LibreELEC 系统内存

Chip Platform Rockchip
1

我买的是2G内存的版本为什么看到的系统内存是1G这个怎么调整
LibreELEC:/etc # free
total used free shared buffers cached
Mem: 947292 363652 583640 35672 44428 170232
-/+ buffers/cache: 148992 798300
Swap: 0 0 0

2

我看到我 DDR芯片上 都是1G一片的 总共两片
以前玩的linux是可以在uboot的 cmdline 里面指定 内存大小
但是我用的这个系统没有呀

root=/dev/ram0 rdinit=/init BOOT_IMAGE=/Image usbcore.autosuspend=-1 rockchip_jtag earlyprintk=uart8250-32bit,0xff130000 boot=UUID=2003-1555 disk=UUID=c002a273-7c3e-4fea-ac8c-248124873d69 quiet console=uart8250,mmio32,0xff130000 console=tty0

3

diff --git a/arch/arm/mach-rockchip/sdram_common.c b/arch/arm/mach-rockchip/sdram_common.c
index 76dbdc8..5233e7f 100644
— a/arch/arm/mach-rockchip/sdram_common.c
+++ b/arch/arm/mach-rockchip/sdram_common.c
@@ -14,7 +14,7 @@
DECLARE_GLOBAL_DATA_PTR;
size_t rockchip_sdram_size(phys_addr_t reg)
{

  •   u32 rank, col, bk, cs0_row, cs1_row, bw, row_3_4;

  •   u32 rank, col, bk, cs0_row, cs1_row, bw, row_3_4, dbw, bg;
  size_t chipsize_mb = 0;
  size_t size_mb = 0;
  u32 ch;

@@ -37,16 +37,19 @@ size_t rockchip_sdram_size(phys_addr_t reg)
SYS_REG_BW_MASK));
row_3_4 = sys_reg >> SYS_REG_ROW_3_4_SHIFT(ch) &
SYS_REG_ROW_3_4_MASK;

  •           dbw = sys_reg >> SYS_REG_DBW_SHIFT(ch) & SYS_REG_DBW_MASK;

  •           /* only used by DDR4 */

  •           bg = (dbw == 1) ? 1 : 2;

  •           chipsize_mb = (1 << (cs0_row + col + bk + bw - 20));

  •           chipsize_mb = (1 << (cs0_row + col + bg + 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;

  •           debug("rank %d col %d bk %d cs0_row %d bw %d row_3_4 %d\n",

  •                 rank, col, bk, cs0_row, bw, row_3_4);

  •           debug("rank %d col %d bk %d cs0_row %d bw %d row_3_4 %d dbw %d\n",

  •                 rank, col, bk, cs0_row, bw, row_3_4, dbw);
  }

  return (size_t)size_mb << 20;

uboot 打上补丁

4

zouxf 发表于 2018-5-21 11:37
内存大小是kernel自动识别的。

请问显存要如何调整呢？