diff options
Diffstat (limited to 'ich_descriptors.c')
-rw-r--r-- | ich_descriptors.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/ich_descriptors.c b/ich_descriptors.c index da1326e..125077c 100644 --- a/ich_descriptors.c +++ b/ich_descriptors.c @@ -213,6 +213,34 @@ void prettyprint_ich_descriptor_master(const struct ich_desc_master *mstr) msg_pdbg2("\n"); } +/** Returns the integer representation of the component density with index +idx in bytes or 0 if a correct size can not be determined. */ +int getFCBA_component_density(const struct ich_descriptors *desc, uint8_t idx) +{ + uint8_t size_enc; + + switch(idx) { + case 0: + size_enc = desc->component.comp1_density; + break; + case 1: + if (desc->content.NC == 0) + return 0; + size_enc = desc->component.comp2_density; + break; + default: + msg_perr("Only ICH SPI component index 0 or 1 are supported " + "yet.\n"); + return 0; + } + if (size_enc > 5) { + msg_perr("Density of ICH SPI component with index %d is " + "invalid. Encoded density is 0x%x.\n", idx, size_enc); + return 0; + } + return (1 << (19 + size_enc)); +} + static uint32_t read_descriptor_reg(uint8_t section, uint16_t offset, void *spibar) { uint32_t control = 0; |