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imx: imx8qm/qxp: Fix issue in get_effective_memsize

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When Trusty OS allocates the mem region from 0xfe0000000-0xffffffff,
the get_effective_memsize does not return correct memory size.
There is a check in get_effective_memsize to find the memreg where
the u-boot is running, and return the size of that memreg as the result
of get_effective_memsize. When using aligned start, the value is
0x80200000 since it is 2MB aligned. Thus the finding of memreg will
fail and return the PHYS_SDRAM_1_SIZE because u-boot text base is
0x80020000. This cause u-boot is relocated to the high memory where has
been occupied by Trusty OS.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Ye Li 2020-05-05 20:28:38 +08:00 committed by Stefano Babic
parent f44afd546f
commit 7c351ff5e0
1 changed files with 3 additions and 3 deletions
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6
arch/arm/mach-imx/imx8/cpu.c
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@ -223,7 +223,7 @@ static int get_owned_memreg(sc_rm_mr_t mr, sc_faddr_t *addr_start,
phys_size_t get_effective_memsize(void)
{
sc_rm_mr_t mr;
sc_faddr_t start, end, end1;
sc_faddr_t start, end, end1, start_aligned;
int err;
end1 = (sc_faddr_t)PHYS_SDRAM_1 + PHYS_SDRAM_1_SIZE;
@ -231,9 +231,9 @@ phys_size_t get_effective_memsize(void)
for (mr = 0; mr < 64; mr++) {
err = get_owned_memreg(mr, &start, &end);
if (!err) {
start = roundup(start, MEMSTART_ALIGNMENT);
start_aligned = roundup(start, MEMSTART_ALIGNMENT);
/* Too small memory region, not use it */
if (start > end)
if (start_aligned > end)
continue;
/* Find the memory region runs the U-Boot */