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PPC: E500: Use generic kvm function for freq

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Now that we have generic KVM functions to read out the host tb and clock
frequencies, let's use them in the e500 code!

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2011-07-21 02:34:11 +02:00
parent eadaada1ce
commit 911d6e7ad1
1 changed files with 9 additions and 35 deletions
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44
hw/ppce500_mpc8544ds.c
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@ -14,8 +14,6 @@
* (at your option) any later version. * (at your option) any later version.
*/ */
#include <dirent.h>
#include "config.h" #include "config.h"
#include "qemu-common.h" #include "qemu-common.h"
#include "net.h" #include "net.h"
@ -96,6 +94,9 @@ static int mpc8544_load_device_tree(CPUState *env,
int fdt_size; int fdt_size;
void *fdt; void *fdt;
uint8_t hypercall[16]; uint8_t hypercall[16];
char cpu_name[128] = "/cpus/PowerPC,8544@0";
uint32_t clock_freq = 400000000;
uint32_t tb_freq = 400000000;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (!filename) { if (!filename) {
@ -133,32 +134,9 @@ static int mpc8544_load_device_tree(CPUState *env,
fprintf(stderr, "couldn't set /chosen/bootargs\n"); fprintf(stderr, "couldn't set /chosen/bootargs\n");
if (kvm_enabled()) { if (kvm_enabled()) {
struct dirent *dirp; /* Read out host's frequencies */
DIR *dp; clock_freq = kvmppc_get_clockfreq();
char buf[128]; tb_freq = kvmppc_get_tbfreq();
if ((dp = opendir("/proc/device-tree/cpus/")) == NULL) {
printf("Can't open directory /proc/device-tree/cpus/\n");
ret = -1;
goto out;
}
buf[0] = '\0';
while ((dirp = readdir(dp)) != NULL) {
if (strncmp(dirp->d_name, "PowerPC", 7) == 0) {
snprintf(buf, 128, "/cpus/%s", dirp->d_name);
break;
}
}
closedir(dp);
if (buf[0] == '\0') {
printf("Unknow host!\n");
ret = -1;
goto out;
}
mpc8544_copy_soc_cell(fdt, buf, "clock-frequency");
mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency");
/* indicate KVM hypercall interface */ /* indicate KVM hypercall interface */
qemu_devtree_setprop_string(fdt, "/hypervisor", "compatible", qemu_devtree_setprop_string(fdt, "/hypervisor", "compatible",
@ -166,15 +144,11 @@ static int mpc8544_load_device_tree(CPUState *env,
kvmppc_get_hypercall(env, hypercall, sizeof(hypercall)); kvmppc_get_hypercall(env, hypercall, sizeof(hypercall));
qemu_devtree_setprop(fdt, "/hypervisor", "hcall-instructions", qemu_devtree_setprop(fdt, "/hypervisor", "hcall-instructions",
hypercall, sizeof(hypercall)); hypercall, sizeof(hypercall));
} else {
const uint32_t freq = 400000000;
qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0",
"clock-frequency", freq);
qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0",
"timebase-frequency", freq);
} }
qemu_devtree_setprop_cell(fdt, cpu_name, "clock-frequency", clock_freq);
qemu_devtree_setprop_cell(fdt, cpu_name, "timebase-frequency", tb_freq);
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
g_free(fdt); g_free(fdt);