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gerrit-public.fairphone.software / kernel / lk / 0f249e38ac48879b2de990032d3d454060b9641e / . / platform / msm_shared / dev_tree.c
blob: 40c24a4bc7c0bd29039e369148649ead90f21064 [file] [log] [blame]
/* Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <libfdt.h>
#include <dev_tree.h>
#include <lib/ptable.h>
#include <malloc.h>
#include <qpic_nand.h>
#include <stdlib.h>
#include <string.h>
#include <platform.h>
#include <board.h>
#include <list.h>
#include <kernel/thread.h>
#include <target.h>
#include <partial_goods.h>
struct dt_entry_v1
{
uint32_t platform_id;
uint32_t variant_id;
uint32_t soc_rev;
uint32_t offset;
uint32_t size;
};
static struct dt_mem_node_info mem_node;
static int platform_dt_absolute_match(struct dt_entry *cur_dt_entry, struct dt_entry_node *dt_list);
static struct dt_entry *platform_dt_match_best(struct dt_entry_node *dt_list);
static int update_dtb_entry_node(struct dt_entry_node *dt_list, uint32_t dtb_info);
extern int target_is_emmc_boot(void);
extern uint32_t target_dev_tree_mem(void *fdt, uint32_t memory_node_offset);
/* TODO: This function needs to be moved to target layer to check violations
* against all the other regions as well.
*/
extern int check_aboot_addr_range_overlap(uint32_t start, uint32_t size);
int fdt_check_header_ext(const void *fdt)
{
uintptr_t fdt_start, fdt_end;
fdt_start = (uintptr_t)fdt;
if(fdt_start + fdt_totalsize(fdt) < fdt_start)
{
dprintf(CRITICAL,"Integer over in fdt header %s\t%d",__func__,__LINE__);
return FDT_ERR_BADOFFSET;
}
fdt_end = fdt_start + fdt_totalsize(fdt);
if (((uint64_t)fdt_start + (uint64_t)fdt_off_dt_struct(fdt) + (uint64_t)fdt_size_dt_struct(fdt)) > UINT_MAX)
return FDT_ERR_BADOFFSET;
if ((fdt_start + fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt)) > fdt_end)
return FDT_ERR_BADOFFSET;
if (((uint64_t)fdt_start + (uint64_t)fdt_off_dt_strings(fdt) + (uint64_t)fdt_size_dt_strings(fdt)) > UINT_MAX)
return FDT_ERR_BADOFFSET;
if ((fdt_start + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)) > fdt_end)
return FDT_ERR_BADOFFSET;
return 0;
}
/* Returns soc version if platform id and hardware id matches
otherwise return 0xFFFFFFFF */
#define INVALID_SOC_REV_ID 0XFFFFFFFF
/* Add function to allocate dt entry list, used for recording
* the entry which conform to platform_dt_absolute_match()
*/
static struct dt_entry_node *dt_entry_list_init(void)
{
struct dt_entry_node *dt_node_member = NULL;
dt_node_member = (struct dt_entry_node *)
malloc(sizeof(struct dt_entry_node));
ASSERT(dt_node_member);
list_clear_node(&dt_node_member->node);
dt_node_member->dt_entry_m = (struct dt_entry *)
malloc(sizeof(struct dt_entry));
ASSERT(dt_node_member->dt_entry_m);
memset(dt_node_member->dt_entry_m ,0 ,sizeof(struct dt_entry));
return dt_node_member;
}
static void insert_dt_entry_in_queue(struct dt_entry_node *dt_list, struct dt_entry_node *dt_node_member)
{
list_add_tail(&dt_list->node, &dt_node_member->node);
}
static void dt_entry_list_delete(struct dt_entry_node *dt_node_member)
{
if (list_in_list(&dt_node_member->node)) {
list_delete(&dt_node_member->node);
free(dt_node_member->dt_entry_m);
free(dt_node_member);
}
}
static int dev_tree_compatible(void *dtb, uint32_t dtb_size, struct dt_entry_node *dtb_list)
{
int root_offset;
const void *prop = NULL;
const char *plat_prop = NULL;
const char *board_prop = NULL;
const char *pmic_prop = NULL;
char *model = NULL;
struct dt_entry *cur_dt_entry;
struct dt_entry *dt_entry_array = NULL;
struct board_id *board_data = NULL;
struct plat_id *platform_data = NULL;
struct pmic_id *pmic_data = NULL;
int len;
int len_board_id;
int len_plat_id;
int min_plat_id_len = 0;
int len_pmic_id;
uint32_t dtb_ver;
uint32_t num_entries = 0;
uint32_t i, j, k, n;
uint32_t msm_data_count;
uint32_t board_data_count;
uint32_t pmic_data_count;
root_offset = fdt_path_offset(dtb, "/");
if (root_offset < 0)
return false;
prop = fdt_getprop(dtb, root_offset, "model", &len);
if (prop && len > 0) {
model = (char *) malloc(sizeof(char) * len);
ASSERT(model);
strlcpy(model, prop, len);
} else {
dprintf(INFO, "model does not exist in device tree\n");
}
/* Find the pmic-id prop from DTB , if pmic-id is present then
* the DTB is version 3, otherwise find the board-id prop from DTB ,
* if board-id is present then the DTB is version 2 */
pmic_prop = (const char *)fdt_getprop(dtb, root_offset, "qcom,pmic-id", &len_pmic_id);
board_prop = (const char *)fdt_getprop(dtb, root_offset, "qcom,board-id", &len_board_id);
if (pmic_prop && (len_pmic_id > 0) && board_prop && (len_board_id > 0)) {
if ((len_pmic_id % PMIC_ID_SIZE) || (len_board_id % BOARD_ID_SIZE))
{
dprintf(CRITICAL, "qcom,pmic-id(%d) or qcom,board-id(%d) in device tree is not a multiple of (%d %d)\n",
len_pmic_id, len_board_id, PMIC_ID_SIZE, BOARD_ID_SIZE);
return false;
}
dtb_ver = DEV_TREE_VERSION_V3;
min_plat_id_len = PLAT_ID_SIZE;
} else if (board_prop && len_board_id > 0) {
if (len_board_id % BOARD_ID_SIZE)
{
dprintf(CRITICAL, "qcom,board-id in device tree is (%d) not a multiple of (%d)\n",
len_board_id, BOARD_ID_SIZE);
return false;
}
dtb_ver = DEV_TREE_VERSION_V2;
min_plat_id_len = PLAT_ID_SIZE;
} else {
dtb_ver = DEV_TREE_VERSION_V1;
min_plat_id_len = DT_ENTRY_V1_SIZE;
}
/* Get the msm-id prop from DTB */
plat_prop = (const char *)fdt_getprop(dtb, root_offset, "qcom,msm-id", &len_plat_id);
if (!plat_prop || len_plat_id <= 0) {
dprintf(INFO, "qcom,msm-id entry not found\n");
return false;
} else if (len_plat_id % min_plat_id_len) {
dprintf(INFO, "qcom,msm-id in device tree is (%d) not a multiple of (%d)\n",
len_plat_id, min_plat_id_len);
return false;
}
/*
* If DTB version is '1' look for <x y z> pair in the DTB
* x: platform_id
* y: variant_id
* z: SOC rev
*/
if (dtb_ver == DEV_TREE_VERSION_V1) {
cur_dt_entry = (struct dt_entry *)
malloc(sizeof(struct dt_entry));
if (!cur_dt_entry) {
dprintf(CRITICAL, "Out of memory\n");
return false;
}
memset(cur_dt_entry, 0, sizeof(struct dt_entry));
while (len_plat_id) {
cur_dt_entry->platform_id = fdt32_to_cpu(((const struct dt_entry_v1 *)plat_prop)->platform_id);
cur_dt_entry->variant_id = fdt32_to_cpu(((const struct dt_entry_v1 *)plat_prop)->variant_id);
cur_dt_entry->soc_rev = fdt32_to_cpu(((const struct dt_entry_v1 *)plat_prop)->soc_rev);
cur_dt_entry->board_hw_subtype =
fdt32_to_cpu(((const struct dt_entry_v1 *)plat_prop)->variant_id) >> 0x18;
cur_dt_entry->pmic_rev[0] = board_pmic_target(0);
cur_dt_entry->pmic_rev[1] = board_pmic_target(1);
cur_dt_entry->pmic_rev[2] = board_pmic_target(2);
cur_dt_entry->pmic_rev[3] = board_pmic_target(3);
cur_dt_entry->offset = (uint32_t)dtb;
cur_dt_entry->size = dtb_size;
dprintf(SPEW, "Found an appended flattened device tree (%s - %u %u 0x%x)\n",
*model ? model : "unknown",
cur_dt_entry->platform_id, cur_dt_entry->variant_id, cur_dt_entry->soc_rev);
if (platform_dt_absolute_match(cur_dt_entry, dtb_list)) {
dprintf(SPEW, "Device tree exact match the board: <%u %u 0x%x> != <%u %u 0x%x>\n",
cur_dt_entry->platform_id,
cur_dt_entry->variant_id,
cur_dt_entry->soc_rev,
board_platform_id(),
board_hardware_id(),
board_soc_version());
} else {
dprintf(SPEW, "Device tree's msm_id doesn't match the board: <%u %u 0x%x> != <%u %u 0x%x>\n",
cur_dt_entry->platform_id,
cur_dt_entry->variant_id,
cur_dt_entry->soc_rev,
board_platform_id(),
board_hardware_id(),
board_soc_version());
plat_prop += DT_ENTRY_V1_SIZE;
len_plat_id -= DT_ENTRY_V1_SIZE;
continue;
}
}
free(cur_dt_entry);
}
/*
* If DTB Version is '3' then we have split DTB with board & msm data & pmic
* populated saperately in board-id & msm-id & pmic-id prop respectively.
* Extract the data & prepare a look up table
*/
else if (dtb_ver == DEV_TREE_VERSION_V2 || dtb_ver == DEV_TREE_VERSION_V3) {
board_data_count = (len_board_id / BOARD_ID_SIZE);
msm_data_count = (len_plat_id / PLAT_ID_SIZE);
/* If dtb version is v2.0, the pmic_data_count will be <= 0 */
pmic_data_count = (len_pmic_id / PMIC_ID_SIZE);
/* If we are using dtb v3.0, then we have split board, msm & pmic data in the DTB
* If we are using dtb v2.0, then we have split board & msmdata in the DTB
*/
board_data = (struct board_id *) malloc(sizeof(struct board_id) * (len_board_id / BOARD_ID_SIZE));
ASSERT(board_data);
platform_data = (struct plat_id *) malloc(sizeof(struct plat_id) * (len_plat_id / PLAT_ID_SIZE));
ASSERT(platform_data);
if (dtb_ver == DEV_TREE_VERSION_V3) {
pmic_data = (struct pmic_id *) malloc(sizeof(struct pmic_id) * (len_pmic_id / PMIC_ID_SIZE));
ASSERT(pmic_data);
}
i = 0;
/* Extract board data from DTB */
for(i = 0 ; i < board_data_count; i++) {
board_data[i].variant_id = fdt32_to_cpu(((struct board_id *)board_prop)->variant_id);
board_data[i].platform_subtype = fdt32_to_cpu(((struct board_id *)board_prop)->platform_subtype);
/* For V2/V3 version of DTBs we have platform version field as part
* of variant ID, in such case the subtype will be mentioned as 0x0
* As the qcom, board-id = <0xSSPMPmPH, 0x0>
* SS -- Subtype
* PM -- Platform major version
* Pm -- Platform minor version
* PH -- Platform hardware CDP/MTP
* In such case to make it compatible with LK algorithm move the subtype
* from variant_id to subtype field
*/
if (board_data[i].platform_subtype == 0)
board_data[i].platform_subtype =
fdt32_to_cpu(((struct board_id *)board_prop)->variant_id) >> 0x18;
len_board_id -= sizeof(struct board_id);
board_prop += sizeof(struct board_id);
}
/* Extract platform data from DTB */
for(i = 0 ; i < msm_data_count; i++) {
platform_data[i].platform_id = fdt32_to_cpu(((struct plat_id *)plat_prop)->platform_id);
platform_data[i].soc_rev = fdt32_to_cpu(((struct plat_id *)plat_prop)->soc_rev);
len_plat_id -= sizeof(struct plat_id);
plat_prop += sizeof(struct plat_id);
}
if (dtb_ver == DEV_TREE_VERSION_V3 && pmic_prop) {
/* Extract pmic data from DTB */
for(i = 0 ; i < pmic_data_count; i++) {
pmic_data[i].pmic_version[0]= fdt32_to_cpu(((struct pmic_id *)pmic_prop)->pmic_version[0]);
pmic_data[i].pmic_version[1]= fdt32_to_cpu(((struct pmic_id *)pmic_prop)->pmic_version[1]);
pmic_data[i].pmic_version[2]= fdt32_to_cpu(((struct pmic_id *)pmic_prop)->pmic_version[2]);
pmic_data[i].pmic_version[3]= fdt32_to_cpu(((struct pmic_id *)pmic_prop)->pmic_version[3]);
len_pmic_id -= sizeof(struct pmic_id);
pmic_prop += sizeof(struct pmic_id);
}
/* We need to merge board & platform data into dt entry structure */
num_entries = msm_data_count * board_data_count * pmic_data_count;
} else {
/* We need to merge board & platform data into dt entry structure */
num_entries = msm_data_count * board_data_count;
}
if ((((uint64_t)msm_data_count * (uint64_t)board_data_count * (uint64_t)pmic_data_count) !=
msm_data_count * board_data_count * pmic_data_count) ||
(((uint64_t)msm_data_count * (uint64_t)board_data_count) != msm_data_count * board_data_count)) {
free(board_data);
free(platform_data);
if (pmic_data)
free(pmic_data);
if (model)
free(model);
return false;
}
dt_entry_array = (struct dt_entry*) malloc(sizeof(struct dt_entry) * num_entries);
ASSERT(dt_entry_array);
/* If we have '<X>; <Y>; <Z>' as platform data & '<A>; <B>; <C>' as board data.
* Then dt entry should look like
* <X ,A >;<X, B>;<X, C>;
* <Y ,A >;<Y, B>;<Y, C>;
* <Z ,A >;<Z, B>;<Z, C>;
*/
i = 0;
k = 0;
n = 0;
for (i = 0; i < msm_data_count; i++) {
for (j = 0; j < board_data_count; j++) {
if (dtb_ver == DEV_TREE_VERSION_V3 && pmic_prop) {
for (n = 0; n < pmic_data_count; n++) {
dt_entry_array[k].platform_id = platform_data[i].platform_id;
dt_entry_array[k].soc_rev = platform_data[i].soc_rev;
dt_entry_array[k].variant_id = board_data[j].variant_id;
dt_entry_array[k].board_hw_subtype = board_data[j].platform_subtype;
dt_entry_array[k].pmic_rev[0]= pmic_data[n].pmic_version[0];
dt_entry_array[k].pmic_rev[1]= pmic_data[n].pmic_version[1];
dt_entry_array[k].pmic_rev[2]= pmic_data[n].pmic_version[2];
dt_entry_array[k].pmic_rev[3]= pmic_data[n].pmic_version[3];
dt_entry_array[k].offset = (uint32_t)dtb;
dt_entry_array[k].size = dtb_size;
k++;
}
} else {
dt_entry_array[k].platform_id = platform_data[i].platform_id;
dt_entry_array[k].soc_rev = platform_data[i].soc_rev;
dt_entry_array[k].variant_id = board_data[j].variant_id;
dt_entry_array[k].board_hw_subtype = board_data[j].platform_subtype;
dt_entry_array[k].pmic_rev[0]= board_pmic_target(0);
dt_entry_array[k].pmic_rev[1]= board_pmic_target(1);
dt_entry_array[k].pmic_rev[2]= board_pmic_target(2);
dt_entry_array[k].pmic_rev[3]= board_pmic_target(3);
dt_entry_array[k].offset = (uint32_t)dtb;
dt_entry_array[k].size = dtb_size;
k++;
}
}
}
for (i=0 ;i < num_entries; i++) {
dprintf(SPEW, "Found an appended flattened device tree (%s - %u %u %u 0x%x)\n",
*model ? model : "unknown",
dt_entry_array[i].platform_id, dt_entry_array[i].variant_id, dt_entry_array[i].board_hw_subtype, dt_entry_array[i].soc_rev);
if (platform_dt_absolute_match(&(dt_entry_array[i]), dtb_list)) {
dprintf(SPEW, "Device tree exact match the board: <%u %u %u 0x%x> == <%u %u %u 0x%x>\n",
dt_entry_array[i].platform_id,
dt_entry_array[i].variant_id,
dt_entry_array[i].soc_rev,
dt_entry_array[i].board_hw_subtype,
board_platform_id(),
board_hardware_id(),
board_hardware_subtype(),
board_soc_version());
} else {
dprintf(SPEW, "Device tree's msm_id doesn't match the board: <%u %u %u 0x%x> != <%u %u %u 0x%x>\n",
dt_entry_array[i].platform_id,
dt_entry_array[i].variant_id,
dt_entry_array[i].soc_rev,
dt_entry_array[i].board_hw_subtype,
board_platform_id(),
board_hardware_id(),
board_hardware_subtype(),
board_soc_version());
}
}
free(board_data);
free(platform_data);
if (pmic_data)
free(pmic_data);
free(dt_entry_array);
}
if (model)
free(model);
return true;
}
/*
* Will relocate the DTB to the tags addr if the device tree is found and return
* its address
*
* Arguments: kernel - Start address of the kernel loaded in RAM
* tags - Start address of the tags loaded in RAM
* kernel_size - Size of the kernel in bytes
*
* Return Value: DTB address : If appended device tree is found
* 'NULL' : Otherwise
*/
void *dev_tree_appended(void *kernel, uint32_t kernel_size, uint32_t dtb_offset, void *tags)
{
uintptr_t kernel_end = (uintptr_t)kernel + kernel_size;
uint32_t app_dtb_offset = 0;
void *dtb = NULL;
void *bestmatch_tag = NULL;
struct dt_entry *best_match_dt_entry = NULL;
uint32_t bestmatch_tag_size;
struct dt_entry_node *dt_entry_queue = NULL;
struct dt_entry_node *dt_node_tmp1 = NULL;
struct dt_entry_node *dt_node_tmp2 = NULL;
/* Initialize the dtb entry node*/
dt_entry_queue = (struct dt_entry_node *)
malloc(sizeof(struct dt_entry_node));
if (!dt_entry_queue) {
dprintf(CRITICAL, "Out of memory\n");
return NULL;
}
list_initialize(&dt_entry_queue->node);
if (dtb_offset)
app_dtb_offset = dtb_offset;
else
memcpy((void*) &app_dtb_offset, (void*) (kernel + DTB_OFFSET), sizeof(uint32_t));
if (((uintptr_t)kernel + (uintptr_t)app_dtb_offset) < (uintptr_t)kernel) {
return NULL;
}
dtb = (void *)((uintptr_t)kernel + app_dtb_offset);
while (((uintptr_t)dtb + sizeof(struct fdt_header)) < (uintptr_t)kernel_end) {
struct fdt_header dtb_hdr;
uint32_t dtb_size;
/* the DTB could be unaligned, so extract the header,
* and operate on it separately */
memcpy(&dtb_hdr, dtb, sizeof(struct fdt_header));
if (fdt_check_header((const void *)&dtb_hdr) != 0 ||
fdt_check_header_ext((const void *)&dtb_hdr) != 0 ||
((uintptr_t)dtb + (uintptr_t)fdt_totalsize((const void *)&dtb_hdr) < (uintptr_t)dtb) ||
((uintptr_t)dtb + (uintptr_t)fdt_totalsize((const void *)&dtb_hdr) > (uintptr_t)kernel_end))
break;
dtb_size = fdt_totalsize(&dtb_hdr);
if (check_aboot_addr_range_overlap((uint32_t)tags, dtb_size)) {
dprintf(CRITICAL, "Tags addresses overlap with aboot addresses.\n");
return NULL;
}
dev_tree_compatible(dtb, dtb_size, dt_entry_queue);
/* goto the next device tree if any */
dtb += dtb_size;
}
best_match_dt_entry = platform_dt_match_best(dt_entry_queue);
if (best_match_dt_entry){
bestmatch_tag = (void *)best_match_dt_entry->offset;
bestmatch_tag_size = best_match_dt_entry->size;
dprintf(INFO, "Best match DTB tags %u/%08x/0x%08x/%x/%x/%x/%x/%x/%x/%x\n",
best_match_dt_entry->platform_id, best_match_dt_entry->variant_id,
best_match_dt_entry->board_hw_subtype, best_match_dt_entry->soc_rev,
best_match_dt_entry->pmic_rev[0], best_match_dt_entry->pmic_rev[1],
best_match_dt_entry->pmic_rev[2], best_match_dt_entry->pmic_rev[3],
best_match_dt_entry->offset, best_match_dt_entry->size);
dprintf(INFO, "Using pmic info 0x%0x/0x%x/0x%x/0x%0x for device 0x%0x/0x%x/0x%x/0x%0x\n",
best_match_dt_entry->pmic_rev[0], best_match_dt_entry->pmic_rev[1],
best_match_dt_entry->pmic_rev[2], best_match_dt_entry->pmic_rev[3],
board_pmic_target(0), board_pmic_target(1),
board_pmic_target(2), board_pmic_target(3));
}
/* free queue's memory */
list_for_every_entry(&dt_entry_queue->node, dt_node_tmp1, dt_node, node) {
dt_node_tmp2 = (struct dt_entry_node *) dt_node_tmp1->node.prev;
dt_entry_list_delete(dt_node_tmp1);
dt_node_tmp1 = dt_node_tmp2;
}
if(bestmatch_tag) {
memcpy(tags, bestmatch_tag, bestmatch_tag_size);
/* clear out the old DTB magic so kernel doesn't find it */
*((uint32_t *)(kernel + app_dtb_offset)) = 0;
return tags;
}
dprintf(CRITICAL, "DTB offset is incorrect, kernel image does not have appended DTB\n");
dprintf(INFO, "Device info 0x%08x/%08x/0x%08x/%u, pmic 0x%0x/0x%x/0x%x/0x%0x\n",
board_platform_id(), board_soc_version(),
board_target_id(), board_hardware_subtype(),
board_pmic_target(0), board_pmic_target(1),
board_pmic_target(2), board_pmic_target(3));
return NULL;
}
/* Returns 0 if the device tree is valid. */
int dev_tree_validate(struct dt_table *table, unsigned int page_size, uint32_t *dt_hdr_size)
{
int dt_entry_size;
uint64_t hdr_size;
/* Validate the device tree table header */
if(table->magic != DEV_TREE_MAGIC) {
dprintf(CRITICAL, "ERROR: Bad magic in device tree table \n");
return -1;
}
if (table->version == DEV_TREE_VERSION_V1) {
dt_entry_size = sizeof(struct dt_entry_v1);
} else if (table->version == DEV_TREE_VERSION_V2) {
dt_entry_size = sizeof(struct dt_entry_v2);
} else if (table->version == DEV_TREE_VERSION_V3) {
dt_entry_size = sizeof(struct dt_entry);
} else {
dprintf(CRITICAL, "ERROR: Unsupported version (%d) in DT table \n",
table->version);
return -1;
}
hdr_size = (uint64_t)table->num_entries * dt_entry_size + DEV_TREE_HEADER_SIZE;
/* Roundup to page_size. */
hdr_size = ROUNDUP(hdr_size, page_size);
if (hdr_size > UINT_MAX)
return -1;
else
*dt_hdr_size = hdr_size & UINT_MAX;
return 0;
}
static int platform_dt_absolute_match(struct dt_entry *cur_dt_entry, struct dt_entry_node *dt_list)
{
uint32_t cur_dt_hlos_ddr;
uint32_t cur_dt_hw_platform;
uint32_t cur_dt_hw_subtype;
uint32_t cur_dt_msm_id;
dt_node *dt_node_tmp = NULL;
/* Platform-id
* bit no |31 24|23 16|15 0|
* |reserved|foundry-id|msm-id|
*/
cur_dt_msm_id = (cur_dt_entry->platform_id & 0x0000ffff);
cur_dt_hw_platform = (cur_dt_entry->variant_id & 0x000000ff);
cur_dt_hw_subtype = (cur_dt_entry->board_hw_subtype & 0xff);
/* Determine the bits 10:8 to check the DT with the DDR Size */
cur_dt_hlos_ddr = (cur_dt_entry->board_hw_subtype & 0x700);
/* 1. must match the msm_id, platform_hw_id, platform_subtype and DDR size
* soc, board major/minor, pmic major/minor must less than board info
* 2. find the matched DTB then return 1
* 3. otherwise return 0
*/
if((cur_dt_msm_id == (board_platform_id() & 0x0000ffff)) &&
(cur_dt_hw_platform == board_hardware_id()) &&
(cur_dt_hw_subtype == board_hardware_subtype()) &&
(cur_dt_hlos_ddr == (target_get_hlos_subtype() & 0x700)) &&
(cur_dt_entry->soc_rev <= board_soc_version()) &&
((cur_dt_entry->variant_id & 0x00ffff00) <= (board_target_id() & 0x00ffff00)) &&
((cur_dt_entry->pmic_rev[0] & 0x00ffff00) <= (board_pmic_target(0) & 0x00ffff00)) &&
((cur_dt_entry->pmic_rev[1] & 0x00ffff00) <= (board_pmic_target(1) & 0x00ffff00)) &&
((cur_dt_entry->pmic_rev[2] & 0x00ffff00) <= (board_pmic_target(2) & 0x00ffff00)) &&
((cur_dt_entry->pmic_rev[3] & 0x00ffff00) <= (board_pmic_target(3) & 0x00ffff00))) {
dt_node_tmp = dt_entry_list_init();
memcpy((char*)dt_node_tmp->dt_entry_m,(char*)cur_dt_entry, sizeof(struct dt_entry));
dprintf(SPEW, "Add DTB entry %u/%08x/0x%08x/%x/%x/%x/%x/%x/%x/%x\n",
dt_node_tmp->dt_entry_m->platform_id, dt_node_tmp->dt_entry_m->variant_id,
dt_node_tmp->dt_entry_m->board_hw_subtype, dt_node_tmp->dt_entry_m->soc_rev,
dt_node_tmp->dt_entry_m->pmic_rev[0], dt_node_tmp->dt_entry_m->pmic_rev[1],
dt_node_tmp->dt_entry_m->pmic_rev[2], dt_node_tmp->dt_entry_m->pmic_rev[3],
dt_node_tmp->dt_entry_m->offset, dt_node_tmp->dt_entry_m->size);
insert_dt_entry_in_queue(dt_list, dt_node_tmp);
return 1;
}
return 0;
}
static int platform_dt_absolute_compat_match(struct dt_entry_node *dt_list, uint32_t dtb_info) {
struct dt_entry_node *dt_node_tmp1 = NULL;
struct dt_entry_node *dt_node_tmp2 = NULL;
uint32_t current_info = 0;
uint32_t board_info = 0;
uint32_t best_info = 0;
uint32_t current_pmic_model[4] = {0, 0, 0, 0};
uint32_t board_pmic_model[4] = {0, 0, 0, 0};
uint32_t best_pmic_model[4] = {0, 0, 0, 0};
uint32_t delete_current_dt = 0;
uint32_t i;
/* start to select the exact entry
* default to exact match 0, if find current DTB entry info is the same as board info,
* then exact match board info.
*/
list_for_every_entry(&dt_list->node, dt_node_tmp1, dt_node, node) {
if (!dt_node_tmp1){
dprintf(SPEW, "Current node is the end\n");
break;
}
switch(dtb_info) {
case DTB_FOUNDRY:
current_info = ((dt_node_tmp1->dt_entry_m->platform_id) & 0x00ff0000);
board_info = board_foundry_id() << 16;
break;
case DTB_PMIC_MODEL:
for (i = 0; i < 4; i++) {
current_pmic_model[i] = (dt_node_tmp1->dt_entry_m->pmic_rev[i] & 0xff);
board_pmic_model[i] = (board_pmic_target(i) & 0xff);
}
break;
case DTB_PANEL_TYPE:
current_info = ((dt_node_tmp1->dt_entry_m->board_hw_subtype) & 0x1800);
board_info = (target_get_hlos_subtype() & 0x1800);
break;
case DTB_BOOT_DEVICE:
current_info = ((dt_node_tmp1->dt_entry_m->board_hw_subtype) & 0xf0000);
board_info = (target_get_hlos_subtype() & 0xf0000);
break;
default:
dprintf(CRITICAL, "ERROR: Unsupported version (%d) in dt node check \n",
dtb_info);
return 0;
}
if (dtb_info == DTB_PMIC_MODEL) {
if ((current_pmic_model[0] == board_pmic_model[0]) &&
(current_pmic_model[1] == board_pmic_model[1]) &&
(current_pmic_model[2] == board_pmic_model[2]) &&
(current_pmic_model[3] == board_pmic_model[3])) {
for (i = 0; i < 4; i++) {
best_pmic_model[i] = current_pmic_model[i];
}
break;
}
} else {
if (current_info == board_info) {
best_info = current_info;
break;
}
}
}
list_for_every_entry(&dt_list->node, dt_node_tmp1, dt_node, node) {
if (!dt_node_tmp1){
dprintf(SPEW, "Current node is the end\n");
break;
}
switch(dtb_info) {
case DTB_FOUNDRY:
current_info = ((dt_node_tmp1->dt_entry_m->platform_id) & 0x00ff0000);
break;
case DTB_PMIC_MODEL:
for (i = 0; i < 4; i++) {
current_pmic_model[i] = (dt_node_tmp1->dt_entry_m->pmic_rev[i] & 0xff);
}
break;
case DTB_PANEL_TYPE:
current_info = ((dt_node_tmp1->dt_entry_m->board_hw_subtype) & 0x1800);
break;
case DTB_BOOT_DEVICE:
current_info = ((dt_node_tmp1->dt_entry_m->board_hw_subtype) & 0xf0000);
break;
default:
dprintf(CRITICAL, "ERROR: Unsupported version (%d) in dt node check \n",
dtb_info);
return 0;
}
if (dtb_info == DTB_PMIC_MODEL) {
if ((current_pmic_model[0] != best_pmic_model[0]) ||
(current_pmic_model[1] != best_pmic_model[1]) ||
(current_pmic_model[2] != best_pmic_model[2]) ||
(current_pmic_model[3] != best_pmic_model[3])) {
delete_current_dt = 1;
}
} else {
if (current_info != best_info) {
delete_current_dt = 1;
}
}
if (delete_current_dt) {
dprintf(SPEW, "Delete don't fit DTB entry %u/%08x/0x%08x/%x/%x/%x/%x/%x/%x/%x\n",
dt_node_tmp1->dt_entry_m->platform_id, dt_node_tmp1->dt_entry_m->variant_id,
dt_node_tmp1->dt_entry_m->board_hw_subtype, dt_node_tmp1->dt_entry_m->soc_rev,
dt_node_tmp1->dt_entry_m->pmic_rev[0], dt_node_tmp1->dt_entry_m->pmic_rev[1],
dt_node_tmp1->dt_entry_m->pmic_rev[2], dt_node_tmp1->dt_entry_m->pmic_rev[3],
dt_node_tmp1->dt_entry_m->offset, dt_node_tmp1->dt_entry_m->size);
dt_node_tmp2 = (struct dt_entry_node *) dt_node_tmp1->node.prev;
dt_entry_list_delete(dt_node_tmp1);
dt_node_tmp1 = dt_node_tmp2;
delete_current_dt = 0;
}
}
return 1;
}
static int update_dtb_entry_node(struct dt_entry_node *dt_list, uint32_t dtb_info) {
struct dt_entry_node *dt_node_tmp1 = NULL;
struct dt_entry_node *dt_node_tmp2 = NULL;
uint32_t current_info = 0;
uint32_t board_info = 0;
uint32_t best_info = 0;
/* start to select the best entry*/
list_for_every_entry(&dt_list->node, dt_node_tmp1, dt_node, node) {
if (!dt_node_tmp1){
dprintf(SPEW, "Current node is the end\n");
break;
}
switch(dtb_info) {
case DTB_SOC:
current_info = dt_node_tmp1->dt_entry_m->soc_rev;
board_info = board_soc_version();
break;
case DTB_MAJOR_MINOR:
current_info = ((dt_node_tmp1->dt_entry_m->variant_id) & 0x00ffff00);
board_info = (board_target_id() & 0x00ffff00);
break;
case DTB_PMIC0:
current_info = ((dt_node_tmp1->dt_entry_m->pmic_rev[0]) & 0x00ffff00);
board_info = (board_pmic_target(0) & 0x00ffff00);
break;
case DTB_PMIC1:
current_info = ((dt_node_tmp1->dt_entry_m->pmic_rev[1]) & 0x00ffff00);
board_info = (board_pmic_target(1) & 0x00ffff00);
break;
case DTB_PMIC2:
current_info = ((dt_node_tmp1->dt_entry_m->pmic_rev[2]) & 0x00ffff00);
board_info = (board_pmic_target(2) & 0x00ffff00);
break;
case DTB_PMIC3:
current_info = ((dt_node_tmp1->dt_entry_m->pmic_rev[3]) & 0x00ffff00);
board_info = (board_pmic_target(3) & 0x00ffff00);
break;
default:
dprintf(CRITICAL, "ERROR: Unsupported version (%d) in dt node check \n",
dtb_info);
return 0;
}
if (current_info == board_info) {
best_info = current_info;
break;
}
if ((current_info < board_info) && (current_info > best_info)) {
best_info = current_info;
}
if (current_info < best_info) {
dprintf(SPEW, "Delete don't fit DTB entry %u/%08x/0x%08x/%x/%x/%x/%x/%x/%x/%x\n",
dt_node_tmp1->dt_entry_m->platform_id, dt_node_tmp1->dt_entry_m->variant_id,
dt_node_tmp1->dt_entry_m->board_hw_subtype, dt_node_tmp1->dt_entry_m->soc_rev,
dt_node_tmp1->dt_entry_m->pmic_rev[0], dt_node_tmp1->dt_entry_m->pmic_rev[1],
dt_node_tmp1->dt_entry_m->pmic_rev[2], dt_node_tmp1->dt_entry_m->pmic_rev[3],
dt_node_tmp1->dt_entry_m->offset, dt_node_tmp1->dt_entry_m->size);
dt_node_tmp2 = (struct dt_entry_node *) dt_node_tmp1->node.prev;
dt_entry_list_delete(dt_node_tmp1);
dt_node_tmp1 = dt_node_tmp2;
}
}
list_for_every_entry(&dt_list->node, dt_node_tmp1, dt_node, node) {
if (!dt_node_tmp1){
dprintf(SPEW, "Current node is the end\n");
break;
}
switch(dtb_info) {
case DTB_SOC:
current_info = dt_node_tmp1->dt_entry_m->soc_rev;
break;
case DTB_MAJOR_MINOR:
current_info = ((dt_node_tmp1->dt_entry_m->variant_id) & 0x00ffff00);
break;
case DTB_PMIC0:
current_info = ((dt_node_tmp1->dt_entry_m->pmic_rev[0]) & 0x00ffff00);
break;
case DTB_PMIC1:
current_info = ((dt_node_tmp1->dt_entry_m->pmic_rev[1]) & 0x00ffff00);
break;
case DTB_PMIC2:
current_info = ((dt_node_tmp1->dt_entry_m->pmic_rev[2]) & 0x00ffff00);
break;
case DTB_PMIC3:
current_info = ((dt_node_tmp1->dt_entry_m->pmic_rev[3]) & 0x00ffff00);
break;
default:
dprintf(CRITICAL, "ERROR: Unsupported version (%d) in dt node check \n",
dtb_info);
return 0;
}
if (current_info != best_info) {
dprintf(SPEW, "Delete don't fit DTB entry %u/%08x/0x%08x/%x/%x/%x/%x/%x/%x/%x\n",
dt_node_tmp1->dt_entry_m->platform_id, dt_node_tmp1->dt_entry_m->variant_id,
dt_node_tmp1->dt_entry_m->board_hw_subtype, dt_node_tmp1->dt_entry_m->soc_rev,
dt_node_tmp1->dt_entry_m->pmic_rev[0], dt_node_tmp1->dt_entry_m->pmic_rev[1],
dt_node_tmp1->dt_entry_m->pmic_rev[2], dt_node_tmp1->dt_entry_m->pmic_rev[3],
dt_node_tmp1->dt_entry_m->offset, dt_node_tmp1->dt_entry_m->size);
dt_node_tmp2 = (struct dt_entry_node *) dt_node_tmp1->node.prev;
dt_entry_list_delete(dt_node_tmp1);
dt_node_tmp1 = dt_node_tmp2;
}
}
return 1;
}
static struct dt_entry *platform_dt_match_best(struct dt_entry_node *dt_list)
{
struct dt_entry_node *dt_node_tmp1 = NULL;
/* check Foundry id
* the foundry id must exact match board founddry id, this is compatibility check,
* if couldn't find the exact match from DTB, will exact match 0x0.
*/
if (!platform_dt_absolute_compat_match(dt_list, DTB_FOUNDRY))
return NULL;
/* check PMIC model
* the PMIC model must exact match board PMIC model, this is compatibility check,
* if couldn't find the exact match from DTB, will exact match 0x0.
*/
if (!platform_dt_absolute_compat_match(dt_list, DTB_PMIC_MODEL))
return NULL;
/* check panel type
* the panel type must exact match board panel type, this is compatibility check,
* if couldn't find the exact match from DTB, will exact match 0x0.
*/
if (!platform_dt_absolute_compat_match(dt_list, DTB_PANEL_TYPE))
return NULL;
/* check boot device subtype
* the boot device subtype must exact match board boot device subtype, this is compatibility check,
* if couldn't find the exact match from DTB, will exact match 0x0.
*/
if (!platform_dt_absolute_compat_match(dt_list, DTB_BOOT_DEVICE))
return NULL;
/* check soc version
* the suitable soc version must less than or equal to board soc version
*/
if (!update_dtb_entry_node(dt_list, DTB_SOC))
return NULL;
/*check major and minor version
* the suitable major&minor version must less than or equal to board major&minor version
*/
if (!update_dtb_entry_node(dt_list, DTB_MAJOR_MINOR))
return NULL;
/*check pmic info
* the suitable pmic major&minor info must less than or equal to board pmic major&minor version
*/
if (!update_dtb_entry_node(dt_list, DTB_PMIC0))
return NULL;
if (!update_dtb_entry_node(dt_list, DTB_PMIC1))
return NULL;
if (!update_dtb_entry_node(dt_list, DTB_PMIC2))
return NULL;
if (!update_dtb_entry_node(dt_list, DTB_PMIC3))
return NULL;
list_for_every_entry(&dt_list->node, dt_node_tmp1, dt_node, node) {
if (!dt_node_tmp1) {
dprintf(CRITICAL, "ERROR: Couldn't find the suitable DTB!\n");
return NULL;
}
if (dt_node_tmp1->dt_entry_m)
return dt_node_tmp1->dt_entry_m;
}
return NULL;
}
/* Function to obtain the index information for the correct device tree
* based on the platform data.
* If a matching device tree is found, the information is returned in the
* "dt_entry_info" out parameter and a function value of 0 is returned, otherwise
* a non-zero function value is returned.
*/
int dev_tree_get_entry_info(struct dt_table *table, struct dt_entry *dt_entry_info)
{
uint32_t i;
unsigned char *table_ptr = NULL;
struct dt_entry dt_entry_buf_1;
struct dt_entry *cur_dt_entry = NULL;
struct dt_entry *best_match_dt_entry = NULL;
struct dt_entry_v1 *dt_entry_v1 = NULL;
struct dt_entry_v2 *dt_entry_v2 = NULL;
struct dt_entry_node *dt_entry_queue = NULL;
struct dt_entry_node *dt_node_tmp1 = NULL;
struct dt_entry_node *dt_node_tmp2 = NULL;
uint32_t found = 0;
if (!dt_entry_info) {
dprintf(CRITICAL, "ERROR: Bad parameter passed to %s \n",
__func__);
return -1;
}
table_ptr = (unsigned char *)table + DEV_TREE_HEADER_SIZE;
cur_dt_entry = &dt_entry_buf_1;
best_match_dt_entry = NULL;
dt_entry_queue = (struct dt_entry_node *)
malloc(sizeof(struct dt_entry_node));
if (!dt_entry_queue) {
dprintf(CRITICAL, "Out of memory\n");
return -1;
}
list_initialize(&dt_entry_queue->node);
dprintf(INFO, "DTB Total entry: %d, DTB version: %d\n", table->num_entries, table->version);
for(i = 0; found == 0 && i < table->num_entries; i++)
{
memset(cur_dt_entry, 0, sizeof(struct dt_entry));
switch(table->version) {
case DEV_TREE_VERSION_V1:
dt_entry_v1 = (struct dt_entry_v1 *)table_ptr;
cur_dt_entry->platform_id = dt_entry_v1->platform_id;
cur_dt_entry->variant_id = dt_entry_v1->variant_id;
cur_dt_entry->soc_rev = dt_entry_v1->soc_rev;
cur_dt_entry->board_hw_subtype = (dt_entry_v1->variant_id >> 0x18);
cur_dt_entry->pmic_rev[0] = board_pmic_target(0);
cur_dt_entry->pmic_rev[1] = board_pmic_target(1);
cur_dt_entry->pmic_rev[2] = board_pmic_target(2);
cur_dt_entry->pmic_rev[3] = board_pmic_target(3);
cur_dt_entry->offset = dt_entry_v1->offset;
cur_dt_entry->size = dt_entry_v1->size;
table_ptr += sizeof(struct dt_entry_v1);
break;
case DEV_TREE_VERSION_V2:
dt_entry_v2 = (struct dt_entry_v2*)table_ptr;
cur_dt_entry->platform_id = dt_entry_v2->platform_id;
cur_dt_entry->variant_id = dt_entry_v2->variant_id;
cur_dt_entry->soc_rev = dt_entry_v2->soc_rev;
/* For V2 version of DTBs we have platform version field as part
* of variant ID, in such case the subtype will be mentioned as 0x0
* As the qcom, board-id = <0xSSPMPmPH, 0x0>
* SS -- Subtype
* PM -- Platform major version
* Pm -- Platform minor version
* PH -- Platform hardware CDP/MTP
* In such case to make it compatible with LK algorithm move the subtype
* from variant_id to subtype field
*/
if (dt_entry_v2->board_hw_subtype == 0)
cur_dt_entry->board_hw_subtype = (cur_dt_entry->variant_id >> 0x18);
else
cur_dt_entry->board_hw_subtype = dt_entry_v2->board_hw_subtype;
cur_dt_entry->pmic_rev[0] = board_pmic_target(0);
cur_dt_entry->pmic_rev[1] = board_pmic_target(1);
cur_dt_entry->pmic_rev[2] = board_pmic_target(2);
cur_dt_entry->pmic_rev[3] = board_pmic_target(3);
cur_dt_entry->offset = dt_entry_v2->offset;
cur_dt_entry->size = dt_entry_v2->size;
table_ptr += sizeof(struct dt_entry_v2);
break;
case DEV_TREE_VERSION_V3:
memcpy(cur_dt_entry, (struct dt_entry *)table_ptr,
sizeof(struct dt_entry));
/* For V3 version of DTBs we have platform version field as part
* of variant ID, in such case the subtype will be mentioned as 0x0
* As the qcom, board-id = <0xSSPMPmPH, 0x0>
* SS -- Subtype
* PM -- Platform major version
* Pm -- Platform minor version
* PH -- Platform hardware CDP/MTP
* In such case to make it compatible with LK algorithm move the subtype
* from variant_id to subtype field
*/
if (cur_dt_entry->board_hw_subtype == 0)
cur_dt_entry->board_hw_subtype = (cur_dt_entry->variant_id >> 0x18);
table_ptr += sizeof(struct dt_entry);
break;
default:
dprintf(CRITICAL, "ERROR: Unsupported version (%d) in DT table \n",
table->version);
free(dt_entry_queue);
return -1;
}
/* DTBs must match the platform_id, platform_hw_id, platform_subtype and DDR size.
* The satisfactory DTBs are stored in dt_entry_queue
*/
platform_dt_absolute_match(cur_dt_entry, dt_entry_queue);
}
best_match_dt_entry = platform_dt_match_best(dt_entry_queue);
if (best_match_dt_entry) {
*dt_entry_info = *best_match_dt_entry;
found = 1;
}
if (found != 0) {
dprintf(INFO, "Using DTB entry 0x%08x/%08x/0x%08x/%u for device 0x%08x/%08x/0x%08x/%u\n",
dt_entry_info->platform_id, dt_entry_info->soc_rev,
dt_entry_info->variant_id, dt_entry_info->board_hw_subtype,
board_platform_id(), board_soc_version(),
board_target_id(), board_hardware_subtype());
if (dt_entry_info->pmic_rev[0] == 0 && dt_entry_info->pmic_rev[0] == 0 &&
dt_entry_info->pmic_rev[0] == 0 && dt_entry_info->pmic_rev[0] == 0) {
dprintf(SPEW, "No maintain pmic info in DTB, device pmic info is 0x%0x/0x%x/0x%x/0x%0x\n",
board_pmic_target(0), board_pmic_target(1),
board_pmic_target(2), board_pmic_target(3));
} else {
dprintf(INFO, "Using pmic info 0x%0x/0x%x/0x%x/0x%0x for device 0x%0x/0x%x/0x%x/0x%0x\n",
dt_entry_info->pmic_rev[0], dt_entry_info->pmic_rev[1],
dt_entry_info->pmic_rev[2], dt_entry_info->pmic_rev[3],
board_pmic_target(0), board_pmic_target(1),
board_pmic_target(2), board_pmic_target(3));
}
return 0;
}
dprintf(CRITICAL, "ERROR: Unable to find suitable device tree for device (%u/0x%08x/0x%08x/%u)\n",
board_platform_id(), board_soc_version(),
board_target_id(), board_hardware_subtype());
list_for_every_entry(&dt_entry_queue->node, dt_node_tmp1, dt_node, node) {
/* free node memory */
dt_node_tmp2 = (struct dt_entry_node *) dt_node_tmp1->node.prev;
dt_entry_list_delete(dt_node_tmp1);
dt_node_tmp1 = dt_node_tmp2;
}
free(dt_entry_queue);
return -1;
}
/* Function to add the first RAM partition info to the device tree.
* Note: The function replaces the reg property in the "/memory" node
* with the addr and size provided.
*/
int dev_tree_add_first_mem_info(uint32_t *fdt, uint32_t offset, uint32_t addr, uint32_t size)
{
int ret;
ret = fdt_setprop_u32(fdt, offset, "reg", addr);
if (ret)
{
dprintf(CRITICAL, "Failed to add the memory information addr: %d\n",
ret);
}
ret = fdt_appendprop_u32(fdt, offset, "reg", size);
if (ret)
{
dprintf(CRITICAL, "Failed to add the memory information size: %d\n",
ret);
}
return ret;
}
static int dev_tree_query_memory_cell_sizes(void *fdt, struct dt_mem_node_info *mem_node, uint32_t mem_node_offset)
{
int len;
uint32_t *valp;
int ret;
uint32_t offset;
mem_node->offset = mem_node_offset;
/* Get offset of the root node */
ret = fdt_path_offset(fdt, "/");
if (ret < 0)
{
dprintf(CRITICAL, "Could not find memory node.\n");
return ret;
}
offset = ret;
/* Find the #address-cells size. */
valp = (uint32_t*)fdt_getprop(fdt, offset, "#address-cells", &len);
if (len <= 0 || !valp)
{
if (len == -FDT_ERR_NOTFOUND)
{
/* Property not found.
* Assume standard sizes.
*/
mem_node->addr_cell_size = 2;
dprintf(CRITICAL, "Using default #addr_cell_size: %u\n", mem_node->addr_cell_size);
}
else
{
dprintf(CRITICAL, "Error finding the #address-cells property\n");
return len;
}
}
else
mem_node->addr_cell_size = fdt32_to_cpu(*valp);
/* Find the #size-cells size. */
valp = (uint32_t*)fdt_getprop(fdt, offset, "#size-cells", &len);
if (len <= 0 || !valp)
{
if (len == -FDT_ERR_NOTFOUND)
{
/* Property not found.
* Assume standard sizes.
*/
mem_node->size_cell_size = 1;
dprintf(CRITICAL, "Using default #size_cell_size: %u\n", mem_node->size_cell_size);
}
else
{
dprintf(CRITICAL, "Error finding the #size-cells property\n");
return len;
}
}
else
mem_node->size_cell_size = fdt32_to_cpu(*valp);
return 0;
}
static void dev_tree_update_memory_node(uint32_t offset)
{
mem_node.offset = offset;
mem_node.addr_cell_size = 1;
mem_node.size_cell_size = 1;
}
/* Function to add the subsequent RAM partition info to the device tree. */
int dev_tree_add_mem_info(void *fdt, uint32_t offset, uint64_t addr, uint64_t size)
{
int ret = 0;
if(smem_get_ram_ptable_version() >= 1)
{
ret = dev_tree_query_memory_cell_sizes(fdt, &mem_node, offset);
if (ret < 0)
{
dprintf(CRITICAL, "Could not find #address-cells and #size-cells properties: ret %d\n", ret);
return ret;
}
}
else
{
dev_tree_update_memory_node(offset);
}
if (!(mem_node.mem_info_cnt))
{
/* Replace any other reg prop in the memory node. */
/* cell_size is the number of 32 bit words used to represent an address/length in the device tree.
* memory node in DT can be either 32-bit(cell-size = 1) or 64-bit(cell-size = 2).So when updating
* the memory node in the device tree, we write one word or two words based on cell_size = 1 or 2.
*/
if(mem_node.addr_cell_size == 2)
{
ret = fdt_setprop_u32(fdt, mem_node.offset, "reg", addr >> 32);
if(ret)
{
dprintf(CRITICAL, "ERROR: Could not set prop reg for memory node\n");
return ret;
}
ret = fdt_appendprop_u32(fdt, mem_node.offset, "reg", (uint32_t)addr);
if(ret)
{
dprintf(CRITICAL, "ERROR: Could not append prop reg for memory node\n");
return ret;
}
}
else
{
ret = fdt_setprop_u32(fdt, mem_node.offset, "reg", (uint32_t)addr);
if(ret)
{
dprintf(CRITICAL, "ERROR: Could not set prop reg for memory node\n");
return ret;
}
}
mem_node.mem_info_cnt = 1;
}
else
{
/* Append the mem info to the reg prop for subsequent nodes. */
if(mem_node.addr_cell_size == 2)
{
ret = fdt_appendprop_u32(fdt, mem_node.offset, "reg", addr >> 32);
if(ret)
{
dprintf(CRITICAL, "ERROR: Could not append prop reg for memory node\n");
return ret;
}
}
ret = fdt_appendprop_u32(fdt, mem_node.offset, "reg", (uint32_t)addr);
if(ret)
{
dprintf(CRITICAL, "ERROR: Could not append prop reg for memory node\n");
return ret;
}
}
if(mem_node.size_cell_size == 2)
{
ret = fdt_appendprop_u32(fdt, mem_node.offset, "reg", size>>32);
if(ret)
{
dprintf(CRITICAL, "ERROR: Could not append prop reg for memory node\n");
return ret;
}
}
ret = fdt_appendprop_u32(fdt, mem_node.offset, "reg", (uint32_t)size);
if (ret)
{
dprintf(CRITICAL, "Failed to add the memory information size: %d\n",
ret);
return ret;
}
return ret;
}
/* Top level function that updates the device tree. */
int update_device_tree(void *fdt, const char *cmdline,
void *ramdisk, uint32_t ramdisk_size)
{
int ret = 0;
uint32_t offset;
/* Check the device tree header */
ret = fdt_check_header(fdt) || fdt_check_header_ext(fdt);
if (ret)
{
dprintf(CRITICAL, "Invalid device tree header \n");
return ret;
}
if (check_aboot_addr_range_overlap((uint32_t)fdt,
(fdt_totalsize(fdt) + DTB_PAD_SIZE))) {
dprintf(CRITICAL, "Error: Fdt addresses overlap with aboot addresses.\n");
return ret;
}
/* Add padding to make space for new nodes and properties. */
ret = fdt_open_into(fdt, fdt, fdt_totalsize(fdt) + DTB_PAD_SIZE);
if (ret!= 0)
{
dprintf(CRITICAL, "Failed to move/resize dtb buffer: %d\n", ret);
return ret;
}
/* Get offset of the memory node */
ret = fdt_path_offset(fdt, "/memory");
if (ret < 0)
{
dprintf(CRITICAL, "Could not find memory node.\n");
return ret;
}
offset = ret;
ret = target_dev_tree_mem(fdt, offset);
if(ret)
{
dprintf(CRITICAL, "ERROR: Cannot update memory node\n");
return ret;
}
/* Get offset of the chosen node */
ret = fdt_path_offset(fdt, "/chosen");
if (ret < 0)
{
dprintf(CRITICAL, "Could not find chosen node.\n");
return ret;
}
offset = ret;
if (cmdline)
{
/* Adding the cmdline to the chosen node */
ret = fdt_appendprop_string(fdt, offset, (const char*)"bootargs", (const void*)cmdline);
if (ret)
{
dprintf(CRITICAL, "ERROR: Cannot update chosen node [bootargs]\n");
return ret;
}
}
if (ramdisk_size) {
/* Adding the initrd-start to the chosen node */
ret = fdt_setprop_u32(fdt, offset, "linux,initrd-start",
(uint32_t)ramdisk);
if (ret)
{
dprintf(CRITICAL, "ERROR: Cannot update chosen node [linux,initrd-start]\n");
return ret;
}
/* Adding the initrd-end to the chosen node */
ret = fdt_setprop_u32(fdt, offset, "linux,initrd-end",
((uint32_t)ramdisk + ramdisk_size));
if (ret)
{
dprintf(CRITICAL, "ERROR: Cannot update chosen node [linux,initrd-end]\n");
return ret;
}
}
fdt_pack(fdt);
#if ENABLE_PARTIAL_GOODS_SUPPORT
update_partial_goods_dtb_nodes(fdt);
#endif
return ret;
}