The bootsource functions are not specific to the first stage bootloader. They may also be used for detecting the bootsource to decide where to load the environment from. Also clean up includes in board files. Signed-off-by: Teresa Gámez <t.gamez@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
198 lines
5.3 KiB
C
198 lines
5.3 KiB
C
/*
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* This code is based on:
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* git://github.com/swetland/omap4boot.git
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*/
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/*
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* Copyright (C) 2010 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <common.h>
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#include <mach/omap4-silicon.h>
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#include <mach/omap4_rom_usb.h>
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#include <mach/generic.h>
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#include <init.h>
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static struct omap4_usbboot omap4_usbboot_data;
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int omap4_usbboot_open(void)
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{
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int (*rom_get_per_driver)(struct per_driver **io, u32 device_type);
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int (*rom_get_per_device)(struct per_handle **rh);
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struct per_handle *boot;
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int n;
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u32 base;
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if (omap4_revision() >= OMAP4460_ES1_0)
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base = PUBLIC_API_BASE_4460;
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else
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base = PUBLIC_API_BASE_4430;
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rom_get_per_driver = API(base + PUBLIC_GET_DRIVER_PER_OFFSET);
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rom_get_per_device = API(base + PUBLIC_GET_DEVICE_PER_OFFSET);
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n = rom_get_per_device(&boot);
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if (n)
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return n;
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if ((boot->device_type != DEVICE_USB) &&
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(boot->device_type != DEVICE_USBEXT))
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return 0;
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memset(&omap4_usbboot_data, 0, sizeof(omap4_usbboot_data));
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n = rom_get_per_driver(&omap4_usbboot_data.io, boot->device_type);
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if (n)
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return n;
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omap4_usbboot_data.dread.status = -1;
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omap4_usbboot_data.dread.xfer_mode = boot->xfer_mode;
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omap4_usbboot_data.dread.options = boot->options;
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omap4_usbboot_data.dread.device_type = boot->device_type;
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omap4_usbboot_data.dwrite.status = -1;
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omap4_usbboot_data.dwrite.xfer_mode = boot->xfer_mode;
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omap4_usbboot_data.dwrite.options = boot->options;
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omap4_usbboot_data.dwrite.device_type = boot->device_type;
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__asm__ __volatile__ ("cpsie i\n");
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omap4_usbboot_data.ready = 1;
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omap4_usbboot_puts("USB communications initialized\n");
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return 0;
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}
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core_initcall(omap4_usbboot_open);
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int omap4_usbboot_ready(void){
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return omap4_usbboot_data.ready;
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}
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static void rom_read_callback(struct per_handle *rh)
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{
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omap4_usbboot_data.dread.status = rh->status;
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return;
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}
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void omap4_usbboot_queue_read(void *data, unsigned len)
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{
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int n;
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omap4_usbboot_data.dread.data = data;
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omap4_usbboot_data.dread.length = len;
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omap4_usbboot_data.dread.status = STATUS_WAITING;
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omap4_usbboot_data.dread.xfer_mode = 1;
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omap4_usbboot_data.dread.callback = rom_read_callback;
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n = omap4_usbboot_data.io->read(&omap4_usbboot_data.dread);
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if (n)
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omap4_usbboot_data.dread.status = n;
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}
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int omap4_usbboot_wait_read(void)
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{
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int ret;
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while (omap4_usbboot_data.dread.status == STATUS_WAITING)
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/* cpu_relax(); */
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barrier();
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ret = omap4_usbboot_data.dread.status;
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omap4_usbboot_data.dread.status = -1;
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return ret;
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}
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int omap4_usbboot_is_read_waiting(void)
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{
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barrier();
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return omap4_usbboot_data.dread.status == STATUS_WAITING;
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}
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int omap4_usbboot_is_read_ok(void)
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{
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barrier();
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return omap4_usbboot_data.dread.status == STATUS_OKAY;
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}
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static void rom_write_callback(struct per_handle *rh)
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{
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omap4_usbboot_data.dwrite.status = rh->status;
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return;
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}
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void omap4_usbboot_queue_write(void *data, unsigned len)
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{
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int n;
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omap4_usbboot_data.dwrite.data = data;
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omap4_usbboot_data.dwrite.length = len;
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omap4_usbboot_data.dwrite.status = STATUS_WAITING;
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omap4_usbboot_data.dwrite.xfer_mode = 1;
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omap4_usbboot_data.dwrite.callback = rom_write_callback;
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n = omap4_usbboot_data.io->write(&omap4_usbboot_data.dwrite);
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if (n)
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omap4_usbboot_data.dwrite.status = n;
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}
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int omap4_usbboot_wait_write(void)
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{
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int ret;
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while (omap4_usbboot_data.dwrite.status == STATUS_WAITING)
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/* cpu_relax(); */
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barrier();
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ret = omap4_usbboot_data.dwrite.status;
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omap4_usbboot_data.dwrite.status = -1;
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return ret;
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}
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#define USB_MAX_IO 65536
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int omap4_usbboot_read(void *data, unsigned len)
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{
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unsigned xfer;
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unsigned char *x = data;
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int n;
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while (len > 0) {
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xfer = (len > USB_MAX_IO) ? USB_MAX_IO : len;
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omap4_usbboot_queue_read(x, xfer);
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n = omap4_usbboot_wait_read();
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if (n)
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return n;
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x += xfer;
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len -= xfer;
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}
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return 0;
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}
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int omap4_usbboot_write(void *data, unsigned len)
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{
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omap4_usbboot_queue_write(data, len);
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return omap4_usbboot_wait_write();
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}
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void omap4_usbboot_close(void)
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{
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omap4_usbboot_data.io->close(&omap4_usbboot_data.dread);
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}
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void omap4_usbboot_puts(const char *s)
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{
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u32 c;
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while ((c = *s++))
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omap4_usbboot_write(&c, 4);
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}
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