Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 2 | /* |
| 3 | * (C) Copyright 2011-2012 Freescale Semiconductor, Inc. |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | /* #define DEBUG */ |
| 7 | |
| 8 | #include <common.h> |
| 9 | #include <command.h> |
Simon Glass | 9d1f619 | 2019-08-02 09:44:25 -0600 | [diff] [blame] | 10 | #include <env_internal.h> |
Simon Glass | 3ba929a | 2020-10-30 21:38:53 -0600 | [diff] [blame] | 11 | #include <asm/global_data.h> |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 12 | #include <linux/stddef.h> |
Simon Glass | 48b6c6b | 2019-11-14 12:57:16 -0700 | [diff] [blame] | 13 | #include <u-boot/crc.h> |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 14 | |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 15 | #ifdef ENV_IS_EMBEDDED |
Rasmus Villemoes | 5d18fc1 | 2020-02-18 08:54:09 +0000 | [diff] [blame] | 16 | static env_t *env_ptr = &environment; |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 17 | #else /* ! ENV_IS_EMBEDDED */ |
Rasmus Villemoes | 5d18fc1 | 2020-02-18 08:54:09 +0000 | [diff] [blame] | 18 | static env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR; |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 19 | #endif /* ENV_IS_EMBEDDED */ |
| 20 | |
| 21 | DECLARE_GLOBAL_DATA_PTR; |
| 22 | |
Simon Glass | 082af92 | 2017-08-03 12:22:01 -0600 | [diff] [blame] | 23 | static int env_remote_init(void) |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 24 | { |
| 25 | if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) { |
| 26 | gd->env_addr = (ulong)&(env_ptr->data); |
Simon Glass | 4bc2ad2 | 2017-08-03 12:21:56 -0600 | [diff] [blame] | 27 | gd->env_valid = ENV_VALID; |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 28 | return 0; |
| 29 | } |
| 30 | |
Simon Glass | d40d804 | 2017-08-03 12:22:02 -0600 | [diff] [blame] | 31 | return -ENOENT; |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 32 | } |
| 33 | |
| 34 | #ifdef CONFIG_CMD_SAVEENV |
Simon Glass | 082af92 | 2017-08-03 12:22:01 -0600 | [diff] [blame] | 35 | static int env_remote_save(void) |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 36 | { |
Liu Gang | b4611ee | 2012-08-09 05:10:03 +0000 | [diff] [blame] | 37 | #ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE |
| 38 | printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n"); |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 39 | return 1; |
| 40 | #else |
| 41 | return 0; |
| 42 | #endif |
| 43 | } |
| 44 | #endif /* CONFIG_CMD_SAVEENV */ |
| 45 | |
Simon Glass | 9977849 | 2017-08-03 12:22:17 -0600 | [diff] [blame] | 46 | static int env_remote_load(void) |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 47 | { |
| 48 | #ifndef ENV_IS_EMBEDDED |
Marek Vasut | dfe4b7e | 2020-07-07 20:51:35 +0200 | [diff] [blame] | 49 | return env_import((char *)env_ptr, 1, H_EXTERNAL); |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 50 | #endif |
Simon Glass | 9977849 | 2017-08-03 12:22:17 -0600 | [diff] [blame] | 51 | |
| 52 | return 0; |
Liu Gang | 85bcd73 | 2012-03-08 00:33:20 +0000 | [diff] [blame] | 53 | } |
Simon Glass | c10a88e | 2017-08-03 12:21:58 -0600 | [diff] [blame] | 54 | |
| 55 | U_BOOT_ENV_LOCATION(remote) = { |
| 56 | .location = ENVL_REMOTE, |
Simon Glass | d8273ed | 2017-08-03 12:22:03 -0600 | [diff] [blame] | 57 | ENV_NAME("Remote") |
Simon Glass | 082af92 | 2017-08-03 12:22:01 -0600 | [diff] [blame] | 58 | .load = env_remote_load, |
| 59 | .save = env_save_ptr(env_remote_save), |
| 60 | .init = env_remote_init, |
Simon Glass | c10a88e | 2017-08-03 12:21:58 -0600 | [diff] [blame] | 61 | }; |