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EC20 Booting » History » Version 1

zecke, 12/23/2016 11:46 AM

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h1. EC20 Booting
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How does the system boot? What is started first? There are various partitions and "boot" and "aboot" seem to be multiple
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bootloaders. When flashing one can activate the android bootloader either via the AT+QFASTBOOT AT command or it seems
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like a special sequence is applied (on diag?). Given the names "boot" and "aboot" it seems that booting to Linux is not done
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directly by "boot".
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Analysis needs to be done..
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<pre>
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probably not used. files
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ENPRG9x15.hex
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NPRG9x15.hex
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AT+QDL probably not used too.. many ways to start reflash..
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</pre>
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<pre>
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Partitions:
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[    1.123851] 0x0000050c0000-0x000005b00000 : "boot" 
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[    1.130260] 0x000000140000-0x0000004a0000 : "sbl2" 
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[    1.135479] 0x0000004a0000-0x000000800000 : "rpm" 
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[    1.140485] 0x000000800000-0x000000d80000 : "efs2" 
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[    1.145643] 0x000000d80000-0x0000012e0000 : "dsp1" 
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[    1.150770] 0x0000012e0000-0x000001d20000 : "dsp3" 
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[    1.156020] 0x000001d20000-0x000004fe0000 : "dsp2" 
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[    1.161147] 0x000004fe0000-0x0000050c0000 : "aboot" 
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</pre>
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