From aed998aa34b22e818b2cd58ca7f2246716f2c3a6 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 17 May 2017 03:25:42 -0600 Subject: Convert CONFIG_LZMA to Kconfig This converts the following to Kconfig: CONFIG_LZMA Signed-off-by: Simon Glass --- README | 23 ----------------------- 1 file changed, 23 deletions(-) (limited to 'README') diff --git a/README b/README index 98a51dcb80..9d351ec5ad 100644 --- a/README +++ b/README @@ -1723,29 +1723,6 @@ The following options need to be configured: the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should be at least 4MB. - CONFIG_LZMA - - If this option is set, support for lzma compressed - images is included. - - Note: The LZMA algorithm adds between 2 and 4KB of code and it - requires an amount of dynamic memory that is given by the - formula: - - (1846 + 768 << (lc + lp)) * sizeof(uint16) - - Where lc and lp stand for, respectively, Literal context bits - and Literal pos bits. - - This value is upper-bounded by 14MB in the worst case. Anyway, - for a ~4MB large kernel image, we have lc=3 and lp=0 for a - total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is - a very small buffer. - - Use the lzmainfo tool to determinate the lc and lp values and - then calculate the amount of needed dynamic memory (ensuring - the appropriate CONFIG_SYS_MALLOC_LEN value). - CONFIG_LZO If this option is set, support for LZO compressed images -- cgit v1.2.3