XMM6180

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Revision as of 01:11, 14 February 2011 by Grisolp (talk | contribs) (Modem)
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This is the baseband platform used in the iPhone 4 and build by Infineon. It uses the X-Gold 618.

The firmware is based on ThreadX, a realtime OS.

Firmware files are signed for a specific device by Apple during the restore process. As a result, the baseband will allow downgrades provided that Apple is still signing the firmware.

Main Features (according to Datasheet)

Modem

  • HSDPA/HSUPA 7.2Mbps/2.9Mbps (Apple confirmed upload was 5.8mbps)
  • WCDMA: 384kbps DL/UL
  • EDGE up to MSC33 with SAIC
  • Speech: NB-AMR, WB-AMR

CPU

  • ARM1176 @ 416MHz

Memory

  • LPDDR1-SDRAM
  • NOR & NAND Flash
  • eSD/eMMC

Connectivity and Interfaces

  • Digital RF interface V3.09
  • High speed SIM card interface
  • USB 2.0 HS
  • 3 x USIF; 2xI2S; 2xI2C
  • 3 x SD/MMC card interface

Memory Map

  • 0x40FE0000-0x41000000 -- Bootloader(0x2)
  • 0x40040000-0x40800000 -- Main Code(0x4)
  • 0x40800000-0x41000000 -- AENEAS(0x5)
  • 0x60000000-0x60200000 -- EBL(0x3)
  • 0x00080000-0x00A00000 -- PSI_RAM(0x1)
  • 0x40800000-0x40A00000 -- CDS(0x4)

Although the crash dump would seem to contradict this, code running from 0x60xxxxxx

Flash Files in 01.59.00

  • psi_ram.fls
    • RAM bootloader?
    • 0x80000 size 0xFF00
  • psi_flash.fls
    • Flash bootloader
    • 0x40FE0000 size 0x8000
  • stack.fls(ICE3.fls)
    • Main baseband code
    • 0x40040000 size 0x6F7E5C
    • start vector @ 0x40040408
  • ebl.fls
    • Flashing loader??
    • 0x60000000 size 0xDFB0

Known Firmware Versions

1.59.00 4.0 (Build 8A293), 4.0.1 (Build 8A306), and 4.0.2 (Build 8A400)
2.07.01 4.1 beta 1 (Build 8B5080c)
2.10.04 4.1 (Build 8B117)
3.08.00 4.2 beta 1 (Build 8C5091e)
3.09.00 4.2 beta 2 (Build 8C5101c)
3.10.01 4.2.1 (Build 8C148)
4.08.00 4.3 beta 1 (Build 8F5148b)
4.09.00 4.3 beta 2 (Build 8F5153d)
4.10.01 4.3 beta 3 (Build 8F5166b)