dynamically. Adding several gpios IP is also possible and supported. For listing gpio configuration please use "gpio status" command This patch also remove one compilation warning: microblaze-generic.c: In function 'do_reset': microblaze-generic.c:38:47: warning: operation on '*1073741824u' may be undefined [-Wsequence-point] Signed-off-by: Michal Simek <michal.simek@xilinx.com>
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
/*
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* (C) Copyright 2007 Michal Simek
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*
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* Michal SIMEK <monstr@monstr.eu>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/* This is a board specific file. It's OK to include board specific
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* header files */
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#include <common.h>
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#include <config.h>
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#include <netdev.h>
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#include <asm/processor.h>
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#include <asm/microblaze_intc.h>
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#include <asm/asm.h>
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#include <asm/gpio.h>
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#ifdef CONFIG_XILINX_GPIO
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static int reset_pin = -1;
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#endif
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int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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#ifdef CONFIG_XILINX_GPIO
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if (reset_pin != -1)
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gpio_direction_output(reset_pin, 1);
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#endif
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#ifdef CONFIG_XILINX_TB_WATCHDOG
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hw_watchdog_disable();
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#endif
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puts ("Reseting board\n");
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__asm__ __volatile__ (" mts rmsr, r0;" \
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"bra r0");
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return 0;
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}
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int gpio_init (void)
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{
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#ifdef CONFIG_XILINX_GPIO
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reset_pin = gpio_alloc(CONFIG_SYS_GPIO_0_ADDR, "reset", 1);
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if (reset_pin != -1)
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gpio_request(reset_pin, "reset_pin");
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#endif
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return 0;
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}
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void board_init(void)
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{
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gpio_init();
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}
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int board_eth_init(bd_t *bis)
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{
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int ret = 0;
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#ifdef CONFIG_XILINX_AXIEMAC
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ret |= xilinx_axiemac_initialize(bis, XILINX_AXIEMAC_BASEADDR,
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XILINX_AXIDMA_BASEADDR);
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#endif
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#ifdef CONFIG_XILINX_EMACLITE
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u32 txpp = 0;
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u32 rxpp = 0;
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# ifdef CONFIG_XILINX_EMACLITE_TX_PING_PONG
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txpp = 1;
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# endif
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# ifdef CONFIG_XILINX_EMACLITE_RX_PING_PONG
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rxpp = 1;
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# endif
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ret |= xilinx_emaclite_initialize(bis, XILINX_EMACLITE_BASEADDR,
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txpp, rxpp);
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#endif
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#ifdef CONFIG_XILINX_LL_TEMAC
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# ifdef XILINX_LLTEMAC_BASEADDR
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# ifdef XILINX_LLTEMAC_FIFO_BASEADDR
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ret |= xilinx_ll_temac_eth_init(bis, XILINX_LLTEMAC_BASEADDR,
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XILINX_LL_TEMAC_M_FIFO, XILINX_LLTEMAC_FIFO_BASEADDR);
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# elif XILINX_LLTEMAC_SDMA_CTRL_BASEADDR
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# if XILINX_LLTEMAC_SDMA_USE_DCR == 1
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ret |= xilinx_ll_temac_eth_init(bis, XILINX_LLTEMAC_BASEADDR,
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XILINX_LL_TEMAC_M_SDMA_DCR,
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XILINX_LLTEMAC_SDMA_CTRL_BASEADDR);
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# else
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ret |= xilinx_ll_temac_eth_init(bis, XILINX_LLTEMAC_BASEADDR,
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XILINX_LL_TEMAC_M_SDMA_PLB,
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XILINX_LLTEMAC_SDMA_CTRL_BASEADDR);
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# endif
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# endif
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# endif
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# ifdef XILINX_LLTEMAC_BASEADDR1
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# ifdef XILINX_LLTEMAC_FIFO_BASEADDR1
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ret |= xilinx_ll_temac_eth_init(bis, XILINX_LLTEMAC_BASEADDR1,
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XILINX_LL_TEMAC_M_FIFO, XILINX_LLTEMAC_FIFO_BASEADDR1);
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# elif XILINX_LLTEMAC_SDMA_CTRL_BASEADDR1
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# if XILINX_LLTEMAC_SDMA_USE_DCR == 1
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ret |= xilinx_ll_temac_eth_init(bis, XILINX_LLTEMAC_BASEADDR1,
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XILINX_LL_TEMAC_M_SDMA_DCR,
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XILINX_LLTEMAC_SDMA_CTRL_BASEADDR1);
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# else
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ret |= xilinx_ll_temac_eth_init(bis, XILINX_LLTEMAC_BASEADDR1,
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XILINX_LL_TEMAC_M_SDMA_PLB,
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XILINX_LLTEMAC_SDMA_CTRL_BASEADDR1);
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# endif
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# endif
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# endif
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#endif
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return ret;
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}
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