1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/*
* SPAPR machine hooks to Virtual Open Firmware,
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/ppc/spapr.h"
#include "hw/ppc/spapr_vio.h"
#include "hw/ppc/spapr_cpu_core.h"
#include "hw/ppc/fdt.h"
#include "hw/ppc/vof.h"
#include "sysemu/sysemu.h"
#include "qom/qom-qobject.h"
#include "trace.h"
target_ulong spapr_h_vof_client(PowerPCCPU *cpu, SpaprMachineState *spapr,
target_ulong opcode, target_ulong *_args)
{
int ret = vof_client_call(MACHINE(spapr), spapr->vof, spapr->fdt_blob,
ppc64_phys_to_real(_args[0]));
if (ret) {
return H_PARAMETER;
}
return H_SUCCESS;
}
void spapr_vof_client_dt_finalize(SpaprMachineState *spapr, void *fdt)
{
g_autofree char *stdout_path = spapr_vio_stdout_path(spapr->vio_bus);
vof_build_dt(fdt, spapr->vof);
if (spapr->vof->bootargs) {
int chosen;
_FDT(chosen = fdt_path_offset(fdt, "/chosen"));
/*
* If the client did not change "bootargs", spapr_dt_chosen() must have
* stored machine->kernel_cmdline in it before getting here.
*/
_FDT(fdt_setprop_string(fdt, chosen, "bootargs", spapr->vof->bootargs));
}
/*
* SLOF-less setup requires an open instance of stdout for early
* kernel printk. By now all phandles are settled so we can open
* the default serial console.
*/
if (stdout_path) {
_FDT(vof_client_open_store(fdt, spapr->vof, "/chosen", "stdout",
stdout_path));
}
}
void spapr_vof_reset(SpaprMachineState *spapr, void *fdt, Error **errp)
{
target_ulong stack_ptr;
Vof *vof = spapr->vof;
PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu);
vof_init(vof, spapr->rma_size, errp);
stack_ptr = vof_claim(vof, 0, VOF_STACK_SIZE, VOF_STACK_SIZE);
if (stack_ptr == -1) {
error_setg(errp, "Memory allocation for stack failed");
return;
}
/* Stack grows downwards plus reserve space for the minimum stack frame */
stack_ptr += VOF_STACK_SIZE - 0x20;
if (spapr->kernel_size &&
vof_claim(vof, spapr->kernel_addr, spapr->kernel_size, 0) == -1) {
error_setg(errp, "Memory for kernel is in use");
return;
}
if (spapr->initrd_size &&
vof_claim(vof, spapr->initrd_base, spapr->initrd_size, 0) == -1) {
error_setg(errp, "Memory for initramdisk is in use");
return;
}
spapr_vof_client_dt_finalize(spapr, fdt);
spapr_cpu_set_entry_state(first_ppc_cpu, SPAPR_ENTRY_POINT,
stack_ptr, spapr->initrd_base,
spapr->initrd_size);
/*
* At this point the expected allocation map is:
*
* 0..c38 - the initial firmware
* 8000..10000 - stack
* 400000.. - kernel
* 3ea0000.. - initramdisk
*
* We skip writing FDT as nothing expects it; OF client interface is
* going to be used for reading the device tree.
*/
}
void spapr_vof_quiesce(MachineState *ms)
{
SpaprMachineState *spapr = SPAPR_MACHINE(ms);
spapr->fdt_size = fdt_totalsize(spapr->fdt_blob);
spapr->fdt_initial_size = spapr->fdt_size;
}
bool spapr_vof_setprop(MachineState *ms, const char *path, const char *propname,
void *val, int vallen)
{
SpaprMachineState *spapr = SPAPR_MACHINE(ms);
/*
* We only allow changing properties which we know how to update in QEMU
* OR
* the ones which we know that they need to survive during "quiesce".
*/
if (strcmp(path, "/rtas") == 0) {
if (strcmp(propname, "linux,rtas-base") == 0 ||
strcmp(propname, "linux,rtas-entry") == 0) {
/* These need to survive quiesce so let them store in the FDT */
return true;
}
}
if (strcmp(path, "/chosen") == 0) {
if (strcmp(propname, "bootargs") == 0) {
Vof *vof = spapr->vof;
g_free(vof->bootargs);
vof->bootargs = g_strndup(val, vallen);
return true;
}
if (strcmp(propname, "linux,initrd-start") == 0) {
if (vallen == sizeof(uint32_t)) {
spapr->initrd_base = ldl_be_p(val);
return true;
}
if (vallen == sizeof(uint64_t)) {
spapr->initrd_base = ldq_be_p(val);
return true;
}
return false;
}
if (strcmp(propname, "linux,initrd-end") == 0) {
if (vallen == sizeof(uint32_t)) {
spapr->initrd_size = ldl_be_p(val) - spapr->initrd_base;
return true;
}
if (vallen == sizeof(uint64_t)) {
spapr->initrd_size = ldq_be_p(val) - spapr->initrd_base;
return true;
}
return false;
}
}
return true;
}
|
