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// SPDX-License-Identifier: GPL-2.0+
/*
* UPL handoff parsing
*
* Copyright 2024 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#define LOG_CATEGORY UCLASS_BOOTSTD
#include <alist.h>
#include <bloblist.h>
#include <dm.h>
#include <image.h>
#include <mapmem.h>
#include <serial.h>
#include <spl.h>
#include <upl.h>
#include <video.h>
#include <asm/global_data.h>
#include <dm/read.h>
#include <dm/uclass-internal.h>
DECLARE_GLOBAL_DATA_PTR;
struct upl s_upl;
void upl_set_fit_addr(ulong fit)
{
struct upl *upl = &s_upl;
upl->fit = fit;
}
void upl_set_fit_info(ulong fit, int conf_offset, ulong entry_addr)
{
struct upl *upl = &s_upl;
upl->fit = fit;
upl->conf_offset = conf_offset;
log_debug("upl: add fit %lx conf %x\n", fit, conf_offset);
}
int _upl_add_image(int node, ulong load_addr, ulong size, const char *desc)
{
struct upl *upl = &s_upl;
struct upl_image img;
img.load = load_addr;
img.size = size;
img.offset = node;
img.description = desc;
if (!alist_add(&upl->image, img))
return -ENOMEM;
log_debug("upl: add image %s at %lx size %lx\n", desc, load_addr, size);
return 0;
}
static int write_serial(struct upl_serial *ser)
{
struct udevice *dev = gd->cur_serial_dev;
struct serial_device_info info;
struct memregion region;
int ret;
if (!dev)
return log_msg_ret("ser", -ENOENT);
ret = serial_getinfo(dev, &info);
if (ret)
return log_msg_ret("inf", ret);
ser->compatible = ofnode_read_string(dev_ofnode(dev), "compatible");
ser->clock_frequency = info.clock;
ser->current_speed = gd->baudrate;
region.base = info.addr;
region.size = info.size;
alist_init_struct(&ser->reg, struct memregion);
if (!alist_add(&ser->reg, region))
return -ENOMEM;
ser->reg_io_shift = info.reg_shift;
ser->reg_offset = info.reg_offset;
ser->reg_io_width = info.reg_width;
ser->virtual_reg = 0;
ser->access_type = info.addr_space;
return 0;
}
static int write_graphics(struct upl_graphics *gra)
{
struct video_uc_plat *plat;
struct video_priv *priv;
struct memregion region;
struct udevice *dev;
alist_init_struct(&gra->reg, struct memregion);
uclass_find_first_device(UCLASS_VIDEO, &dev);
if (!dev || !device_active(dev))
return log_msg_ret("vid", -ENOENT);
plat = dev_get_uclass_plat(dev);
region.base = plat->base;
region.size = plat->size;
if (!alist_add(&gra->reg, region))
return log_msg_ret("reg", -ENOMEM);
priv = dev_get_uclass_priv(dev);
gra->width = priv->xsize;
gra->height = priv->ysize;
gra->stride = priv->line_length; /* private field */
switch (priv->format) {
case VIDEO_RGBA8888:
case VIDEO_X8R8G8B8:
gra->format = UPLGF_ARGB32;
break;
case VIDEO_X8B8G8R8:
gra->format = UPLGF_ABGR32;
break;
case VIDEO_X2R10G10B10:
log_debug("device '%s': VIDEO_X2R10G10B10 not supported\n",
dev->name);
return log_msg_ret("for", -EPROTO);
case VIDEO_UNKNOWN:
log_debug("device '%s': Unknown video format\n", dev->name);
return log_msg_ret("for", -EPROTO);
}
return 0;
}
int spl_write_upl_handoff(struct spl_image_info *spl_image)
{
struct upl *upl = &s_upl;
struct abuf buf;
ofnode root;
void *ptr;
int ret;
log_debug("UPL: Writing handoff - image_count=%d\n", upl->image.count);
upl->addr_cells = IS_ENABLED(CONFIG_PHYS_64BIT) ? 2 : 1;
upl->size_cells = IS_ENABLED(CONFIG_PHYS_64BIT) ? 2 : 1;
upl->bootmode = UPLBM_DEFAULT;
ret = write_serial(&upl->serial);
if (ret)
return log_msg_ret("ser", ret);
ret = write_graphics(&upl->graphics);
if (ret && ret != -ENOENT)
return log_msg_ret("gra", ret);
root = ofnode_root();
ret = upl_write_handoff(upl, root, true);
if (ret)
return log_msg_ret("wr", ret);
ret = oftree_to_fdt(oftree_default(), &buf);
if (ret)
return log_msg_ret("fdt", ret);
log_debug("FDT size %zx\n", abuf_size(&buf));
ptr = bloblist_add(BLOBLISTT_CONTROL_FDT, abuf_size(&buf), 0);
if (!ptr)
return log_msg_ret("blo", -ENOENT);
memcpy(ptr, abuf_data(&buf), abuf_size(&buf));
return 0;
}
void spl_upl_init(void)
{
upl_init(&s_upl);
}
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