diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2020-10-13 21:45:45 +0200 |
|---|---|---|
| committer | Angel Pons <th3fanbus@gmail.com> | 2020-10-23 18:13:17 +0000 |
| commit | 82654b3fe64e46be31cec206798c80a7616e9ee9 (patch) | |
| tree | 0946b616cfa4142e21fa04eee18b1f35fa2ca3d3 /src/northbridge/intel | |
| parent | a0cb713ce2caa065ae9d2de71f02d4cb2fd4914d (diff) | |
nb/intel/haswell/raminit.c: Clean up local variables
Remove unnecessary arrays, use unsigned types for non-negative values
and constify where possible. Also define NUM_CHANNELS and NUM_SLOTS.
Change-Id: Ie4eb79d9c48194538c0ee41dca48ea32798ad8c6
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46363
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/northbridge/intel')
| -rw-r--r-- | src/northbridge/intel/haswell/raminit.c | 25 | ||||
| -rw-r--r-- | src/northbridge/intel/haswell/registers/mchbar.h | 4 |
2 files changed, 13 insertions, 16 deletions
diff --git a/src/northbridge/intel/haswell/raminit.c b/src/northbridge/intel/haswell/raminit.c index 83654fe58f..63d70f792f 100644 --- a/src/northbridge/intel/haswell/raminit.c +++ b/src/northbridge/intel/haswell/raminit.c @@ -61,12 +61,9 @@ static const char *const ecc_decoder[] = { /* Print out the memory controller configuration, as per the values in its registers. */ static void report_memory_config(void) { - u32 addr_decoder_common, addr_decode_chan[2]; int i; - addr_decoder_common = MCHBAR32(MAD_CHNL); - addr_decode_chan[0] = MCHBAR32(MAD_DIMM(0)); - addr_decode_chan[1] = MCHBAR32(MAD_DIMM(1)); + const u32 addr_decoder_common = MCHBAR32(MAD_CHNL); printk(BIOS_DEBUG, "memcfg DDR3 clock %d MHz\n", (MCHBAR32(MC_BIOS_DATA) * 13333 * 2 + 50) / 100); @@ -76,8 +73,8 @@ static void report_memory_config(void) (addr_decoder_common >> 2) & 3, (addr_decoder_common >> 4) & 3); - for (i = 0; i < ARRAY_SIZE(addr_decode_chan); i++) { - u32 ch_conf = addr_decode_chan[i]; + for (i = 0; i < NUM_CHANNELS; i++) { + const u32 ch_conf = MCHBAR32(MAD_DIMM(i)); printk(BIOS_DEBUG, "memcfg channel[%d] config (%8.8x):\n", i, ch_conf); printk(BIOS_DEBUG, " ECC %s\n", ecc_decoder[(ch_conf >> 24) & 3]); @@ -214,10 +211,9 @@ static uint32_t nb_max_chan_capacity_mib(const uint32_t capid0_a) void setup_sdram_meminfo(struct pei_data *pei_data) { - u32 addr_decode_ch[2]; struct memory_info *mem_info; struct dimm_info *dimm; - int ddr_frequency, dimm_size, ch, d_num; + int ch, d_num; int dimm_cnt = 0; mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(struct memory_info)); @@ -226,16 +222,13 @@ void setup_sdram_meminfo(struct pei_data *pei_data) memset(mem_info, 0, sizeof(struct memory_info)); - addr_decode_ch[0] = MCHBAR32(MAD_DIMM(0)); - addr_decode_ch[1] = MCHBAR32(MAD_DIMM(1)); + const u32 ddr_frequency = (MCHBAR32(MC_BIOS_DATA) * 13333 * 2 + 50) / 100; - ddr_frequency = (MCHBAR32(MC_BIOS_DATA) * 13333 * 2 + 50) / 100; - - for (ch = 0; ch < ARRAY_SIZE(addr_decode_ch); ch++) { - u32 ch_conf = addr_decode_ch[ch]; + for (ch = 0; ch < NUM_CHANNELS; ch++) { + const u32 ch_conf = MCHBAR32(MAD_DIMM(ch)); /* DIMMs A/B */ - for (d_num = 0; d_num < 2; d_num++) { - dimm_size = ((ch_conf >> (d_num * 8)) & 0xff) * 256; + for (d_num = 0; d_num < NUM_SLOTS; d_num++) { + const u32 dimm_size = ((ch_conf >> (d_num * 8)) & 0xff) * 256; if (dimm_size) { dimm = &mem_info->dimm[dimm_cnt]; dimm->dimm_size = dimm_size; diff --git a/src/northbridge/intel/haswell/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h index 60e16e0b98..96d08bfc22 100644 --- a/src/northbridge/intel/haswell/registers/mchbar.h +++ b/src/northbridge/intel/haswell/registers/mchbar.h @@ -3,6 +3,10 @@ #ifndef __HASWELL_REGISTERS_MCHBAR_H__ #define __HASWELL_REGISTERS_MCHBAR_H__ +/* Memory controller characteristics */ +#define NUM_CHANNELS 2 +#define NUM_SLOTS 2 + /* Register definitions */ #define MAD_CHNL 0x5000 /* Address Decoder Channel Configuration */ #define MAD_DIMM(ch) (0x5004 + (ch) * 4) |