xref: /openbmc/u-boot/arch/x86/cpu/quark/hte.h (revision e8f80a5a)
1 /* SPDX-License-Identifier: Intel */
2 /*
3  * Copyright (C) 2013, Intel Corporation
4  * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
5  *
6  * Ported from Intel released Quark UEFI BIOS
7  * QuarkSocPkg/QuarkNorthCluster/MemoryInit/Pei
8  */
9 
10 #ifndef _HTE_H_
11 #define _HTE_H_
12 
13 enum {
14 	MRC_MEM_INIT,
15 	MRC_MEM_TEST
16 };
17 
18 enum {
19 	READ_TRAIN,
20 	WRITE_TRAIN
21 };
22 
23 /*
24  * EXP_LOOP_CNT field of HTE_CMD_CTL
25  *
26  * This CANNOT be less than 4!
27  */
28 #define HTE_LOOP_CNT		5
29 
30 /* random seed for victim */
31 #define HTE_LFSR_VICTIM_SEED	0xf294ba21
32 
33 /* random seed for aggressor */
34 #define HTE_LFSR_AGRESSOR_SEED	0xeba7492d
35 
36 u32 hte_mem_init(struct mrc_params *mrc_params, u8 flag);
37 u16 hte_basic_write_read(struct mrc_params *mrc_params, u32 addr,
38 			 u8 first_run, u8 mode);
39 u16 hte_write_stress_bit_lanes(struct mrc_params *mrc_params,
40 			       u32 addr, u8 first_run);
41 void hte_mem_op(u32 addr, u8 first_run, u8 is_write);
42 
43 #endif /* _HTE_H_ */
44