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pcv_mariko: Add (partial) mc_emem_arb_misc0 calculation

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Lightos1
2026-07-12 15:40:35 +02:00
parent e6178da315
commit 4c52b1418d
1 changed files with 16 additions and 2 deletions
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18
Source/Atmosphere/stratosphere/loader/source/oc/pcv/pcv_mariko.cpp
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@@ -365,6 +365,8 @@ namespace ams::ldr::hoc::pcv::mariko {
#define GET_CYCLE_CEIL(PARAM) u32(CEIL(double(PARAM) / tCK_avg))
/* EMC timings. */
/* Ram power down */
/* B31: DRAM_CLKSTOP_PD */
/* B30: DRAM_CLKSTOP_SR */
@@ -446,6 +448,7 @@ namespace ams::ldr::hoc::pcv::mariko {
WRITE_PARAM_ALL_REG(table, emc_cmd_brlshft_2, 0x24);
WRITE_PARAM_ALL_REG(table, emc_cmd_brlshft_3, 0x24);
/* MC timings. */
/* This needs some clean up. */
constexpr double MC_ARB_DIV = 4.0;
constexpr u32 MC_ARB_SFA = 2;
@@ -488,7 +491,18 @@ namespace ams::ldr::hoc::pcv::mariko {
da_covers |= (w_cover << 16);
table->burst_mc_regs.mc_emem_arb_da_covers = da_covers;
table->burst_mc_regs.mc_emem_arb_misc0 = (table->burst_mc_regs.mc_emem_arb_misc0 & 0xFFE08000) | (table->burst_mc_regs.mc_emem_arb_timing_rc + 1);
constexpr u32 AtomsPerDvfsPulse = 0x7;
constexpr u32 McEmcSameFreq = 0x0;
/* On certain frequencies (2966, 3100, 3133 and 3200 MHz), ExpiringSoonSlackThreshold has a value of 0x12. */
/* But 0x13 is good enough for now. */
constexpr u32 ExpiringSoonSlackThreshold = 0x13;
const u32 PriorityInversionIsoThreshold = GET_CYCLE_CEIL(7.5);
constexpr u32 EmcReqB2bXfer = 0x0;
const u32 PriorityInversionThreshold = GET_CYCLE_CEIL(22.5);
const u32 Bc2aaHoldoffThreshold = table->burst_mc_regs.mc_emem_arb_timing_rc + 1;
const u32 mc_emem_arb_misc0 = (AtomsPerDvfsPulse << 28) | (McEmcSameFreq << 27) | (ExpiringSoonSlackThreshold << 21) | (PriorityInversionIsoThreshold << 16) | (EmcReqB2bXfer << 15) | (PriorityInversionThreshold << 8) | (Bc2aaHoldoffThreshold << 0);
table->burst_mc_regs.mc_emem_arb_misc0 = mc_emem_arb_misc0;
table->la_scale_regs.mc_mll_mpcorer_ptsa_rate = 0x115;
@@ -531,7 +545,7 @@ namespace ams::ldr::hoc::pcv::mariko {
table->la_scale_regs.mc_latency_allowance_vi2_0 = (table->la_scale_regs.mc_latency_allowance_vi2_0 & Mask2) | allowance1;
table->dram_timings.t_rp = tRP_values[0];
const u32 tRFCabStock = tRFC_values[0] * 2;
const u32 tRFCabStock = tRFC_values[0] * 2;
table->dram_timings.t_rfc = tRFCabStock;
table->dram_timings.rl = RL;