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arc: emsdp: Refactor register and bit accesses

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Instead of "base + offset" define all registers right away
and access them later via direct defines.

Generate bit masks with "BIT" macro.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
This commit is contained in:
Alexey Brodkin 2018-11-27 09:47:00 +03:00 committed by Alexey Brodkin
parent 4e86c7e3cd
commit fb9a46a2ab
1 changed files with 9 additions and 9 deletions
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18
board/synopsys/emsdp/emsdp.c
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@ -78,31 +78,31 @@ int board_mmc_getcd(struct mmc *mmc)
}
#define CREG_BASE 0xF0001000
#define CREG_BOOT_OFFSET 0
#define CREG_BOOT_WP_OFFSET 8
#define CREG_BOOT (void *)(CREG_BASE + 0x0FF0)
#define CREG_IP_SW_RESET (void *)(CREG_BASE + 0x0FF0)
#define CGU_BASE 0xF0000000
#define CGU_IP_SW_RESET 0x0FF0
/* Bits in CREG_BOOT register */
#define CREG_BOOT_WP_BIT BIT(8)
void reset_cpu(ulong addr)
{
writel(1, (u32 *)(CGU_BASE + CGU_IP_SW_RESET));
writel(1, CREG_IP_SW_RESET);
while (1)
; /* loop forever till reset */
}
static int do_emsdp_rom(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
u32 creg_boot = readl((u32 *)(CREG_BASE + CREG_BOOT_OFFSET));
u32 creg_boot = readl(CREG_BOOT);
if (!strcmp(argv[1], "unlock"))
creg_boot &= ~BIT(CREG_BOOT_WP_OFFSET);
creg_boot &= ~CREG_BOOT_WP_BIT;
else if (!strcmp(argv[1], "lock"))
creg_boot |= BIT(CREG_BOOT_WP_OFFSET);
creg_boot |= CREG_BOOT_WP_BIT;
else
return CMD_RET_USAGE;
writel(creg_boot, (u32 *)(CREG_BASE + CREG_BOOT_OFFSET));
writel(creg_boot, CREG_BOOT);
return CMD_RET_SUCCESS;
}