Decoupling Architectural-specific Code (#35)

[lunaix-os.git] / lunaix-os / hal / rng / rngx86.c

diff --git a/lunaix-os/hal/rng/rngx86.c b/lunaix-os/hal/rng/rngx86.c
deleted file mode 100644 (file)
index b108740..0000000
--- a/lunaix-os/hal/rng/rngx86.c
+++ /dev/null
@@ -1,56 +0,0 @@
-#include <lunaix/device.h>
-#include <lunaix/mm/pagetable.h>
-
-#include <klibc/string.h>
-
-static inline void
-rng_fill(void* data, size_t len)
-{
-    asm volatile("1:\n"
-                 "rdrand %%eax\n"
-                 "movl %%eax, (%0)\n"
-                 "addl $4, %%eax\n"
-                 "subl $4, %1\n"
-                 "jnz 1b" ::"r"((ptr_t)data),
-                 "r"((len & ~0x3))
-                 : "%eax");
-}
-
-static int
-__rand_rd_pg(struct device* dev, void* buf, size_t offset)
-{
-    rng_fill(buf, PAGE_SIZE);
-    return PAGE_SIZE;
-}
-
-static int
-__rand_rd(struct device* dev, void* buf, size_t offset, size_t len)
-{
-    if (unlikely(len < 4)) {
-        int tmp_buf = 0;
-        rng_fill(&tmp_buf, 4);
-        memcpy(buf, &tmp_buf, len);
-    } else {
-        rng_fill(buf, len);
-    }
-    return len;
-}
-
-int
-pdev_randdev_init(struct device_def* devdef)
-{
-    // FIXME add check on cpuid for presence of rdrand
-    struct device* devrand = device_allocseq(NULL, NULL);
-    devrand->ops.read = __rand_rd;
-    devrand->ops.read_page = __rand_rd_pg;
-
-    register_device(devrand, &devdef->class, "rand");
-
-    return 0;
-}
-
-static struct device_def devrandx86_def = {
-    .name = "x86 On-Chip RNG",
-    .class = DEVCLASS(DEVIF_SOC, DEVFN_CHAR, DEV_RNG),
-    .init = pdev_randdev_init};
-EXPORT_DEVICE(randdev, &devrandx86_def, load_onboot);
\ No newline at end of file