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cmd: Add mydbg command (A83T SoC debugging helpers)

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This can be used to dump various registers and do other kinds of
mischief when developing drivers.

Signed-off-by: Ondrej Jirman <megous@megous.com>
This commit is contained in:
Ondrej Jirman
2018-07-09 08:03:38 +02:00
parent b57528c31f
commit cfeb11cb86
3 changed files with 116 additions and 0 deletions
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7
cmd/Kconfig
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@@ -1181,6 +1181,13 @@ config CMD_MTD
help
MTD commands support.
config CMD_MYDBG
bool "mydbg - My custom debugging command"
depends on MACH_SUN8I_A83T
help
Nothing to see here, just an easy to access temporary debugging
command for development.
config CMD_NAND
bool "nand"
default y if NAND_SUNXI

1
cmd/Makefile
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@@ -103,6 +103,7 @@ obj-$(CONFIG_CMD_CLONE) += clone.o
ifneq ($(CONFIG_CMD_NAND)$(CONFIG_CMD_SF),)
obj-y += legacy-mtd-utils.o
endif
obj-$(CONFIG_CMD_MYDBG) += mydbg.o
obj-$(CONFIG_CMD_NAND) += nand.o
obj-$(CONFIG_CMD_NET) += net.o
obj-$(CONFIG_CMD_NVEDIT_EFI) += nvedit_efi.o

108
cmd/mydbg.c Normal file
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@@ -0,0 +1,108 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Ondrej Jirman <megous@megous.com>
*/
#include <common.h>
#include <command.h>
#include <cli_hush.h>
#include <axp_pmic.h>
#include <asm/arch/pmic_bus.h>
#include <asm/io.h>
/* This is for A83T */
#define PIO_BASE 0x01C20800
#define TCON0_BASE 0x01c0C000
#define CCU_BASE 0x01C20000
#define DE2_BASE 0x01000000
#define DE2_MUX0_BASE (DE2_BASE + 0x100000)
#define DE2_MUX1_BASE (DE2_BASE + 0x200000)
#define PIO(n, a) readl(PIO_BASE + ((n) * 0x24 + a))
#define PWM_BASE 0x01C21400
#define TWI0_BASE 0x01c2ac00
#define MMC0_BASE 0x01c0f000
#define MMC1_BASE 0x01c10000
#define MMC2_BASE 0x01c11000
static void dump_regs(void)
{
int i;
/*
printf("PWM:\n");
for (i = 0; i < 2; i++) {
printf("0x%08x : %08x\n", PWM_BASE + i*4, readl(PWM_BASE + i*4));
}
printf("TCON0:\n");
for (i = 0; i <= 0x100; i++) {
printf("0x%08x : %08x\n", TCON0_BASE + i*4, readl(TCON0_BASE + i*4));
}
printf("DE2:\n");
for (i = 0; i <= 0x100; i++) {
printf("0x%08x : %08x\n", DE2_BASE + i*4, readl(DE2_BASE + i*4));
}
printf("DE2 MIX:\n");
for (i = 0; i <= 0x100; i++) {
printf("0x%08x : %08x\n", DE2_BASE + 0x100000 + i*4, readl(DE2_BASE + 0x100000 + i*4));
}
printf("TWI0:\n");
for (i = 0; i <= 32; i++) {
printf("0x%08x : %08x\n", TWI0_BASE + i*4, readl(TWI0_BASE + i*4));
}
*/
printf("CCU:\n");
// for (i = 0; i <= 0x100; i++) {
for (i = 34; i <= 36; i++) {
printf("0x%08x : %08x\n", CCU_BASE + i*4, readl(CCU_BASE + i*4));
}
printf("MMC0:\n");
for (i = 0; i <= 67; i++) {
printf("0x%08x : %08x\n", MMC0_BASE + i*4, readl(MMC0_BASE + i*4));
}
printf("MMC1:\n");
for (i = 0; i <= 67; i++) {
printf("0x%08x : %08x\n", MMC1_BASE + i*4, readl(MMC1_BASE + i*4));
}
printf("MMC2:\n");
for (i = 0; i <= 67; i++) {
printf("0x%08x : %08x\n", MMC2_BASE + i*4, readl(MMC2_BASE + i*4));
}
/*
for (i = 1; i <= 7; i++) {
printf("P%c_CFG0 = %08x\n", 'A' + i, PIO(i, 0x00));
printf("P%c_CFG1 = %08x\n", 'A' + i, PIO(i, 0x04));
printf("P%c_CFG2 = %08x\n", 'A' + i, PIO(i, 0x08));
printf("P%c_CFG3 = %08x\n", 'A' + i, PIO(i, 0x0c));
printf("P%c_DAT = %08x\n", 'A' + i, PIO(i, 0x10));
printf("P%c_DRV0 = %08x\n", 'A' + i, PIO(i, 0x14));
printf("P%c_DRV1 = %08x\n", 'A' + i, PIO(i, 0x18));
printf("P%c_PUL0 = %08x\n", 'A' + i, PIO(i, 0x1c));
printf("P%c_PUL1 = %08x\n", 'A' + i, PIO(i, 0x20));
}
printf("PMIC:\n");
for (i = 0; i < 256; i++) {
u8 val;
int ret = pmic_bus_read(i, &val);
if (!ret)
printf("%02x = %02x\n", i, (unsigned int)val);
}
*/
}
static int do_mydbg(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
dump_regs();
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(mydbg, 3, 1, do_mydbg, "mydbg", "mydbg - show some debug values");