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Fix wrong density encoding on Intel Silvermont

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Silvermont (Bay Trail, Rangeley, Avoton) seems to still use the old
density encoding with 3 bits per chip. Documentation is unavailable
(held concealed by Intel) but thanks to the efforts of Tai-Hong
(Type) Wu the layout is clear now. This patch is based on his one
but solves the issue differently thus reducing the code complexity.

Corresponding to flashrom svn r1861.

Signed-off-by: Tai-Hong Wu <thwu@lunartoday.com>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
This commit is contained in:
Tai-Hong Wu
2015-01-05 23:00:14 +00:00
committed by Stefan Tauner
parent 80e6471588
commit 60dead4aee
2 changed files with 26 additions and 30 deletions
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18
ich_descriptors.h
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@ -123,23 +123,19 @@ struct ich_desc_component {
freq_fastread :3,
freq_write :3,
freq_read_id :3,
:2;
} common;
dual_output :1, /* new since Cougar Point/6 */
:1;
} modes;
struct {
uint32_t comp1_density :3,
comp2_density :3,
:11,
:13,
:2;
} old;
:26;
} dens_old;
struct {
uint32_t comp1_density :4, /* new since Lynx Point/8 */
comp2_density :4,
:9,
:13,
dual_output :1, /* new since Cougar Point/6 */
:1;
} new;
:24;
} dens_new;
};
union { /* 0x04 */
uint32_t FLILL; /* Flash Invalid Instructions Register */