diff options
Diffstat (limited to 'src/boot/elfboot.c')
| -rw-r--r-- | src/boot/elfboot.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/src/boot/elfboot.c b/src/boot/elfboot.c index 072811918d..0bd233a1f5 100644 --- a/src/boot/elfboot.c +++ b/src/boot/elfboot.c @@ -9,6 +9,22 @@ #include <stdlib.h> #include <string.h> +static inline uint64_t unpack_lb64(struct lb_uint64 value) +{ + uint64_t result; + result = value.hi; + result = (result << 32) + value.lo; + return result; +} + +static inline struct lb_uint64 pack_lb64(uint64_t value) +{ + struct lb_uint64 result; + result.lo = (value >> 0) & 0xffffffff; + result.hi = (value >> 32) & 0xffffffff; + return result; +} + /* Maximum physical address we can use for the linuxBIOS bounce buffer. */ #ifndef MAX_ADDR @@ -120,14 +136,14 @@ static unsigned long get_bounce_buffer(struct lb_memory *mem) unsigned long tbuffer; if (mem->map[i].type != LB_MEM_RAM) continue; - if (mem->map[i].start > MAX_ADDR) + if (unpack_lb64(mem->map[i].start) > MAX_ADDR) continue; - if (mem->map[i].size < lb_size) + if (unpack_lb64(mem->map[i].size) < lb_size) continue; - mstart = mem->map[i].start; + mstart = unpack_lb64(mem->map[i].start); msize = MAX_ADDR - mstart +1; - if (msize > mem->map[i].size) - msize = mem->map[i].size; + if (msize > unpack_lb64(mem->map[i].size)) + msize = unpack_lb64(mem->map[i].size); mend = mstart + msize; tbuffer = mend - lb_size; if (tbuffer < buffer) @@ -222,8 +238,8 @@ static int valid_area(struct lb_memory *mem, unsigned long buffer, uint64_t mstart, mend; uint32_t mtype; mtype = mem->map[i].type; - mstart = mem->map[i].start; - mend = mstart + mem->map[i].size; + mstart = unpack_lb64(mem->map[i].start); + mend = mstart + unpack_lb64(mem->map[i].size); if ((mtype == LB_MEM_RAM) && (start < mend) && (end > mstart)) { break; } @@ -236,8 +252,8 @@ static int valid_area(struct lb_memory *mem, unsigned long buffer, uint64_t mstart, mend; uint32_t mtype; mtype = mem->map[i].type; - mstart = mem->map[i].start; - mend = mstart + mem->map[i].size; + mstart = unpack_lb64(mem->map[i].start); + mend = mstart + unpack_lb64(mem->map[i].size); printk_err(" [0x%016lx, 0x%016lx) %s\n", (unsigned long)mstart, (unsigned long)mend, |