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1ee2c6dbdf
When libpayload header files are included in the payload itself, it's possible that the payloads config settings will conflict with the ones in libpayload. It's also possible for the libpayload config settings to conflict with the payloads. To avoid that, the libpayload config settings have _LP_ (for libpayload) added to them. The symbols themselves as defined in the Config.in files are still the same, but the prefix added to them is now CONFIG_LP_ instead of just CONFIG_. Change-Id: Ib8a46d202e7880afdeac7924d69a949bfbcc5f97 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://gerrit.chromium.org/gerrit/65303 Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 23e866da20862cace0ed2a67d6fb74056bc9ea9a) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6427 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Marc Jones <marc.jones@se-eng.com>
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2012 secunet Security Networks AG
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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 <libpayload.h>
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#ifdef CONFIG_LP_STORAGE_AHCI
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# include <storage/ahci.h>
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#endif
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#include <storage/storage.h>
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static storage_dev_t **devices = NULL;
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static size_t devices_length = 0;
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static size_t dev_count = 0;
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int storage_attach_device(storage_dev_t *const dev)
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{
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if (dev_count == devices_length) {
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const size_t new_len =
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(0 == devices_length) ? 4 : devices_length << 1;
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storage_dev_t **const new_devices =
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realloc(devices, new_len * sizeof(storage_dev_t *));
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if (!new_devices)
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return -1;
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devices = new_devices;
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memset(devices + devices_length, '\0',
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(new_len - devices_length) * sizeof(storage_dev_t *));
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devices_length = new_len;
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}
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devices[dev_count++] = dev;
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return 0;
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}
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int storage_device_count(void)
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{
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return dev_count;
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}
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/**
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* Probe for drive with given number
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*
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* Looks for a drive with number dev_num and polls for a medium
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* in the drive if appropriate.
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*
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* @dev_num device number counted from 0
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*/
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storage_poll_t storage_probe(const size_t dev_num)
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{
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if (dev_num >= dev_count)
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return POLL_NO_DEVICE;
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else if (devices[dev_num]->poll)
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return devices[dev_num]->poll(devices[dev_num]);
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else
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return POLL_MEDIUM_PRESENT;
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}
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/**
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* Read 512-byte blocks
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*
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* Reads count blocks of 512 bytes from block start of drive dev_num
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* into buf.
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*
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* @dev_num device number counted from 0
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* @start number of first block to read from
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* @count number of blocks to read
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* @buf buffer where the read data should be written
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*/
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ssize_t storage_read_blocks512(const size_t dev_num,
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const lba_t start, const size_t count,
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unsigned char *const buf)
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{
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if ((dev_num < dev_count) && devices[dev_num]->read_blocks512)
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return devices[dev_num]->read_blocks512(
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devices[dev_num], start, count, buf);
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else
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return -1;
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}
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/**
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* Initializes storage controllers
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*
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* This function should be called once at startup to bring up supported
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* storage controllers.
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*/
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void storage_initialize(void)
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{
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#ifdef CONFIG_LP_STORAGE_AHCI
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ahci_initialize();
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#endif
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}
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