feat: Add support for SKY130 OpenRAM SRAM integration

- Introduced  to handle the preparation of the SKY130 OpenRAM SRAM views.
- Updated  to download and prepare the SRAM archive during PDK setup.
- Enhanced OpenSTA and Yosys configurations to accommodate SRAM macro integration.
- Added Verilog simulation models for GF180 and SKY130 SRAM macros.
- Implemented tests for SRAM setup and validation, ensuring correct integration and functionality.
- Updated various Makefiles and scripts to support SRAM size and macro configurations.

configs/README.md

@@ -18,9 +18,15 @@ Start builds from a committed profile rather than setting an unreviewed mix of
 variables on the command line.
 
 `SRAM_SIZE_KIB` selects 4, 16, 32, 64, or 128 KiB of on-chip SRAM and is part
-of the build variant key. Every committed profile sets 128 explicitly;
-profiles with `HAVE_SRAM_IF=NO` keep a reproducible capacity selection while
-the hardware capability reports the memory absent.
+of the build variant key. IHP130, GF180, and SKY130 CI profiles select eight
+4 KiB banks for 32 KiB total and enable both the interface and technology
+macro. ICS55 profiles keep the memory absent. IHP130 benchmark and CoreMark
+profiles explicitly retain 128 KiB for their fixed workload placement and
+SRAM-resident image.
+
+`HAVE_SRAM_MACRO=YES` requires `HAVE_SRAM_IF=YES`. The generic manual defaults
+enable 32 KiB for IHP130, GF180, and SKY130 and keep ICS55 disabled; committed
+profiles remain the supported reproducible entry points.
 
 `PDK_BEHAV=YES` selects technology-wrapper functional models for behavioral
 simulation. It is a simulation-only setting, participates in the build variant

configs/ci/gf180.mk

@@ -1,9 +1,9 @@
 SOC               := MINI
 PDK               := GF180
 HAVE_PLL          := NO
-HAVE_SRAM_IF      := NO
-HAVE_SRAM_MACRO   := NO
-SRAM_SIZE_KIB     := 128
+HAVE_SRAM_IF      := YES
+HAVE_SRAM_MACRO   := YES
+SRAM_SIZE_KIB     := 32
 HAVE_SVA          := NO
 EXT_CLK_HZ        := 72000000
 AUD_CLK_HZ        := 18432000

configs/ci/ihp130-debug.mk

@@ -3,7 +3,7 @@ PDK               := IHP130
 HAVE_PLL          := NO
 HAVE_SRAM_IF      := YES
 HAVE_SRAM_MACRO   := YES
-SRAM_SIZE_KIB     := 128
+SRAM_SIZE_KIB     := 32
 PDK_BEHAV         := YES
 HAVE_SVA          := NO
 EXT_CLK_HZ        := 72000000

configs/ci/ihp130-shell.mk

@@ -1,9 +1,9 @@
 SOC               := MINI
 PDK               := IHP130
 HAVE_PLL          := NO
-HAVE_SRAM_IF      := NO
-HAVE_SRAM_MACRO   := NO
-SRAM_SIZE_KIB     := 128
+HAVE_SRAM_IF      := YES
+HAVE_SRAM_MACRO   := YES
+SRAM_SIZE_KIB     := 32
 HAVE_SVA          := NO
 EXT_CLK_HZ        := 72000000
 AUD_CLK_HZ        := 18432000

configs/ci/ihp130-xpi-flash-loader.mk

@@ -3,7 +3,7 @@ PDK               := IHP130
 HAVE_PLL          := NO
 HAVE_SRAM_IF      := YES
 HAVE_SRAM_MACRO   := YES
-SRAM_SIZE_KIB     := 128
+SRAM_SIZE_KIB     := 32
 PDK_BEHAV         := YES
 HAVE_SVA          := NO
 EXT_CLK_HZ        := 72000000

configs/ci/ihp130.mk

@@ -1,9 +1,9 @@
 SOC               := MINI
 PDK               := IHP130
 HAVE_PLL          := NO
-HAVE_SRAM_IF      := NO
-HAVE_SRAM_MACRO   := NO
-SRAM_SIZE_KIB     := 128
+HAVE_SRAM_IF      := YES
+HAVE_SRAM_MACRO   := YES
+SRAM_SIZE_KIB     := 32
 HAVE_SVA          := NO
 EXT_CLK_HZ        := 72000000
 AUD_CLK_HZ        := 18432000

configs/ci/sky130.mk

@@ -1,9 +1,9 @@
 SOC               := MINI
 PDK               := SKY130
 HAVE_PLL          := NO
-HAVE_SRAM_IF      := NO
-HAVE_SRAM_MACRO   := NO
-SRAM_SIZE_KIB     := 128
+HAVE_SRAM_IF      := YES
+HAVE_SRAM_MACRO   := YES
+SRAM_SIZE_KIB     := 32
 HAVE_SVA          := NO
 EXT_CLK_HZ        := 72000000
 AUD_CLK_HZ        := 18432000