--- /dev/null
+// 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 <log.h>
+#include <upl.h>
+#include <dm/ofnode.h>
+#include "upl_common.h"
+
+/**
+ * read_addr() - Read an address
+ *
+ * Reads an address in the correct format, either 32- or 64-bit
+ *
+ * @upl: UPL state
+ * @node: Node to read from
+ * @prop: Property name to read
+ * @addr: Place to put the address
+ * Return: 0 if OK, -ve on error
+ */
+static int read_addr(const struct upl *upl, ofnode node, const char *prop,
+ ulong *addrp)
+{
+ int ret;
+
+ if (upl->addr_cells == 1) {
+ u32 val;
+
+ ret = ofnode_read_u32(node, prop, &val);
+ if (!ret)
+ *addrp = val;
+ } else {
+ u64 val;
+
+ ret = ofnode_read_u64(node, prop, &val);
+ if (!ret)
+ *addrp = val;
+ }
+
+ return ret;
+}
+
+/**
+ * read_size() - Read a size
+ *
+ * Reads a size in the correct format, either 32- or 64-bit
+ *
+ * @upl: UPL state
+ * @node: Node to read from
+ * @prop: Property name to read
+ * @addr: Place to put the size
+ * Return: 0 if OK, -ve on error
+ */
+static int read_size(const struct upl *upl, ofnode node, const char *prop,
+ ulong *sizep)
+{
+ int ret;
+
+ if (upl->size_cells == 1) {
+ u32 val;
+
+ ret = ofnode_read_u32(node, prop, &val);
+ if (!ret)
+ *sizep = val;
+ } else {
+ u64 val;
+
+ ret = ofnode_read_u64(node, prop, &val);
+ if (!ret)
+ *sizep = val;
+ }
+
+ return ret;
+}
+
+/**
+ * ofnode_read_bitmask() - Read a bit mask from a string list
+ *
+ * @node: Node to read from
+ * @prop: Property name to read
+ * @names: Array of names for each bit
+ * @count: Number of array entries
+ * @value: Returns resulting bit-mask value on success
+ * Return: 0 if OK, -EINVAL if a bit number is not defined, -ENOSPC if the
+ * string is too long for the (internal) buffer, -EINVAL if no such property
+ */
+static int ofnode_read_bitmask(ofnode node, const char *prop,
+ const char *const names[], uint count,
+ uint *valuep)
+{
+ const char **list;
+ const char **strp;
+ uint val;
+ uint bit;
+ int ret;
+
+ ret = ofnode_read_string_list(node, prop, &list);
+ if (ret < 0)
+ return log_msg_ret("rea", ret);
+
+ val = 0;
+ for (strp = list; *strp; strp++) {
+ const char *str = *strp;
+ bool found = false;
+
+ for (bit = 0; bit < count; bit++) {
+ if (!strcmp(str, names[bit])) {
+ found = true;
+ break;
+ }
+ }
+ if (found)
+ val |= BIT(bit);
+ else
+ log_warning("%s/%s: Invalid value '%s'\n",
+ ofnode_get_name(node), prop, str);
+ }
+ *valuep = val;
+
+ return 0;
+}
+
+/**
+ * ofnode_read_value() - Read a string value as an int using a lookup
+ *
+ * @node: Node to read from
+ * @prop: Property name to read
+ * @names: Array of names for each int value
+ * @count: Number of array entries
+ * @valuep: Returns int value read
+ * Return: 0 if OK, -EINVAL if a bit number is not defined, -ENOENT if the
+ * property does not exist
+ */
+static int ofnode_read_value(ofnode node, const char *prop,
+ const char *const names[], uint count,
+ uint *valuep)
+{
+ const char *str;
+ int i;
+
+ str = ofnode_read_string(node, prop);
+ if (!str)
+ return log_msg_ret("rd", -ENOENT);
+
+ for (i = 0; i < count; i++) {
+ if (!strcmp(names[i], str)) {
+ *valuep = i;
+ return 0;
+ }
+ }
+
+ log_debug("Unnamed value '%s'\n", str);
+ return log_msg_ret("val", -EINVAL);
+}
+
+static int read_uint(ofnode node, const char *prop, uint *valp)
+{
+ u32 val;
+ int ret;
+
+ ret = ofnode_read_u32(node, prop, &val);
+ if (ret)
+ return ret;
+ *valp = val;
+
+ return 0;
+}
+
+/**
+ * decode_root_props() - Decode root properties from the tree
+ *
+ * @upl: UPL state
+ * @node: Node to decode
+ * Return 0 if OK, -ve on error
+ */
+static int decode_root_props(struct upl *upl, ofnode node)
+{
+ int ret;
+
+ ret = read_uint(node, UPLP_ADDRESS_CELLS, &upl->addr_cells);
+ if (!ret)
+ ret = read_uint(node, UPLP_SIZE_CELLS, &upl->size_cells);
+ if (ret)
+ return log_msg_ret("cel", ret);
+
+ return 0;
+}
+
+/**
+ * decode_root_props() - Decode UPL parameters from the tree
+ *
+ * @upl: UPL state
+ * @node: Node to decode
+ * Return 0 if OK, -ve on error
+ */
+static int decode_upl_params(struct upl *upl, ofnode options)
+{
+ ofnode node;
+ int ret;
+
+ node = ofnode_find_subnode(options, UPLN_UPL_PARAMS);
+ if (!ofnode_valid(node))
+ return log_msg_ret("par", -EINVAL);
+ log_debug("decoding '%s'\n", ofnode_get_name(node));
+
+ ret = read_addr(upl, node, UPLP_SMBIOS, &upl->smbios);
+ if (ret)
+ return log_msg_ret("smb", ret);
+ ret = read_addr(upl, node, UPLP_ACPI, &upl->acpi);
+ if (ret)
+ return log_msg_ret("acp", ret);
+ ret = ofnode_read_bitmask(node, UPLP_BOOTMODE, bootmode_names,
+ UPLBM_COUNT, &upl->bootmode);
+ if (ret)
+ return log_msg_ret("boo", ret);
+ ret = read_uint(node, UPLP_ADDR_WIDTH, &upl->addr_width);
+ if (ret)
+ return log_msg_ret("add", ret);
+ ret = read_uint(node, UPLP_ACPI_NVS_SIZE, &upl->acpi_nvs_size);
+ if (ret)
+ return log_msg_ret("nvs", ret);
+
+ return 0;
+}
+
+/**
+ * decode_upl_images() - Decode /options/upl-image nodes
+ *
+ * @node: /options node in which to look for the node
+ * Return 0 if OK, -ve on error
+ */
+static int decode_upl_images(struct upl *upl, ofnode options)
+{
+ ofnode node, images;
+ int ret;
+
+ images = ofnode_find_subnode(options, UPLN_UPL_IMAGE);
+ if (!ofnode_valid(images))
+ return log_msg_ret("img", -EINVAL);
+ log_debug("decoding '%s'\n", ofnode_get_name(images));
+
+ ret = read_addr(upl, images, UPLP_FIT, &upl->fit);
+ if (!ret)
+ ret = read_uint(images, UPLP_CONF_OFFSET, &upl->conf_offset);
+ if (ret)
+ return log_msg_ret("cnf", ret);
+
+ ofnode_for_each_subnode(node, images) {
+ struct upl_image img;
+
+ ret = read_addr(upl, node, UPLP_LOAD, &img.load);
+ if (!ret)
+ ret = read_size(upl, node, UPLP_SIZE, &img.size);
+ if (!ret)
+ ret = read_uint(node, UPLP_OFFSET, &img.offset);
+ img.description = ofnode_read_string(node, UPLP_DESCRIPTION);
+ if (!img.description)
+ return log_msg_ret("sim", ret);
+ if (!alist_add(&upl->image, img))
+ return log_msg_ret("img", -ENOMEM);
+ }
+
+ return 0;
+}
+
+/**
+ * decode_addr_size() - Decide a set of addr/size pairs
+ *
+ * Each base/size value from the devicetree is written to the region list
+ *
+ * @upl: UPL state
+ * @buf: Bytes to decode
+ * @size: Number of bytes to decode
+ * @regions: List of regions to process (struct memregion)
+ * Returns: number of regions found, if OK, else -ve on error
+ */
+static int decode_addr_size(const struct upl *upl, const char *buf, int size,
+ struct alist *regions)
+{
+ const char *ptr, *end = buf + size;
+ int i;
+
+ alist_init_struct(regions, struct memregion);
+ ptr = buf;
+ for (i = 0; ptr < end; i++) {
+ struct memregion reg;
+
+ if (upl->addr_cells == 1)
+ reg.base = fdt32_to_cpu(*(u32 *)ptr);
+ else
+ reg.base = fdt64_to_cpu(*(u64 *)ptr);
+ ptr += upl->addr_cells * sizeof(u32);
+
+ if (upl->size_cells == 1)
+ reg.size = fdt32_to_cpu(*(u32 *)ptr);
+ else
+ reg.size = fdt64_to_cpu(*(u64 *)ptr);
+ ptr += upl->size_cells * sizeof(u32);
+ if (ptr > end)
+ return -ENOSPC;
+
+ if (!alist_add(regions, reg))
+ return log_msg_ret("reg", -ENOMEM);
+ }
+
+ return i;
+}
+
+/**
+ * node_matches_at() - Check if a node name matches "base@..."
+ *
+ * Return: true if the node name matches the base string followed by an @ sign;
+ * false otherwise
+ */
+static bool node_matches_at(ofnode node, const char *base)
+{
+ const char *name = ofnode_get_name(node);
+ int len = strlen(base);
+
+ return !strncmp(base, name, len) && name[len] == '@';
+}
+
+/**
+ * decode_upl_memory_node() - Decode a /memory node from the tree
+ *
+ * @upl: UPL state
+ * @node: Node to decode
+ * Return 0 if OK, -ve on error
+ */
+static int decode_upl_memory_node(struct upl *upl, ofnode node)
+{
+ struct upl_mem mem;
+ const char *buf;
+ int size, len;
+
+ buf = ofnode_read_prop(node, UPLP_REG, &size);
+ if (!buf) {
+ log_warning("Node '%s': Missing '%s' property\n",
+ ofnode_get_name(node), UPLP_REG);
+ return log_msg_ret("reg", -EINVAL);
+ }
+ len = decode_addr_size(upl, buf, size, &mem.region);
+ if (len < 0)
+ return log_msg_ret("buf", len);
+ mem.hotpluggable = ofnode_read_bool(node, UPLP_HOTPLUGGABLE);
+ if (!alist_add(&upl->mem, mem))
+ return log_msg_ret("mem", -ENOMEM);
+
+ return 0;
+}
+
+/**
+ * decode_upl_memmap() - Decode memory-map nodes from the tree
+ *
+ * @upl: UPL state
+ * @root: Parent node containing the /memory-map nodes
+ * Return 0 if OK, -ve on error
+ */
+static int decode_upl_memmap(struct upl *upl, ofnode root)
+{
+ ofnode node;
+
+ ofnode_for_each_subnode(node, root) {
+ struct upl_memmap memmap;
+ int size, len, ret;
+ const char *buf;
+
+ memmap.name = ofnode_get_name(node);
+ memmap.usage = 0;
+
+ buf = ofnode_read_prop(node, UPLP_REG, &size);
+ if (!buf) {
+ log_warning("Node '%s': Missing '%s' property\n",
+ ofnode_get_name(node), UPLP_REG);
+ continue;
+ }
+
+ len = decode_addr_size(upl, buf, size, &memmap.region);
+ if (len < 0)
+ return log_msg_ret("buf", len);
+ ret = ofnode_read_bitmask(node, UPLP_USAGE, usage_names,
+ UPLUS_COUNT, &memmap.usage);
+ if (ret && ret != -EINVAL) /* optional property */
+ return log_msg_ret("bit", ret);
+
+ if (!alist_add(&upl->memmap, memmap))
+ return log_msg_ret("mmp", -ENOMEM);
+ }
+
+ return 0;
+}
+
+/**
+ * decode_upl_memres() - Decode reserved-memory nodes from the tree
+ *
+ * @upl: UPL state
+ * @root: Parent node containing the reserved-memory nodes
+ * Return 0 if OK, -ve on error
+ */
+static int decode_upl_memres(struct upl *upl, ofnode root)
+{
+ ofnode node;
+
+ ofnode_for_each_subnode(node, root) {
+ struct upl_memres memres;
+ const char *buf;
+ int size, len;
+
+ log_debug("decoding '%s'\n", ofnode_get_name(node));
+ memres.name = ofnode_get_name(node);
+
+ buf = ofnode_read_prop(node, UPLP_REG, &size);
+ if (!buf) {
+ log_warning("Node '%s': Missing 'reg' property\n",
+ ofnode_get_name(node));
+ continue;
+ }
+
+ len = decode_addr_size(upl, buf, size, &memres.region);
+ if (len < 0)
+ return log_msg_ret("buf", len);
+ memres.no_map = ofnode_read_bool(node, UPLP_NO_MAP);
+
+ if (!alist_add(&upl->memres, memres))
+ return log_msg_ret("mre", -ENOMEM);
+ }
+
+ return 0;
+}
+
+/**
+ * decode_upl_serial() - Decode the serial node
+ *
+ * @upl: UPL state
+ * @root: Parent node contain node
+ * Return 0 if OK, -ve on error
+ */
+static int decode_upl_serial(struct upl *upl, ofnode node)
+{
+ struct upl_serial *ser = &upl->serial;
+ const char *buf;
+ int len, size;
+ int ret;
+
+ ser->compatible = ofnode_read_string(node, UPLP_COMPATIBLE);
+ if (!ser->compatible) {
+ log_warning("Node '%s': Missing compatible string\n",
+ ofnode_get_name(node));
+ return log_msg_ret("com", -EINVAL);
+ }
+ ret = read_uint(node, UPLP_CLOCK_FREQUENCY, &ser->clock_frequency);
+ if (!ret)
+ ret = read_uint(node, UPLP_CURRENT_SPEED, &ser->current_speed);
+ if (ret)
+ return log_msg_ret("spe", ret);
+
+ buf = ofnode_read_prop(node, UPLP_REG, &size);
+ if (!buf) {
+ log_warning("Node '%s': Missing 'reg' property\n",
+ ofnode_get_name(node));
+ return log_msg_ret("reg", -EINVAL);
+ }
+
+ len = decode_addr_size(upl, buf, sizeof(buf), &ser->reg);
+ if (len < 0)
+ return log_msg_ret("buf", len);
+
+ /* set defaults */
+ ser->reg_io_shift = UPLD_REG_IO_SHIFT;
+ ser->reg_offset = UPLD_REG_OFFSET;
+ ser->reg_io_width = UPLD_REG_IO_WIDTH;
+ read_uint(node, UPLP_REG_IO_SHIFT, &ser->reg_io_shift);
+ read_uint(node, UPLP_REG_OFFSET, &ser->reg_offset);
+ read_uint(node, UPLP_REG_IO_WIDTH, &ser->reg_io_width);
+ read_addr(upl, node, UPLP_VIRTUAL_REG, &ser->virtual_reg);
+ ret = ofnode_read_value(node, UPLP_ACCESS_TYPE, access_types,
+ ARRAY_SIZE(access_types), &ser->access_type);
+ if (ret && ret != -ENOENT)
+ return log_msg_ret("ser", ret);
+
+ return 0;
+}
+
+/**
+ * decode_upl_graphics() - Decode graphics node
+ *
+ * @upl: UPL state
+ * @root: Node to decode
+ * Return 0 if OK, -ve on error
+ */
+static int decode_upl_graphics(struct upl *upl, ofnode node)
+{
+ struct upl_graphics *gra = &upl->graphics;
+ const char *buf, *compat;
+ int len, size;
+ int ret;
+
+ compat = ofnode_read_string(node, UPLP_COMPATIBLE);
+ if (!compat) {
+ log_warning("Node '%s': Missing compatible string\n",
+ ofnode_get_name(node));
+ return log_msg_ret("com", -EINVAL);
+ }
+ if (strcmp(UPLC_GRAPHICS, compat)) {
+ log_warning("Node '%s': Ignoring compatible '%s'\n",
+ ofnode_get_name(node), compat);
+ return 0;
+ }
+
+ buf = ofnode_read_prop(node, UPLP_REG, &size);
+ if (!buf) {
+ log_warning("Node '%s': Missing 'reg' property\n",
+ ofnode_get_name(node));
+ return log_msg_ret("reg", -EINVAL);
+ }
+
+ len = decode_addr_size(upl, buf, sizeof(buf), &gra->reg);
+ if (len < 0)
+ return log_msg_ret("buf", len);
+
+ ret = read_uint(node, UPLP_WIDTH, &gra->width);
+ if (!ret)
+ ret = read_uint(node, UPLP_HEIGHT, &gra->height);
+ if (!ret)
+ ret = read_uint(node, UPLP_STRIDE, &gra->stride);
+ if (!ret) {
+ ret = ofnode_read_value(node, UPLP_GRAPHICS_FORMAT,
+ graphics_formats,
+ ARRAY_SIZE(graphics_formats),
+ &gra->format);
+ }
+ if (ret)
+ return log_msg_ret("pro", ret);
+
+ return 0;
+}
+
+int upl_read_handoff(struct upl *upl, oftree tree)
+{
+ ofnode root, node;
+ int ret;
+
+ if (!oftree_valid(tree))
+ return log_msg_ret("tre", -EINVAL);
+
+ root = oftree_root(tree);
+
+ upl_init(upl);
+ ret = decode_root_props(upl, root);
+ if (ret)
+ return log_msg_ret("roo", ret);
+
+ ofnode_for_each_subnode(node, root) {
+ const char *name = ofnode_get_name(node);
+
+ log_debug("decoding '%s'\n", name);
+ if (!strcmp(UPLN_OPTIONS, name)) {
+ ret = decode_upl_params(upl, node);
+ if (ret)
+ return log_msg_ret("opt", ret);
+
+ ret = decode_upl_images(upl, node);
+ } else if (node_matches_at(node, UPLN_MEMORY)) {
+ ret = decode_upl_memory_node(upl, node);
+ } else if (!strcmp(UPLN_MEMORY_MAP, name)) {
+ ret = decode_upl_memmap(upl, node);
+ } else if (!strcmp(UPLN_MEMORY_RESERVED, name)) {
+ ret = decode_upl_memres(upl, node);
+ } else if (node_matches_at(node, UPLN_SERIAL)) {
+ ret = decode_upl_serial(upl, node);
+ } else if (node_matches_at(node, UPLN_GRAPHICS)) {
+ ret = decode_upl_graphics(upl, node);
+ } else {
+ log_debug("Unknown node '%s'\n", name);
+ ret = 0;
+ }
+ if (ret)
+ return log_msg_ret("err", ret);
+ }
+
+ return 0;
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * UPL handoff generation
+ *
+ * Copyright 2024 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#ifndef __UPL_WRITE_H
+#define __UPL_WRITE_H
+
+#ifndef USE_HOSTCC
+
+#include <alist.h>
+#include <image.h>
+#include <dm/ofnode_decl.h>
+
+struct unit_test_state;
+
+#define UPLP_ADDRESS_CELLS "#address-cells"
+#define UPLP_SIZE_CELLS "#size-cells"
+
+#define UPLN_OPTIONS "options"
+#define UPLN_UPL_PARAMS "upl-params"
+#define UPLP_SMBIOS "smbios"
+#define UPLP_ACPI "acpi"
+#define UPLP_BOOTMODE "bootmode"
+#define UPLP_ADDR_WIDTH "addr-width"
+#define UPLP_ACPI_NVS_SIZE "acpi-nvs-size"
+
+#define UPLPATH_UPL_IMAGE "/options/upl-image"
+#define UPLN_UPL_IMAGE "upl-image"
+#define UPLN_IMAGE "image"
+#define UPLP_FIT "fit"
+#define UPLP_CONF_OFFSET "conf-offset"
+#define UPLP_LOAD "load"
+#define UPLP_SIZE "size"
+#define UPLP_OFFSET "offset"
+#define UPLP_DESCRIPTION "description"
+
+#define UPLN_MEMORY "memory"
+#define UPLP_HOTPLUGGABLE "hotpluggable"
+
+#define UPLPATH_MEMORY_MAP "/memory-map"
+#define UPLN_MEMORY_MAP "memory-map"
+#define UPLP_USAGE "usage"
+
+#define UPLN_MEMORY_RESERVED "reserved-memory"
+#define UPLPATH_MEMORY_RESERVED "/reserved-memory"
+#define UPLP_NO_MAP "no-map"
+
+#define UPLN_SERIAL "serial"
+#define UPLP_REG "reg"
+#define UPLP_COMPATIBLE "compatible"
+#define UPLP_CLOCK_FREQUENCY "clock-frequency"
+#define UPLP_CURRENT_SPEED "current-speed"
+#define UPLP_REG_IO_SHIFT "reg-io-shift"
+#define UPLP_REG_OFFSET "reg-offset"
+#define UPLP_REG_IO_WIDTH "reg-io-width"
+#define UPLP_VIRTUAL_REG "virtual-reg"
+#define UPLP_ACCESS_TYPE "access-type"
+
+#define UPLN_GRAPHICS "framebuffer"
+#define UPLC_GRAPHICS "simple-framebuffer"
+#define UPLP_WIDTH "width"
+#define UPLP_HEIGHT "height"
+#define UPLP_STRIDE "stride"
+#define UPLP_GRAPHICS_FORMAT "format"
+
+/**
+ * enum upl_boot_mode - Encodes the boot mode
+ *
+ * Each is a bit number from the boot_mode mask
+ */
+enum upl_boot_mode {
+ UPLBM_FULL,
+ UPLBM_MINIMAL,
+ UPLBM_FAST,
+ UPLBM_DIAG,
+ UPLBM_DEFAULT,
+ UPLBM_S2,
+ UPLBM_S3,
+ UPLBM_S4,
+ UPLBM_S5,
+ UPLBM_FACTORY,
+ UPLBM_FLASH,
+ UPLBM_RECOVERY,
+
+ UPLBM_COUNT,
+};
+
+/**
+ * struct upl_image - UPL image informaiton
+ *
+ * @load: Address image was loaded to
+ * @size: Size of image in bytes
+ * @offset: Offset of the image in the FIT (0=none)
+ * @desc: Description of the iamge (taken from the FIT)
+ */
+struct upl_image {
+ ulong load;
+ ulong size;
+ uint offset;
+ const char *description;
+};
+
+/**
+ * struct memregion - Information about a region of memory
+ *
+ * @base: Base address
+ * @size: Size in bytes
+ */
+struct memregion {
+ ulong base;
+ ulong size;
+};
+
+/**
+ * struct upl_mem - Information about physical-memory layout
+ *
+ * TODO: Figure out initial-mapped-area
+ *
+ * @region: Memory region list (struct memregion)
+ * @hotpluggable: true if hotpluggable
+ */
+struct upl_mem {
+ struct alist region;
+ bool hotpluggable;
+};
+
+/**
+ * enum upl_usage - Encodes the usage
+ *
+ * Each is a bit number from the usage mask
+ */
+enum upl_usage {
+ UPLUS_ACPI_RECLAIM,
+ UPLUS_ACPI_NVS,
+ UPLUS_BOOT_CODE,
+ UPLUS_BOOT_DATA,
+ UPLUS_RUNTIME_CODE,
+ UPLUS_RUNTIME_DATA,
+ UPLUS_COUNT
+};
+
+/**
+ * struct upl_memmap - Information about logical-memory layout
+ *
+ * @name: Node name to use
+ * @region: Memory region list (struct memregion)
+ * @usage: Memory-usage mask (enum upl_usage)
+ */
+struct upl_memmap {
+ const char *name;
+ struct alist region;
+ uint usage;
+};
+
+/**
+ * struct upl_memres - Reserved memory
+ *
+ * @name: Node name to use
+ * @region: Reserved memory region list (struct memregion)
+ * @no_map: true to indicate that a virtual mapping must not be created
+ */
+struct upl_memres {
+ const char *name;
+ struct alist region;
+ bool no_map;
+};
+
+enum upl_serial_access_type {
+ UPLSAT_MMIO,
+ UPLSAT_IO,
+};
+
+/* serial defaults */
+enum {
+ UPLD_REG_IO_SHIFT = 0,
+ UPLD_REG_OFFSET = 0,
+ UPLD_REG_IO_WIDTH = 1,
+};
+
+/**
+ * enum upl_access_type - Access types
+ *
+ * @UPLAT_MMIO: Memory-mapped I/O
+ * @UPLAT_IO: Separate I/O
+ */
+enum upl_access_type {
+ UPLAT_MMIO,
+ UPLAT_IO,
+};
+
+/**
+ * struct upl_serial - Serial console
+ *
+ * @compatible: Compatible string (NULL if there is no serial console)
+ * @clock_frequency: Input clock frequency of UART
+ * @current_speed: Current baud rate of UART
+ * @reg: List of base address and size of registers (struct memregion)
+ * @reg_shift_log2: log2 of distance between each register
+ * @reg_offset: Offset of registers from the base address
+ * @reg_width: Register width in bytes
+ * @virtual_reg: Virtual register access (0 for none)
+ * @access_type: Register access type to use
+ */
+struct upl_serial {
+ const char *compatible;
+ uint clock_frequency;
+ uint current_speed;
+ struct alist reg;
+ uint reg_io_shift;
+ uint reg_offset;
+ uint reg_io_width;
+ ulong virtual_reg;
+ enum upl_serial_access_type access_type;
+};
+
+/**
+ * enum upl_graphics_format - Graphics formats
+ *
+ * @UPLGF_ARGB32: 32bpp format using 0xaarrggbb
+ * @UPLGF_ABGR32: 32bpp format using 0xaabbggrr
+ * @UPLGF_ARGB64: 64bpp format using 0xaaaabbbbggggrrrr
+ */
+enum upl_graphics_format {
+ UPLGF_ARGB32,
+ UPLGF_ABGR32,
+ UPLGF_ABGR64,
+};
+
+/**
+ * @reg: List of base address and size of registers (struct memregion)
+ * @width: Width of display in pixels
+ * @height: Height of display in pixels
+ * @stride: Number of bytes from one line to the next
+ * @format: Pixel format
+ */
+struct upl_graphics {
+ struct alist reg;
+ uint width;
+ uint height;
+ uint stride;
+ enum upl_graphics_format format;
+};
+
+/*
+ * Information about the UPL state
+ *
+ * @addr_cells: Number of address cells used in the handoff
+ * @size_cells: Number of size cells used in the handoff
+ * @bootmode: Boot-mode mask (enum upl_boot_mode)
+ * @fit: Address of FIT image that was loaded
+ * @conf_offset: Offset in FIT of the configuration that was selected
+ * @addr_width: Adress-bus width of machine, e.g. 46 for 46 bits
+ * @acpi_nvs_size: Size of the ACPI non-volatile-storage area in bytes
+ * @image: Information about each image (struct upl_image)
+ * @mem: Information about physical-memory regions (struct upl_mem)
+ * @nennap: Information about logical-memory regions (struct upl_memmap)
+ * @nennap: Information about reserved-memory regions (struct upl_memres)
+ */
+struct upl {
+ int addr_cells;
+ int size_cells;
+
+ ulong smbios;
+ ulong acpi;
+ uint bootmode;
+ ulong fit;
+ uint conf_offset;
+ uint addr_width;
+ uint acpi_nvs_size;
+
+ struct alist image;
+ struct alist mem;
+ struct alist memmap;
+ struct alist memres;
+ struct upl_serial serial;
+ struct upl_graphics graphics;
+};
+
+/**
+ * upl_write_handoff() - Write a Unversal Payload handoff structure
+ *
+ * upl: UPL state to write
+ * @root: root node to write it to
+ * @skip_existing: Avoid recreating any nodes which already exist in the
+ * devicetree. For example, if there is a serial node, just leave it alone,
+ * since don't need to create a new one
+ * Return: 0 on success, -ve on error
+ */
+int upl_write_handoff(const struct upl *upl, ofnode root, bool skip_existing);
+
+/**
+ * upl_create_handoff_tree() - Write a Unversal Payload handoff structure
+ *
+ * upl: UPL state to write
+ * @treep: Returns a new tree containing the handoff
+ * Return: 0 on success, -ve on error
+ */
+int upl_create_handoff_tree(const struct upl *upl, oftree *treep);
+
+/**
+ * upl_read_handoff() - Read a Unversal Payload handoff structure
+ *
+ * upl: UPL state to read into
+ * @tree: Devicetree containing the data to read
+ * Return: 0 on success, -ve on error
+ */
+int upl_read_handoff(struct upl *upl, oftree tree);
+#endif /* USE_HOSTCC */
+
+#if CONFIG_IS_ENABLED(UPL) && defined(CONFIG_SPL_BUILD)
+
+/**
+ * upl_set_fit_info() - Set up basic info about the FIT
+ *
+ * @fit: Address of FIT
+ * @conf_offset: Configuration node being used
+ * @entry_addr: Entry address for next phase
+ */
+void upl_set_fit_info(ulong fit, int conf_offset, ulong entry_addr);
+
+/**
+ * upl_set_fit_addr() - Set up the address of the FIT
+ *
+ * @fit: Address of FIT
+ */
+void upl_set_fit_addr(ulong fit);
+
+#else
+static inline void upl_set_fit_addr(ulong fit) {}
+static inline void upl_set_fit_info(ulong fit, int conf_offset,
+ ulong entry_addr) {}
+#endif /* UPL && SPL */
+
+/**
+ * _upl_add_image() - Internal function to add a new image to the UPL
+ *
+ * @node: Image node offset in FIT
+ * @load_addr: Address to which images was loaded
+ * @size: Image size in bytes
+ * @desc: Description of image
+ * Return: 0 if OK, -ENOMEM if out of memory
+ */
+int _upl_add_image(int node, ulong load_addr, ulong size, const char *desc);
+
+/**
+ * upl_add_image() - Add a new image to the UPL
+ *
+ * @fit: Pointer to FIT
+ * @node: Image node offset in FIT
+ * @load_addr: Address to which images was loaded
+ * @size: Image size in bytes
+ * Return: 0 if OK, -ENOMEM if out of memory
+ */
+static inline int upl_add_image(const void *fit, int node, ulong load_addr,
+ ulong size)
+{
+ if (CONFIG_IS_ENABLED(UPL) && IS_ENABLED(CONFIG_SPL_BUILD)) {
+ const char *desc = fdt_getprop(fit, node, FIT_DESC_PROP, NULL);
+
+ return _upl_add_image(node, load_addr, size, desc);
+ }
+
+ return 0;
+}
+
+/** upl_init() - Set up a UPL struct */
+void upl_init(struct upl *upl);
+
+#endif /* __UPL_WRITE_H */
projects / u-boot.git / commitdiff