xref: /openbmc/u-boot/arch/x86/cpu/quark/hte.h (revision 72719d2f)
1 /*
2  * Copyright (C) 2013, Intel Corporation
3  * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
4  *
5  * Ported from Intel released Quark UEFI BIOS
6  * QuarkSocPkg/QuarkNorthCluster/MemoryInit/Pei
7  *
8  * SPDX-License-Identifier:	Intel
9  */
10 
11 #ifndef _HTE_H_
12 #define _HTE_H_
13 
14 enum {
15 	MRC_MEM_INIT,
16 	MRC_MEM_TEST
17 };
18 
19 enum {
20 	READ_TRAIN,
21 	WRITE_TRAIN
22 };
23 
24 /*
25  * EXP_LOOP_CNT field of HTE_CMD_CTL
26  *
27  * This CANNOT be less than 4!
28  */
29 #define HTE_LOOP_CNT		5
30 
31 /* random seed for victim */
32 #define HTE_LFSR_VICTIM_SEED	0xf294ba21
33 
34 /* random seed for aggressor */
35 #define HTE_LFSR_AGRESSOR_SEED	0xeba7492d
36 
37 u32 hte_mem_init(struct mrc_params *mrc_params, u8 flag);
38 u16 hte_basic_write_read(struct mrc_params *mrc_params, u32 addr,
39 			 u8 first_run, u8 mode);
40 u16 hte_write_stress_bit_lanes(struct mrc_params *mrc_params,
41 			       u32 addr, u8 first_run);
42 void hte_mem_op(u32 addr, u8 first_run, u8 is_write);
43 
44 #endif /* _HTE_H_ */
45