blob: 826c002907d69f624c19bff24257b5382a4d61f4 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2019 Stephan Gerhold <stephan@gerhold.net>
*/
#include <env.h>
#include <fdt_support.h>
#include <init.h>
#include <log.h>
#include <stdlib.h>
#include <linux/errno.h>
#include <asm/global_data.h>
#include <asm/setup.h>
#include <asm/system.h>
DECLARE_GLOBAL_DATA_PTR;
/* Parse atags provided by Samsung bootloader to get available memory */
static ulong fw_mach __section(".data");
static ulong fw_atags __section(".data");
static const struct tag *fw_atags_copy;
static uint fw_atags_size;
void save_boot_params(ulong r0, ulong r1, ulong r2, ulong r3)
{
fw_mach = r1;
fw_atags = r2;
save_boot_params_ret();
}
static const struct tag *fw_atags_get(void)
{
const struct tag *tags = (const struct tag *)fw_atags;
if (tags->hdr.tag != ATAG_CORE) {
log_err("Invalid atags: tag 0x%x at %p\n", tags->hdr.tag, tags);
return NULL;
}
return tags;
}
int dram_init(void)
{
const struct tag *t, *tags = fw_atags_get();
if (!tags)
return -EINVAL;
for_each_tag(t, tags) {
if (t->hdr.tag != ATAG_MEM)
continue;
debug("Memory: %#x-%#x (size %#x)\n", t->u.mem.start,
t->u.mem.start + t->u.mem.size, t->u.mem.size);
gd->ram_size += t->u.mem.size;
}
return 0;
}
int dram_init_banksize(void)
{
const struct tag *t, *tags = fw_atags_get();
unsigned int bank = 0;
if (!tags)
return -EINVAL;
for_each_tag(t, tags) {
if (t->hdr.tag != ATAG_MEM)
continue;
gd->bd->bi_dram[bank].start = t->u.mem.start;
gd->bd->bi_dram[bank].size = t->u.mem.size;
if (++bank == CONFIG_NR_DRAM_BANKS)
break;
}
return 0;
}
int board_init(void)
{
gd->bd->bi_arch_number = fw_mach;
gd->bd->bi_boot_params = fw_atags;
return 0;
}
static void parse_serial(const struct tag_serialnr *serialnr)
{
char serial[17];
if (env_get("serial#"))
return;
sprintf(serial, "%08x%08x", serialnr->high, serialnr->low);
env_set("serial#", serial);
}
#define SBL_BOARD "board_id="
#define SBL_LCDTYPE "lcdtype="
static ulong board_id = 0;
static ulong lcdtype = 0;
static void parse_cmdline(const struct tag_cmdline *cmdline)
{
char *buf;
/* Export this to sbl_cmdline (secondary boot loader command line) */
env_set("sbl_cmdline", cmdline->cmdline);
buf = strstr(cmdline->cmdline, SBL_BOARD);
if (!buf)
return;
buf += strlen(SBL_BOARD);
board_id = simple_strtoul(buf, NULL, 10);
buf = strstr(cmdline->cmdline, SBL_LCDTYPE);
if (!buf)
return;
buf += strlen(SBL_LCDTYPE);
lcdtype = simple_strtoul(buf, NULL, 10);
}
/*
* The downstream/vendor kernel (provided by Samsung) uses ATAGS for booting.
* It also requires an extremely long cmdline provided by the primary bootloader
* that is not suitable for booting mainline.
*
* Since downstream is the only user of ATAGS, we emulate the behavior of the
* Samsung bootloader by generating only the initrd atag in U-Boot, and copying
* all other ATAGS as-is from the primary bootloader.
*/
static inline bool skip_atag(u32 tag)
{
return (tag == ATAG_NONE || tag == ATAG_CORE ||
tag == ATAG_INITRD || tag == ATAG_INITRD2);
}
static void copy_atags(const struct tag *tags)
{
const struct tag *t;
struct tag *copy;
if (!tags)
return;
/* Calculate necessary size for tags we want to copy */
for_each_tag(t, tags) {
if (skip_atag(t->hdr.tag))
continue;
if (t->hdr.tag == ATAG_SERIAL)
parse_serial(&t->u.serialnr);
if (t->hdr.tag == ATAG_CMDLINE)
parse_cmdline(&t->u.cmdline);
fw_atags_size += t->hdr.size * sizeof(u32);
}
if (!fw_atags_size)
return; /* No tags to copy */
copy = malloc(fw_atags_size);
if (!copy)
return;
fw_atags_copy = copy;
/* Copy tags */
for_each_tag(t, tags) {
if (skip_atag(t->hdr.tag))
continue;
memcpy(copy, t, t->hdr.size * sizeof(u32));
copy = tag_next(copy);
}
}
int misc_init_r(void)
{
copy_atags(fw_atags_get());
return 0;
}
void setup_board_tags(struct tag **in_params)
{
if (!fw_atags_copy)
return;
/*
* fw_atags_copy contains only full "struct tag" (plus data)
* so copying it bytewise here should be fine.
*/
memcpy(*in_params, fw_atags_copy, fw_atags_size);
*(u8 **)in_params += fw_atags_size;
}
/* These numbers are unique per product but not across all products */
#define SAMSUNG_CODINA_LCD_LMS380KF01 4
#define SAMSUNG_CODINA_LCD_S6D27A1 13
#define SAMSUNG_SKOMER_LCD_HVA40WV1 10
#define SAMSUNG_SKOMER_LCD_NT35512 12
static void codina_patch_display(void *fdt)
{
int node;
int ret;
node = fdt_path_offset(fdt, "/spi-gpio-0/panel");
if (node < 0) {
printf("cannot find Codina panel node\n");
return;
}
if (lcdtype == SAMSUNG_CODINA_LCD_LMS380KF01) {
ret = fdt_setprop_string(fdt, node, "compatible", "samsung,lms380kf01");
if (ret < 0)
printf("could not set LCD compatible\n");
else
printf("updated LCD compatible to LMS380KF01\n");
} else if (lcdtype == SAMSUNG_CODINA_LCD_S6D27A1) {
ret = fdt_setprop_string(fdt, node, "compatible", "samsung,s6d27a1");
if (ret < 0)
printf("could not set LCD compatible\n");
else
printf("updated LCD compatible to S6D27A1\n");
} else {
printf("unknown LCD type\n");
}
}
static void skomer_kyle_patch_display(void *fdt)
{
int node;
int ret;
node = fdt_path_offset(fdt, "/soc/mcde/dsi/panel");
if (node < 0) {
printf("cannot find Skomer/Kyle panel node\n");
return;
}
if (lcdtype == SAMSUNG_SKOMER_LCD_HVA40WV1) {
ret = fdt_setprop_string(fdt, node, "compatible", "hydis,hva40wv1");
if (ret < 0)
printf("could not set LCD compatible\n");
else
printf("updated LCD compatible to Hydis HVA40WV1\n");
} else if (lcdtype == SAMSUNG_SKOMER_LCD_NT35512) {
/*
* FIXME: This panel is actually a BOE product, but we don't know
* the exact product name, so the compatible for the NT35512
* is used for the time being. The vendor drivers also call it NT35512.
*/
ret = fdt_setprop_string(fdt, node, "compatible", "novatek,nt35512");
if (ret < 0)
printf("could not set LCD compatible\n");
else
printf("updated LCD compatible to Novatek NT35512\n");
} else {
printf("unknown LCD type\n");
}
}
int ft_board_setup(void *fdt, struct bd_info *bd)
{
const char *str;
int node;
int ret;
printf("stemmy patch: DTB at 0x%08lx\n", (ulong)fdt);
/* Inspect FDT to see what we've got here */
ret = fdt_check_header(fdt);
if (ret < 0) {
printf("invalid DTB\n");
return ret;
}
node = fdt_path_offset(fdt, "/");
if (node < 0) {
printf("cannot find root node\n");
return node;
}
str = fdt_stringlist_get(fdt, node, "compatible", 0, NULL);
if (!str) {
printf("could not find board compatible\n");
return -1;
}
if (!strcmp(str, "samsung,janice")) {
switch(board_id) {
case 7:
printf("Janice GT-I9070 Board Rev 0.0\n");
break;
case 8:
printf("Janice GT-I9070 Board Rev 0.1\n");
break;
case 9:
printf("Janice GT-I9070 Board Rev 0.2\n");
break;
case 10:
printf("Janice GT-I9070 Board Rev 0.3\n");
break;
case 11:
printf("Janice GT-I9070 Board Rev 0.4\n");
break;
case 12:
printf("Janice GT-I9070 Board Rev 0.5\n");
break;
case 13:
printf("Janice GT-I9070 Board Rev 0.6\n");
break;
default:
break;
}
} else if (!strcmp(str, "samsung,gavini")) {
switch(board_id) {
case 7:
printf("Gavini GT-I8530 Board Rev 0.0\n");
break;
case 8:
printf("Gavini GT-I8530 Board Rev 0.0A\n");
break;
case 9:
printf("Gavini GT-I8530 Board Rev 0.0B\n");
break;
case 10:
printf("Gavini GT-I8530 Board Rev 0.0A_EMUL\n");
break;
case 11:
printf("Gavini GT-I8530 Board Rev 0.0C\n");
break;
case 12:
printf("Gavini GT-I8530 Board Rev 0.0D\n");
break;
case 13:
printf("Gavini GT-I8530 Board Rev 0.1\n");
break;
case 14:
printf("Gavini GT-I8530 Board Rev 0.3\n");
break;
default:
break;
}
} else if (!strcmp(str, "samsung,codina")) {
switch(board_id) {
case 7:
printf("Codina GT-I8160 Board Rev 0.0\n");
break;
case 8:
printf("Codina GT-I8160 Board Rev 0.1\n");
break;
case 9:
printf("Codina GT-I8160 Board Rev 0.2\n");
break;
case 10:
printf("Codina GT-I8160 Board Rev 0.3\n");
break;
case 11:
printf("Codina GT-I8160 Board Rev 0.4\n");
break;
case 12:
printf("Codina GT-I8160 Board Rev 0.5\n");
break;
default:
break;
}
codina_patch_display(fdt);
} else if (!strcmp(str, "samsung,codina-tmo")) {
switch(board_id) {
case 0x101:
printf("Codina SGH-T599 Board pre-Rev 0.0\n");
break;
case 0x102:
printf("Codina SGH-T599 Board Rev 0.0\n");
break;
case 0x103:
printf("Codina SGH-T599 Board Rev 0.1\n");
break;
case 0x104:
printf("Codina SGH-T599 Board Rev 0.2\n");
break;
case 0x105:
printf("Codina SGH-T599 Board Rev 0.4\n");
break;
case 0x106:
printf("Codina SGH-T599 Board Rev 0.6\n");
break;
case 0x107:
printf("Codina SGH-T599 Board Rev 0.7\n");
break;
default:
break;
}
codina_patch_display(fdt);
} else if (!strcmp(str, "samsung,golden")) {
switch(board_id) {
case 0x102:
printf("Golden GT-I8190 Board SW bringup\n");
break;
case 0x103:
printf("Golden GT-I8190 Board Rev 0.2\n");
break;
case 0x104:
printf("Golden GT-I8190 Board Rev 0.3\n");
break;
case 0x105:
printf("Golden GT-I8190 Board Rev 0.4\n");
break;
case 0x106:
printf("Golden GT-I8190 Board Rev 0.5\n");
break;
case 0x107:
printf("Golden GT-I8190 Board Rev 0.6\n");
break;
default:
break;
}
} else if (!strcmp(str, "samsung,skomer")) {
switch(board_id) {
case 0x101:
printf("Skomer GT-S7710 Board Rev 0.0\n");
break;
case 0x102:
printf("Skomer GT-S7710 Board Rev 0.1\n");
break;
case 0x103:
printf("Skomer GT-S7710 Board Rev 0.2\n");
break;
case 0x104:
printf("Skomer GT-S7710 Board Rev 0.3\n");
break;
case 0x105:
printf("Skomer GT-S7710 Board Rev 0.4\n");
break;
case 0x106:
printf("Skomer GT-S7710 Board Rev 0.5\n");
break;
case 0x107:
printf("Skomer GT-S7710 Board Rev 0.6\n");
break;
case 0x108:
printf("Skomer GT-S7710 Board Rev 0.7\n");
break;
case 0x109:
printf("Skomer GT-S7710 Board Rev 0.8\n");
break;
default:
break;
}
skomer_kyle_patch_display(fdt);
} else if (!strcmp(str, "samsung,kyle")) {
switch(board_id) {
case 0x101:
printf("Kyle SGH-I407 Board Rev 0.0\n");
break;
case 0x102:
printf("Kyle SGH-I407 Board Rev 0.1\n");
break;
case 0x103:
printf("Kyle SGH-I407 Board Rev 0.2\n");
break;
case 0x104:
printf("Kyle SGH-I407 Board Rev 0.3\n");
break;
case 0x105:
printf("Kyle SGH-I407 Board Rev 0.4\n");
break;
case 0x106:
printf("Kyle SGH-I407 Board Rev 0.5\n");
break;
case 0x107:
printf("Kyle SGH-I407 Board Rev 0.6\n");
break;
default:
break;
}
skomer_kyle_patch_display(fdt);
}
return 0;
}