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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2019 Julien Masson <jmasson@baylibre.com>
* (C) Copyright 2019 Neil Armstrong <narmstrong@baylibre.com>
*/
#include <common.h>
#include <init.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <dm.h>
#include <linux/bitfield.h>
#include <regmap.h>
#include <syscon.h>
#include <linux/bitops.h>
#include <linux/err.h>
#define AO_SEC_SD_CFG8 0xe0
#define AO_SEC_SOCINFO_OFFSET AO_SEC_SD_CFG8
#define SOCINFO_MAJOR GENMASK(31, 24)
#define SOCINFO_PACK GENMASK(23, 16)
#define SOCINFO_MINOR GENMASK(15, 8)
#define SOCINFO_MISC GENMASK(7, 0)
static const struct meson_gx_soc_id {
const char *name;
unsigned int id;
} soc_ids[] = {
{ "GXBB", 0x1f },
{ "GXTVBB", 0x20 },
{ "GXL", 0x21 },
{ "GXM", 0x22 },
{ "TXL", 0x23 },
{ "TXLX", 0x24 },
{ "AXG", 0x25 },
{ "GXLX", 0x26 },
{ "TXHD", 0x27 },
{ "G12A", 0x28 },
{ "G12B", 0x29 },
{ "SM1", 0x2b },
{ "A1", 0x2c },
};
static const struct meson_gx_package_id {
const char *name;
unsigned int major_id;
unsigned int pack_id;
unsigned int pack_mask;
} soc_packages[] = {
{ "S905", 0x1f, 0, 0x20 }, /* pack_id != 0x20 */
{ "S905H", 0x1f, 0x3, 0xf }, /* pack_id & 0xf == 0x3 */
{ "S905M", 0x1f, 0x20, 0xf0 }, /* pack_id == 0x20 */
{ "S905D", 0x21, 0, 0xf0 },
{ "S905X", 0x21, 0x80, 0xf0 },
{ "S905W", 0x21, 0xa0, 0xf0 },
{ "S905L", 0x21, 0xc0, 0xf0 },
{ "S905M2", 0x21, 0xe0, 0xf0 },
{ "S805X", 0x21, 0x30, 0xf0 },
{ "S805Y", 0x21, 0xb0, 0xf0 },
{ "S912", 0x22, 0, 0x0 }, /* Only S912 is known for GXM */
{ "962X", 0x24, 0x10, 0xf0 },
{ "962E", 0x24, 0x20, 0xf0 },
{ "A113X", 0x25, 0x37, 0xff },
{ "A113D", 0x25, 0x22, 0xff },
{ "S905D2", 0x28, 0x10, 0xf0 },
{ "S905Y2", 0x28, 0x30, 0xf0 },
{ "S905X2", 0x28, 0x40, 0xf0 },
{ "A311D", 0x29, 0x10, 0xf0 },
{ "S922X", 0x29, 0x40, 0xf0 },
{ "S905D3", 0x2b, 0x4, 0xf5 },
{ "S905X3", 0x2b, 0x5, 0xf5 },
{ "S905X3", 0x2b, 0x10, 0x3f },
{ "S905D3", 0x2b, 0x30, 0x3f },
{ "A113L", 0x2c, 0x0, 0xf8 },
};
DECLARE_GLOBAL_DATA_PTR;
static inline unsigned int socinfo_to_major(u32 socinfo)
{
return FIELD_GET(SOCINFO_MAJOR, socinfo);
}
static inline unsigned int socinfo_to_minor(u32 socinfo)
{
return FIELD_GET(SOCINFO_MINOR, socinfo);
}
static inline unsigned int socinfo_to_pack(u32 socinfo)
{
return FIELD_GET(SOCINFO_PACK, socinfo);
}
static inline unsigned int socinfo_to_misc(u32 socinfo)
{
return FIELD_GET(SOCINFO_MISC, socinfo);
}
static const char *socinfo_to_package_id(u32 socinfo)
{
unsigned int pack = socinfo_to_pack(socinfo);
unsigned int major = socinfo_to_major(socinfo);
int i;
for (i = 0 ; i < ARRAY_SIZE(soc_packages) ; ++i) {
if (soc_packages[i].major_id == major &&
soc_packages[i].pack_id ==
(pack & soc_packages[i].pack_mask))
return soc_packages[i].name;
}
return "Unknown";
}
static const char *socinfo_to_soc_id(u32 socinfo)
{
unsigned int id = socinfo_to_major(socinfo);
int i;
for (i = 0 ; i < ARRAY_SIZE(soc_ids) ; ++i) {
if (soc_ids[i].id == id)
return soc_ids[i].name;
}
return "Unknown";
}
static void print_board_model(void)
{
const char *model;
model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
printf("Model: %s\n", model ? model : "Unknown");
}
static unsigned int get_socinfo(void)
{
struct regmap *regmap;
int nodeoffset, ret;
ofnode node;
unsigned int socinfo;
/* find the offset of compatible node */
nodeoffset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
"amlogic,meson-gx-ao-secure");
if (nodeoffset < 0)
return 0;
/* check if chip-id is available */
if (!fdt_getprop(gd->fdt_blob, nodeoffset, "amlogic,has-chip-id", NULL))
return 0;
/* get regmap from the syscon node */
node = offset_to_ofnode(nodeoffset);
regmap = syscon_node_to_regmap(node);
if (IS_ERR(regmap)) {
printf("%s: failed to get regmap\n", __func__);
return 0;
}
/* read soc info */
ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo);
if (ret && !socinfo) {
printf("%s: invalid chipid value\n", __func__);
return 0;
}
return socinfo;
}
int show_board_info(void)
{
unsigned int socinfo;
/* print board information */
print_board_model();
socinfo = get_socinfo();
if (!socinfo)
return 0;
printf("SoC: Amlogic Meson %s (%s) Revision %x:%x (%x:%x)\n",
socinfo_to_soc_id(socinfo),
socinfo_to_package_id(socinfo),
socinfo_to_major(socinfo),
socinfo_to_minor(socinfo),
socinfo_to_pack(socinfo),
socinfo_to_misc(socinfo));
return 0;
}
int meson_get_soc_rev(char *buff, size_t buff_len)
{
unsigned int socinfo;
socinfo = get_socinfo();
if (!socinfo)
return -1;
/* Write SoC info */
return snprintf(buff, buff_len, "%x", socinfo_to_minor(socinfo));
}
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