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omap: Add routine for setting fastboot variables

This patch reuses new option, which allows us to expose variables
from environment to "fastboot getvar" command. Those variables must be
of "fastboot.%s" format.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
tags/2020-06-01
Semen Protsenko 4 years ago
committed by Tom Rini
parent
commit
fa24eca1f2
2 changed files with 121 additions and 0 deletions
  1. +6
    -0
      arch/arm/include/asm/omap_common.h
  2. +115
    -0
      arch/arm/mach-omap2/utils.c

+ 6
- 0
arch/arm/include/asm/omap_common.h View File

@@ -655,6 +655,12 @@ void omap_die_id_get_board_serial(struct tag_serialnr *serialnr);
void omap_die_id_usbethaddr(void);
void omap_die_id_display(void);

#ifdef CONFIG_FASTBOOT_FLASH
void omap_set_fastboot_vars(void);
#else
static inline void omap_set_fastboot_vars(void) { }
#endif

void recalibrate_iodelay(void);

void omap_smc1(u32 service, u32 val);


+ 115
- 0
arch/arm/mach-omap2/utils.c View File

@@ -19,6 +19,121 @@ static void do_cancel_out(u32 *num, u32 *den, u32 factor)
}
}

#ifdef CONFIG_FASTBOOT_FLASH
static void omap_set_fastboot_cpu(void)
{
char *cpu;
u32 cpu_rev = omap_revision();

switch (cpu_rev) {
case DRA752_ES1_0:
case DRA752_ES1_1:
case DRA752_ES2_0:
cpu = "DRA752";
break;
case DRA722_ES1_0:
case DRA722_ES2_0:
cpu = "DRA722";
break;
default:
cpu = NULL;
printf("Warning: fastboot.cpu: unknown CPU rev: %u\n", cpu_rev);
}

setenv("fastboot.cpu", cpu);
}

static void omap_set_fastboot_secure(void)
{
const char *secure;
u32 dev = get_device_type();

switch (dev) {
case EMU_DEVICE:
secure = "EMU";
break;
case HS_DEVICE:
secure = "HS";
break;
case GP_DEVICE:
secure = "GP";
break;
default:
secure = NULL;
printf("Warning: fastboot.secure: unknown CPU sec: %u\n", dev);
}

setenv("fastboot.secure", secure);
}

static void omap_set_fastboot_board_rev(void)
{
const char *board_rev;

board_rev = getenv("board_rev");
if (board_rev == NULL)
printf("Warning: fastboot.board_rev: unknown board revision\n");

setenv("fastboot.board_rev", board_rev);
}

#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
static u32 omap_mmc_get_part_size(const char *part)
{
int res;
struct blk_desc *dev_desc;
disk_partition_t info;
u64 sz = 0;

dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
error("invalid mmc device\n");
return 0;
}

res = part_get_info_by_name(dev_desc, part, &info);
if (res < 0) {
error("cannot find partition: '%s'\n", part);
return 0;
}

/* Calculate size in bytes */
sz = (info.size * (u64)info.blksz);
/* to KiB */
sz >>= 10;

return (u32)sz;
}

static void omap_set_fastboot_userdata_size(void)
{
char buf[16];
u32 sz_kb;

sz_kb = omap_mmc_get_part_size("userdata");
if (sz_kb == 0) {
buf[0] = '\0';
printf("Warning: fastboot.userdata_size: unable to calc\n");
} else {
sprintf(buf, "%u", sz_kb);
}

setenv("fastboot.userdata_size", buf);
}
#else
static inline void omap_set_fastboot_userdata_size(void)
{
}
#endif /* CONFIG_FASTBOOT_FLASH_MMC_DEV */
void omap_set_fastboot_vars(void)
{
omap_set_fastboot_cpu();
omap_set_fastboot_secure();
omap_set_fastboot_board_rev();
omap_set_fastboot_userdata_size();
}
#endif /* CONFIG_FASTBOOT_FLASH */

/*
* Cancel out the denominator and numerator of a fraction
* to get smaller numerator and denominator.