4  * SPDX-License-Identifier:	GPL-2.0+
25 	printf("Reg Valid Write-type   %-16s %-16s %-16s\n", "Base   ||",  in do_mtrr_list()
26 	       "Mask   ||", "Size   ||");  in do_mtrr_list()
29 		uint64_t base, mask, size;  in do_mtrr_list()  local
30 		bool valid;  in do_mtrr_list()  local
33 		mask = native_read_msr(MTRR_PHYS_MASK_MSR(i));  in do_mtrr_list()
34 		size = ~mask & ((1ULL << CONFIG_CPU_ADDR_BITS) - 1);  in do_mtrr_list()
35 		size |= (1 << 12) - 1;  in do_mtrr_list()
37 		valid = mask & MTRR_PHYS_MASK_VALID;  in do_mtrr_list()
39 		printf("%d   %-5s %-12s %016llx %016llx %016llx\n", i,  in do_mtrr_list()
40 		       valid ? "Y" : "N", type, base & ~MTRR_BASE_TYPE_MASK,  in do_mtrr_list()
41 		       mask & ~MTRR_PHYS_MASK_VALID, size);  in do_mtrr_list()
52 	uint64_t base, mask;  in do_mtrr_set()  local
53 	int i, type = -1;  in do_mtrr_set()
54 	bool valid;  in do_mtrr_set()  local
62 	if (type == -1) {  in do_mtrr_set()
70 	valid = native_read_msr(MTRR_PHYS_MASK_MSR(reg)) & MTRR_PHYS_MASK_VALID;  in do_mtrr_set()
71 	mask = ~((uint64_t)size - 1);  in do_mtrr_set()
72 	mask &= (1ULL << CONFIG_CPU_ADDR_BITS) - 1;  in do_mtrr_set()
73 	if (valid)  in do_mtrr_set()
74 		mask |= MTRR_PHYS_MASK_VALID;  in do_mtrr_set()
76 	printf("base=%llx, mask=%llx\n", base, mask);  in do_mtrr_set()
79 	wrmsrl(MTRR_PHYS_MASK_MSR(reg), mask);  in do_mtrr_set()
85 static int mtrr_set_valid(int reg, bool valid)  in mtrr_set_valid()  argument
88 	uint64_t mask;  in mtrr_set_valid()  local
91 	mask = native_read_msr(MTRR_PHYS_MASK_MSR(reg));  in mtrr_set_valid()
92 	if (valid)  in mtrr_set_valid()
93 		mask |= MTRR_PHYS_MASK_VALID;  in mtrr_set_valid()
95 		mask &= ~MTRR_PHYS_MASK_VALID;  in mtrr_set_valid()
96 	wrmsrl(MTRR_PHYS_MASK_MSR(reg), mask);  in mtrr_set_valid()
110 	argc -= 2;  in do_mtrr()
124 		return do_mtrr_set(reg, argc - 1, argv + 1);  in do_mtrr()
133 	"Use x86 memory type range registers (32-bit only)",
134 	"[list]        - list current registers\n"
135 	"set <reg> <type> <start> <size>   - set a register\n"
137 	"disable <reg>      - disable a register\n"
138 	"ensable <reg>      - enable a register"