Re: [patch 1/6] ps3: Preallocate bootmem memory for the PS3 FLASH
From: Geert Uytterhoeven <hidden>
Date: 2007-06-19 11:36:11
On Mon, 18 Jun 2007, Milton Miller wrote:
On Fri Jun 15 23:32:41 EST 2007, Geert Uytterhoeven wrote:quoted
On Fri, 15 Jun 2007, Benjamin Herrenschmidt wrote:quoted
On Fri, 2007-06-15 at 13:39 +0200, Geert Uytterhoeven wrote:quoted
Preallocate 256 KiB of bootmem memory for the PS3 FLASH ROM storage driver.I still very much dislike the #ifdef xxx_MODULE in main kernel code.Me too, but there's no other reliable way to allocate it after boot up...quoted
At the end of the day, is it realistic to ever use a PS3 without the storage driver ? I would suggest just allocating those unconditionally.If you don't plan to (a) boot into GameOS or (b) update the kboot kernel, then the answer is: yes, you can live without the FLASH ROM driver, and save one promille of RAM.In that case, why not make it an early_param, and only change the default based on the config varables? It sounds like I might want to reclaim this memory even if I compiled in the driver.
Like `ps3flash=off' on the kernel command line to disable it? Can be done.
Statement (a) is because one has to write the flag to say don't' boot OtherOS to go back to GameOS (or reset all defaults) I presume.
Indeed, there's a flag in the FLASH ROM to choose between booting GameOS and OtherOS (e.g. Linux). With kind regards, Geert Uytterhoeven Software Architect Sony Network and Software Technology Center Europe The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium Phone: +32 (0)2 700 8453 Fax: +32 (0)2 700 8622 E-mail: Geert.Uytterhoeven@sonycom.com Internet: http://www.sony-europe.com/ Sony Network and Software Technology Center Europe A division of Sony Service Centre (Europe) N.V. Registered office: Technologielaan 7 · B-1840 Londerzeel · Belgium VAT BE 0413.825.160 · RPR Brussels Fortis Bank Zaventem · Swift GEBABEBB08A · IBAN BE39001382358619