doc: Update rpi1/rpi2 documentation.

docs/develop/ports/arm/rpi1.md

@@ -27,35 +27,45 @@ The Raspberry Pi SD card generally uses the MBR file system layout below. Partit
 
 *  bootcode.bin : 2nd stage bootloader
 *  start.elf: The GPU binary firmware image
-*  haiku_loader: Haiku Loader
+*  config.txt: A configuration file read by the Pi to start u-boot.bin
-*  haiku-floppyboot.tgz: Compressed image with Haiku kernel
+*  u-boot.bin: u-boot loader for the Pi 2
-*  config.txt: A configuration file read by the GPU.
+*  bcm2835-rpi-b.dtb: FDT binary for the Raspberry Pi 2
+*  haiku_loader_linux.ub: Haiku Loader
+*  haiku-floppyboot.tgz.ub: Compressed initial ram image with Haiku kernel
 
 ### Optional Files
 
 *  vlls directory: Additional GPU code, e.g. extra codecs.
+*  uEnv.txt: u-boot configuration script to automate boot.
 
 # Compiling
 
-*  Create your work directory `mkdir generated.arm; cd generated.arm`
+*  Create your ARM work directory `mkdir generated.arm; cd generated.arm`
-*  Build an ARM toolchain using `../configure --build-cross-tools arm ../../buildtools`
+*  Build an ARM toolchain using `../configure --build-cross-tools arm ../../buildtools --target-board=rpi1`
-*  Build our loader using `jam -q -sHAIKU_BOOT_BOARD=raspberry_pi -sHAIKU_BOOT_PLATFORM=raspberrypi_arm haiku_loader`
+*  Build our loader using `jam -q haiku_loader_linux.ub`
-*  Build our file system using `jam -q -sHAIKU_BOOT_BOARD=raspberry_pi -sHAIKU_BOOT_PLATFORM=raspberrypi_arm haiku-floppyboot.tgz`
+*  Build our initial ram disk using `jam -q haiku-floppyboot.tgz.ub`
 
 # Booting
 
 1. SOC finds bootcode.bin
 2. bootcode.bin runs start.elf
-2. start.elf reads config.txt and cmdline.txt
+3. start.elf reads config.txt and start u-boot
-3. start.elf runs specified binary at specified address
+4. u-boot.bin starts the Haiku loader
+5. Haiku loader boots Haiku kernel
 
 ## config.txt Options
 
-    kernel=haiku_loader
+    kernel=u-boot.bin
-    kernel_address=0x0
+
-    disable_commandline_tags=1
+## u-boot startup
-    ramfsfile=haiku-floppyboot.tgz
+
-    ramfsaddr=0x04000000
+These will be condensed and automated long-term via uEnv.txt :-)
+
+* `fatload mmc 0 ${fdt_addr_r} bcm2836-rpi-2-b.dtb`
+* `fdt addr ${fdt_addr_r}`
+* `fatload mmc 0 ${ramdisk_addr_r} haiku-floppyboot.tgz.ub`
+* `fatload mmc 0 ${kernel_addr_r} haiku_loader_linux.ub`
+* `bootm ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}`
 
 # Additional Information
 

docs/develop/ports/arm/rpi2.md

@@ -0,0 +1,74 @@
+# Raspberry Pi 2
+* http://raspberrypi.org
+
+# Hardware Information
+
+* ARMv7 Architecture
+* Broadcom BCM2836 (SoC)
+  * Includes Quad ARM1176JZF-S CPU @ 900 MHz
+  * Includes VideoCore IV GPU
+* SD Card Storage
+* 1 GB RAM
+* Video Outputs
+  * HDMI Video Output
+  * Composite Video Output
+* Ethernet
+
+# Setting up the Haiku SD card
+
+The Raspberry Pi SD card generally uses the MBR file system layout below. Partition 1 is all that is required to boot an OS.
+
+*  partition 1 -- FAT32, bootable flag, type 'c'
+*  partition 2 -- BeFS, Haiku filesystem, type 'eb'
+
+## Boot Partition
+
+### Required Files
+
+*  bootcode.bin : 2nd stage bootloader
+*  start.elf: The GPU binary firmware image
+*  config.txt: A configuration file read by the Pi to start u-boot.bin
+*  u-boot.bin: u-boot loader for the Pi 2
+*  bcm2836-rpi-2-b.dtb: FDT binary for the Raspberry Pi 2
+*  haiku_loader_linux.ub: Haiku Loader
+*  haiku-floppyboot.tgz.ub: Compressed initial ram image with Haiku kernel
+
+### Optional Files
+
+*  vlls directory: Additional GPU code, e.g. extra codecs.
+*  uEnv.txt: u-boot configuration script to automate boot.
+
+# Compiling
+
+*  Create your ARM work directory `mkdir generated.arm; cd generated.arm`
+*  Build an ARM toolchain using `../configure --build-cross-tools arm ../../buildtools --target-board=rpi2`
+*  Build our loader using `jam -q haiku_loader_linux.ub`
+*  Build our initial ram disk using `jam -q haiku-floppyboot.tgz.ub`
+
+# Booting
+
+1. SOC finds bootcode.bin
+2. bootcode.bin runs start.elf
+3. start.elf reads config.txt and start u-boot
+4. u-boot.bin starts the Haiku loader
+5. Haiku loader boots Haiku kernel
+
+## config.txt Options
+
+    kernel=u-boot.bin
+
+## u-boot startup
+
+These will be condensed and automated long-term via uEnv.txt :-)
+
+* `fatload mmc 0 ${fdt_addr_r} bcm2836-rpi-2-b.dtb`
+* `fdt addr ${fdt_addr_r}`
+* `fatload mmc 0 ${ramdisk_addr_r} haiku-floppyboot.tgz.ub`
+* `fatload mmc 0 ${kernel_addr_r} haiku_loader_linux.ub`
+* `bootm ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}`
+
+# Additional Information
+
+* [Latest Raspberry Pi firmware](http://github.com/raspberrypi/firmware/tree/master/boot)
+* [config.txt options](http://www.elinux.org/RPiconfig)
+