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common/memsize.c: prepare get_ram_size update

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Save the content of the base address in a new variable
in stack (save_base) to prepare restore this content.

This patch don't modified code behavior and stack usage.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2018-01-25 18:07:45 +01:00 • committed by Tom Rini
parent 79717c8047
commit c5da05cd41
1 changed files with 4 additions and 3 deletions
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7
common/memsize.c
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@ -27,7 +27,8 @@ DECLARE_GLOBAL_DATA_PTR;
long get_ram_size(long *base, long maxsize) long get_ram_size(long *base, long maxsize)
{ {
volatile long *addr; volatile long *addr;
long save[32]; long save[31];
long save_base;
long cnt; long cnt;
long val; long val;
long size; long size;
@ -43,7 +44,7 @@ long get_ram_size(long *base, long maxsize)
addr = base; addr = base;
sync(); sync();
save[i] = *addr; save_base = *addr;
sync(); sync();
*addr = 0; *addr = 0;
@ -51,7 +52,7 @@ long get_ram_size(long *base, long maxsize)
if ((val = *addr) != 0) { if ((val = *addr) != 0) {
/* Restore the original data before leaving the function. */ /* Restore the original data before leaving the function. */
sync(); sync();
*addr = save[i]; *base = save_base;
for (cnt = 1; cnt < maxsize / sizeof(long); cnt <<= 1) { for (cnt = 1; cnt < maxsize / sizeof(long); cnt <<= 1) {
addr = base + cnt; addr = base + cnt;
sync(); sync();