Merge branch 'master' of git://git.denx.de/u-boot-spi

[J-u-boot.git] / doc / README.b4860qds

diff --git a/doc/README.b4860qds b/doc/README.b4860qds
index 3da77d9f0f83a000e1676cf00d11c553cc4ed046..889c8a984293473318ca61acd0f2c39d94cafe10 100644 (file)
--- a/doc/README.b4860qds
+++ b/doc/README.b4860qds
@@ -119,7 +119,7 @@ B4860QDS Default Settings
 Switch Settings
 ----------------
 
-SW1    OFF [0] OFF [1] OFF [1] OFF [0] OFF [1] OFF [0] OFF [1] OFF [1]
+SW1    OFF [0] OFF [0] OFF [0] OFF [0] OFF [0] OFF [0] OFF [0] OFF [0]
 SW2    ON      ON      ON      ON      ON      ON      OFF     OFF
 SW3    OFF     OFF     OFF     ON      OFF     OFF     ON      OFF
 SW5    OFF     OFF     OFF     OFF     OFF     OFF     ON      ON
@@ -227,15 +227,15 @@ Start Address     End Address     Description     Size
 NOR Flash memory Map on B4860 and B4420QDS
 ------------------------------------------
  Start          End            Definition                      Size
-0xEFF40000     0xEFFFFFFF      u-boot (current bank)           768KB
-0xEFF20000     0xEFF3FFFF      u-boot env (current bank)       128KB
+0xEFF40000     0xEFFFFFFF      U-Boot (current bank)           768KB
+0xEFF20000     0xEFF3FFFF      U-Boot env (current bank)       128KB
 0xEFF00000     0xEFF1FFFF      FMAN Ucode (current bank)       128KB
 0xEF300000     0xEFEFFFFF      rootfs (alternate bank)         12MB
 0xEE800000     0xEE8FFFFF      device tree (alternate bank)    1MB
 0xEE020000     0xEE6FFFFF      Linux.uImage (alternate bank)   6MB+896KB
 0xEE000000     0xEE01FFFF      RCW (alternate bank)            128KB
-0xEDF40000     0xEDFFFFFF      u-boot (alternate bank)         768KB
-0xEDF20000     0xEDF3FFFF      u-boot env (alternate bank)     128KB
+0xEDF40000     0xEDFFFFFF      U-Boot (alternate bank)         768KB
+0xEDF20000     0xEDF3FFFF      U-Boot env (alternate bank)     128KB
 0xEDF00000     0xEDF1FFFF      FMAN ucode (alternate bank)     128KB
 0xED300000     0xEDEFFFFF      rootfs (current bank)           12MB
 0xEC800000     0xEC8FFFFF      device tree (current bank)      1MB
@@ -246,7 +246,7 @@ Various Software configurations/environment variables/commands
 --------------------------------------------------------------
 The below commands apply to both B4860QDS and B4420QDS.
 
-1. U-boot environment variable hwconfig
+1. U-Boot environment variable hwconfig
    The default hwconfig is:
        hwconfig=fsl_ddr:ctlr_intlv=null,bank_intlv=cs0_cs1;usb1:
                                        dr_mode=host,phy_type=ulpi
@@ -267,7 +267,7 @@ The below commands apply to both B4860QDS and B4420QDS.
 4. To change personality of board
    For changing personality from B4860 to B4420
        1)Boot from vbank0
-       2)Flash vbank2 with b4420 rcw and u-boot
+       2)Flash vbank2 with b4420 rcw and U-Boot
        3)Give following commands to uboot prompt
           => mw.b ffdf0040 0x30;
           => mw.b ffdf0010 0x00;
@@ -309,7 +309,7 @@ The below commands apply to both B4860QDS and B4420QDS.
 
    When using [DEFAULT] RCW, which including 2 * 1G SGMII on board and 2 * 1G
    SGMII on SGMII riser card.
-   Under U-boot these network interfaces are recognized as:
+   Under U-Boot these network interfaces are recognized as:
    FM1@DTSEC3, FM1@DTSEC4, FM1@DTSEC5 and FM1@DTSEC6.
 
    On Linux the interfaces are renamed as:
@@ -322,9 +322,45 @@ The below commands apply to both B4860QDS and B4420QDS.
    Serdes protocosl tested:
    0x18, 0x9e (serdes1, serdes2)
 
-   Under U-boot these network interfaces are recognized as:
+   Under U-Boot these network interfaces are recognized as:
    FM1@DTSEC3, FM1@DTSEC4 and  e1000#0.
 
    On Linux the interfaces are renamed as:
        . eth2 -> fm1-gb2
        . eth3 -> fm1-gb3
+
+NAND boot with 2 Stage boot loader
+----------------------------------
+PBL initialise the internal SRAM and copy SPL(160KB) in SRAM.
+SPL further initialise DDR using SPD and environment variables and copy
+U-Boot(768 KB) from flash to DDR.
+Finally SPL transer control to U-Boot for futher booting.
+
+SPL has following features:
+ - Executes within 256K
+ - No relocation required
+
+ Run time view of SPL framework during  boot :-
+ -----------------------------------------------
+ Area        | Address                         |
+-----------------------------------------------
+ Secure boot | 0xFFFC0000 (32KB)               |
+ headers     |                                 |
+ -----------------------------------------------
+ GD, BD      | 0xFFFC8000 (4KB)                |
+ -----------------------------------------------
+ ENV         | 0xFFFC9000 (8KB)                |
+ -----------------------------------------------
+ HEAP        | 0xFFFCB000 (30KB)               |
+ -----------------------------------------------
+ STACK       | 0xFFFD8000 (22KB)               |
+ -----------------------------------------------
+ U-Boot SPL  | 0xFFFD8000 (160KB)              |
+ -----------------------------------------------
+
+NAND Flash memory Map on B4860 and B4420QDS
+------------------------------------------
+ Start          End            Definition                      Size
+0x000000       0x0FFFFF        U-Boot                          1MB
+0x140000       0x15FFFF        U-Boot env                      128KB
+0x1A0000       0x1BFFFF        FMAN Ucode                      128KB