rockchip/rk3399: sdram: use register to calculate sdram sizes
We may support different sdram sizes on one board in future, so
we need to calculate sdram sizes from sdram drvier.
BRANCH=None
BUG=None
TEST=boot kevin
Change-Id: I43e8f164ecdb768c051464b4dbc7d890df8055d0
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 3c4d8b3cb647b2f9cebc416c298817c16d49330e
Original-Change-Id: I95d5ef34de9d79ebca3600dc7a4b9e14449606ff
Original-Signed-off-by: Lin Huang <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/411600
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/17629
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/soc/rockchip/rk3399/sdram.c b/src/soc/rockchip/rk3399/sdram.c
index d085e4c..e51cd89 100644
--- a/src/soc/rockchip/rk3399/sdram.c
+++ b/src/soc/rockchip/rk3399/sdram.c
@@ -1031,5 +1031,41 @@
size_t sdram_size_mb(void)
{
- return CONFIG_DRAM_SIZE_MB;
+ u32 rank, col, bk, cs0_row, cs1_row, bw, row_3_4;
+ size_t chipsize_mb = 0;
+ static size_t size_mb = 0;
+ u32 ch;
+
+ if (!size_mb) {
+ u32 sys_reg = read32(&rk3399_pmugrf->os_reg2);
+ u32 ch_num = SYS_REG_DEC_NUM_CH(sys_reg);
+
+ for (ch = 0; ch < ch_num; ch++) {
+ rank = SYS_REG_DEC_RANK(sys_reg, ch);
+ col = SYS_REG_DEC_COL(sys_reg, ch);
+ bk = SYS_REG_DEC_BK(sys_reg, ch);
+ cs0_row = SYS_REG_DEC_CS0_ROW(sys_reg, ch);
+ cs1_row = SYS_REG_DEC_CS1_ROW(sys_reg, ch);
+ bw = SYS_REG_DEC_BW(sys_reg, ch);
+ row_3_4 = SYS_REG_DEC_ROW_3_4(sys_reg, ch);
+
+ chipsize_mb = (1 << (cs0_row + col + bk + bw - 20));
+
+ if (rank > 1)
+ chipsize_mb += chipsize_mb >>
+ (cs0_row - cs1_row);
+ if (row_3_4)
+ chipsize_mb = chipsize_mb * 3 / 4;
+ size_mb += chipsize_mb;
+ }
+
+ /*
+ * we use the 0x00000000~0xf7ffffff space
+ * since 0xf8000000~0xffffffff is soc register space
+ * so we reserve it
+ */
+ size_mb = MIN(size_mb, 0xf8000000/MiB);
+ }
+
+ return size_mb;
}
diff --git a/src/soc/rockchip/rk3399/soc.c b/src/soc/rockchip/rk3399/soc.c
index e34ca09..4418a27 100644
--- a/src/soc/rockchip/rk3399/soc.c
+++ b/src/soc/rockchip/rk3399/soc.c
@@ -20,6 +20,7 @@
#include <soc/addressmap.h>
#include <soc/clock.h>
#include <soc/display.h>
+#include <soc/sdram.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
@@ -27,8 +28,7 @@
static void soc_read_resources(device_t dev)
{
- ram_resource(dev, 0, (uintptr_t)_dram / KiB,
- min(CONFIG_DRAM_SIZE_MB * KiB, MAX_DRAM_ADDRESS / KiB));
+ ram_resource(dev, 0, (uintptr_t)_dram / KiB, sdram_size_mb() * KiB);
}
static void soc_init(device_t dev)