X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=doc%2FREADME.b4860qds;h=889c8a984293473318ca61acd0f2c39d94cafe10;hb=2f03968e6c4b9da481fbb2fa1e6ee484681396e6;hp=f8a79dbb25c4d941fbca2870b20ee866a52cec5d;hpb=e97f9d817e600cd6f43d1d0da76f5787e33a5c56;p=oweals%2Fu-boot.git

diff --git a/doc/README.b4860qds b/doc/README.b4860qds
index f8a79dbb25..889c8a9842 100644
--- 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
@@ -227,17 +227,17 @@ 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	0xEFF3FFFF	rootfs (alternate bank)		12MB + 256KB
+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	0xEDF3FFFF	rootfs (current bank)		12MB+256MB
+0xED300000	0xEDEFFFFF	rootfs (current bank)		12MB
 0xEC800000	0xEC8FFFFF	device tree (current bank)	1MB
 0xEC020000	0xEC6FFFFF	Linux.uImage (current bank)	6MB+896KB
 0xEC000000	0xEC01FFFF	RCW (current bank)		128KB
@@ -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