diff options
| author | Jonas Karlman <jonas@kwiboo.se> | 2025-01-30 22:07:12 +0000 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2025-02-19 23:11:06 +0800 |
| commit | 356236126da7877ab115c65f8cb21215443beb2f (patch) | |
| tree | 4938af1bb8cdf72471ec6f8376febad757243eaa | |
| parent | 57ad1ed7e84ac36d3d838d8c1eba96f586995a42 (diff) | |
rockchip: sdram: Limit usable ram_top to max 4G
U-Boot only works correctly when it uses RAM below the 4G address
boundary on Rockchip SoCs. Limit usable gd->ram_top to max 4G.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
| -rw-r--r-- | arch/arm/mach-rockchip/sdram.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mach-rockchip/sdram.c b/arch/arm/mach-rockchip/sdram.c index 96a791bda2c..4b8b6b9da7c 100644 --- a/arch/arm/mach-rockchip/sdram.c +++ b/arch/arm/mach-rockchip/sdram.c @@ -487,7 +487,8 @@ int dram_init(void) phys_addr_t board_get_usable_ram_top(phys_size_t total_size) { - unsigned long top = CFG_SYS_SDRAM_BASE + SDRAM_MAX_SIZE; + /* Make sure U-Boot only uses the space below the 4G address boundary */ + u64 top = min_t(u64, CFG_SYS_SDRAM_BASE + SDRAM_MAX_SIZE, SZ_4G); return (gd->ram_top > top) ? top : gd->ram_top; } |