From: Bharat Kumar Reddy Gooty bharat.gooty@broadcom.com
By default relocation happens to a higher address of DDR, i.e, DDR start + DDR size.
U-Boot shall be used to collect the ramdump. Restrict U-Boot to use only the 16MB memory, so that this memory can be reserved. Limit relocation to happen within 16MB memory, start 0xFF00_0000 and end 0x1_0000_0000
Signed-off-by: Bharat Kumar Reddy Gooty bharat.gooty@broadcom.com Signed-off-by: Rayagonda Kokatanur rayagonda.kokatanur@broadcom.com Reviewed-by: Simon Glass sjg@chromium.org --- Changes from v3: -Address review comments from Simon, Update the commit message.
board/broadcom/bcmns3/ns3.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-)
diff --git a/board/broadcom/bcmns3/ns3.c b/board/broadcom/bcmns3/ns3.c index 418db67875..33e25376f2 100644 --- a/board/broadcom/bcmns3/ns3.c +++ b/board/broadcom/bcmns3/ns3.c @@ -141,6 +141,11 @@ static int mem_info_parse_fixup(void *fdt)
int board_init(void) { + /* Setup memory using "memory" node from DTB */ + if (fdtdec_setup_mem_size_base() != 0) + return -EINVAL; + fdtdec_setup_memory_banksize(); + if (bl33_info->version != BL33_INFO_VERSION) printf("*** warning: ATF BL31 and u-boot not in sync! ***\n");
@@ -154,19 +159,30 @@ int board_late_init(void)
int dram_init(void) { - if (fdtdec_setup_mem_size_base() != 0) - return -EINVAL; + /* + * Mark ram base as the last 16MB of 2GB DDR, which is 0xFF00_0000. + * So that relocation happens with in the last 16MB memory. + */ + gd->ram_base = (phys_size_t)(BCM_NS3_MEM_END - SZ_16M); + gd->ram_size = (unsigned long)SZ_16M;
return 0; }
int dram_init_banksize(void) { - fdtdec_setup_memory_banksize(); + gd->bd->bi_dram[0].start = (BCM_NS3_MEM_END - SZ_16M); + gd->bd->bi_dram[0].size = SZ_16M;
return 0; }
+/* Limit RAM used by U-Boot to the DDR first bank End region */ +ulong board_get_usable_ram_top(ulong total_size) +{ + return BCM_NS3_MEM_END; +} + void reset_cpu(ulong level) { #define L3_RESET 30