upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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116 lines
3.8 KiB
116 lines
3.8 KiB
/*
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* (C) Copyright 2012 Stephen Warren
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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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#include <common.h>
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#include <lcd.h>
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#include <asm/arch/mbox.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* Global variables that lcd.c expects to exist */
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vidinfo_t panel_info;
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struct msg_query {
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struct bcm2835_mbox_hdr hdr;
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struct bcm2835_mbox_tag_physical_w_h physical_w_h;
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u32 end_tag;
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};
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struct msg_setup {
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struct bcm2835_mbox_hdr hdr;
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struct bcm2835_mbox_tag_physical_w_h physical_w_h;
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struct bcm2835_mbox_tag_virtual_w_h virtual_w_h;
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struct bcm2835_mbox_tag_depth depth;
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struct bcm2835_mbox_tag_pixel_order pixel_order;
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struct bcm2835_mbox_tag_alpha_mode alpha_mode;
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struct bcm2835_mbox_tag_virtual_offset virtual_offset;
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struct bcm2835_mbox_tag_overscan overscan;
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struct bcm2835_mbox_tag_allocate_buffer allocate_buffer;
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u32 end_tag;
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};
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void lcd_ctrl_init(void *lcdbase)
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{
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ALLOC_ALIGN_BUFFER(struct msg_query, msg_query, 1, 16);
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ALLOC_ALIGN_BUFFER(struct msg_setup, msg_setup, 1, 16);
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int ret;
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u32 w, h;
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debug("bcm2835: Query resolution...\n");
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BCM2835_MBOX_INIT_HDR(msg_query);
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BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
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GET_PHYSICAL_W_H);
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ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
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if (ret) {
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printf("bcm2835: Could not query display resolution\n");
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/* FIXME: How to disable the LCD to prevent errors? hang()? */
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return;
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}
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w = msg_query->physical_w_h.body.resp.width;
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h = msg_query->physical_w_h.body.resp.height;
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debug("bcm2835: Setting up display for %d x %d\n", w, h);
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BCM2835_MBOX_INIT_HDR(msg_setup);
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BCM2835_MBOX_INIT_TAG(&msg_setup->physical_w_h, SET_PHYSICAL_W_H);
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msg_setup->physical_w_h.body.req.width = w;
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msg_setup->physical_w_h.body.req.height = h;
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BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_w_h, SET_VIRTUAL_W_H);
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msg_setup->virtual_w_h.body.req.width = w;
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msg_setup->virtual_w_h.body.req.height = h;
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BCM2835_MBOX_INIT_TAG(&msg_setup->depth, SET_DEPTH);
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msg_setup->depth.body.req.bpp = 16;
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BCM2835_MBOX_INIT_TAG(&msg_setup->pixel_order, SET_PIXEL_ORDER);
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msg_setup->pixel_order.body.req.order = BCM2835_MBOX_PIXEL_ORDER_BGR;
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BCM2835_MBOX_INIT_TAG(&msg_setup->alpha_mode, SET_ALPHA_MODE);
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msg_setup->alpha_mode.body.req.alpha = BCM2835_MBOX_ALPHA_MODE_IGNORED;
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BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_offset, SET_VIRTUAL_OFFSET);
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msg_setup->virtual_offset.body.req.x = 0;
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msg_setup->virtual_offset.body.req.y = 0;
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BCM2835_MBOX_INIT_TAG(&msg_setup->overscan, SET_OVERSCAN);
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msg_setup->overscan.body.req.top = 0;
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msg_setup->overscan.body.req.bottom = 0;
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msg_setup->overscan.body.req.left = 0;
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msg_setup->overscan.body.req.right = 0;
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BCM2835_MBOX_INIT_TAG(&msg_setup->allocate_buffer, ALLOCATE_BUFFER);
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msg_setup->allocate_buffer.body.req.alignment = 0x100;
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ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_setup->hdr);
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if (ret) {
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printf("bcm2835: Could not configure display\n");
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/* FIXME: How to disable the LCD to prevent errors? hang()? */
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return;
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}
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w = msg_setup->physical_w_h.body.resp.width;
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h = msg_setup->physical_w_h.body.resp.height;
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debug("bcm2835: Final resolution is %d x %d\n", w, h);
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panel_info.vl_col = w;
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panel_info.vl_row = h;
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panel_info.vl_bpix = LCD_COLOR16;
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gd->fb_base = msg_setup->allocate_buffer.body.resp.fb_address;
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}
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void lcd_enable(void)
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{
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}
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