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-rw-r--r--rtl/gfx/firmware/ctrl_map.h50
-rw-r--r--rtl/gfx/firmware/hostif.h55
-rw-r--r--rtl/gfx/firmware/main.c153
3 files changed, 194 insertions, 64 deletions
diff --git a/rtl/gfx/firmware/ctrl_map.h b/rtl/gfx/firmware/ctrl_map.h
new file mode 100644
index 0000000..c035c37
--- /dev/null
+++ b/rtl/gfx/firmware/ctrl_map.h
@@ -0,0 +1,50 @@
+#ifndef CTRL_MAP_H
+#define CTRL_MAP_H
+
+#define CTRL_OFFSET_MAGIC 0x00
+#define CTRL_OFFSET_HW_ID 0x01
+#define CTRL_OFFSET_FW_ID 0x02
+#define CTRL_OFFSET_HOSTIF_ID 0x03
+
+union ctrl_rdata
+{
+ unsigned word;
+
+ struct
+ {
+ unsigned value;
+ } magic;
+
+ struct
+ {
+ unsigned patch : 8;
+ unsigned minor : 8;
+ unsigned major : 8;
+ unsigned rsvd24 : 8;
+ } hw_id;
+
+ struct
+ {
+ unsigned build : 10;
+ unsigned day : 5;
+ unsigned month : 4;
+ unsigned year : 12;
+ unsigned rsvd31 : 1;
+ } fw_id;
+
+ struct
+ {
+ enum
+ {
+ HOSTIF_REV_BOOT,
+ HOSTIF_REV_V1,
+ } rev;
+ } hostif_id;
+};
+
+union ctrl_wdata
+{
+ unsigned word;
+};
+
+#endif
diff --git a/rtl/gfx/firmware/hostif.h b/rtl/gfx/firmware/hostif.h
new file mode 100644
index 0000000..f20467f
--- /dev/null
+++ b/rtl/gfx/firmware/hostif.h
@@ -0,0 +1,55 @@
+#ifndef HOSTIF_H
+#define HOSTIF_H
+
+struct hostif_ctrl
+{
+ unsigned arint : 1;
+ unsigned awint : 1;
+ unsigned rsvd2 : 6;
+ unsigned arvalid : 1;
+ unsigned awvalid : 1;
+ unsigned rdone : 1;
+ unsigned wvalid : 1;
+ unsigned bdone : 1;
+ unsigned rsvd13 : 19;
+};
+
+struct hostif_ar
+{
+ unsigned valid : 1;
+ unsigned rsvd1 : 1;
+ unsigned addr : 30;
+};
+
+struct hostif_aw
+{
+ unsigned valid : 1;
+ unsigned rsvd1 : 1;
+ unsigned addr : 30;
+};
+
+struct hostif_r
+{
+ unsigned data : 32;
+};
+
+struct hostif_w
+{
+ unsigned data : 32;
+};
+
+struct hostif_b
+{
+ unsigned valid : 1;
+ unsigned rsvd1 : 31;
+};
+
+#define HOSTIF_BASE 0x00300000
+#define HOSTIF_CTRL (*(volatile struct hostif_ctrl *)(HOSTIF_BASE + 0x00))
+#define HOSTIF_AR (*(volatile struct hostif_ar *) (HOSTIF_BASE + 0x04))
+#define HOSTIF_AW (*(volatile struct hostif_aw *) (HOSTIF_BASE + 0x08))
+#define HOSTIF_R (*(volatile struct hostif_r *) (HOSTIF_BASE + 0x0c))
+#define HOSTIF_W (*(volatile struct hostif_w *) (HOSTIF_BASE + 0x10))
+#define HOSTIF_B (*(volatile struct hostif_b *) (HOSTIF_BASE + 0x14))
+
+#endif
diff --git a/rtl/gfx/firmware/main.c b/rtl/gfx/firmware/main.c
index f75a9cb..efbf295 100644
--- a/rtl/gfx/firmware/main.c
+++ b/rtl/gfx/firmware/main.c
@@ -1,78 +1,103 @@
-struct hostif_ctrl
-{
- unsigned arint : 1;
- unsigned awint : 1;
- unsigned rsvd2 : 6;
- unsigned arvalid : 1;
- unsigned awvalid : 1;
- unsigned rdone : 1;
- unsigned wvalid : 1;
- unsigned bdone : 1;
- unsigned rsvd13 : 19;
-};
-
-struct hostif_ar
-{
- unsigned valid : 1;
- unsigned rsvd1 : 1;
- unsigned addr : 30;
-};
+#include "ctrl_map.h"
+#include "hostif.h"
-struct hostif_aw
-{
- unsigned valid : 1;
- unsigned rsvd1 : 1;
- unsigned addr : 30;
-};
+unsigned boot_magic;
+unsigned boot_hw_rev;
-struct hostif_r
+void host_read(struct hostif_ctrl *ctrl)
{
- unsigned data : 32;
-};
+ struct hostif_ar ar;
+ if (!(ar = HOSTIF_AR).valid)
+ return;
-struct hostif_w
-{
- unsigned data : 32;
-};
+ union ctrl_rdata rdata;
+ rdata.word = 0xffffffff;
-struct hostif_b0
-{
- unsigned valid : 1;
- unsigned rsvd1 : 31;
-};
-
-#define HOSTIF_BASE 0x00300000
-#define HOSTIF_CTRL (*(volatile struct hostif_ctrl *)(HOSTIF_BASE + 0x00))
-#define HOSTIF_AR (*(volatile struct hostif_ar *) (HOSTIF_BASE + 0x04))
-#define HOSTIF_AW (*(volatile struct hostif_aw *) (HOSTIF_BASE + 0x08))
-#define HOSTIF_R (*(volatile struct hostif_r *) (HOSTIF_BASE + 0x0c))
-#define HOSTIF_W (*(volatile struct hostif_w *) (HOSTIF_BASE + 0x10))
-#define HOSTIF_B (*(volatile struct hostif_b *) (HOSTIF_BASE + 0x14))
+ switch (ar.addr & 0xff) {
+ case CTRL_OFFSET_MAGIC:
+ rdata.magic.value = boot_magic;
+ break;
-int main(unsigned magic, unsigned hw_rev)
-{
- while (1) {
- struct hostif_ar ar;
- while (!(ar = HOSTIF_AR).valid);
+ case CTRL_OFFSET_HW_ID:
+ rdata.word = boot_hw_rev;
+ break;
+
+ case CTRL_OFFSET_FW_ID: {
+ rdata.fw_id.year = 0;
+ for (unsigned i = 7; i <= 10; ++i) {
+ rdata.fw_id.year *= 10;
+ rdata.fw_id.year += (unsigned)(__DATE__[i] - '0');
+ }
- switch (ar.addr & 3) {
- case 0b00:
- HOSTIF_R.data = magic;
- break;
+ rdata.fw_id.day = __DATE__[4] != ' ' ? (unsigned)(__DATE__[4] - '0') : 0;
+ rdata.fw_id.day += (unsigned)(__DATE__[5] - '0');
- case 0b01:
- HOSTIF_R.data = hw_rev;
- break;
+ const char months[12][3] = {
+ "Jan",
+ "Feb",
+ "Mar",
+ "Apr",
+ "May",
+ "Jun",
+ "Jul",
+ "Aug",
+ "Sep",
+ "Oct",
+ "Nov",
+ "Dec",
+ };
- case 0b10:
- HOSTIF_R.data = hw_rev;
- break;
+ rdata.fw_id.month = 0;
+ for (unsigned i = 0; i < sizeof months / sizeof months[0]; ++i)
+ if (__DATE__[0] == months[i][0]
+ && __DATE__[1] == months[i][1]
+ && __DATE__[2] == months[i][2]) {
+ rdata.fw_id.month = i + 1;
+ break;
+ }
- case 0b11:
- HOSTIF_R.data = 1;
- break;
+ rdata.fw_id.build = 1;
+ rdata.fw_id.rsvd31 = 0;
+ break;
}
- while (!HOSTIF_CTRL.rdone);
+ case CTRL_OFFSET_HOSTIF_ID:
+ rdata.hostif_id.rev = HOSTIF_REV_V1;
+ break;
+ }
+
+ HOSTIF_R.data = rdata.word;
+ while (!(*ctrl = HOSTIF_CTRL).rdone);
+}
+
+void host_write(struct hostif_ctrl *ctrl)
+{
+ struct hostif_aw aw;
+ if (!(aw = HOSTIF_AW).valid)
+ return;
+
+ union ctrl_wdata wdata;
+ wdata.word = HOSTIF_W.data;
+
+ switch (aw.addr & 0xff) {
+ }
+
+ HOSTIF_B = (struct hostif_b){ .valid = 1, .rsvd1 = 0 };
+ while (!(*ctrl = HOSTIF_CTRL).bdone);
+}
+
+int main(unsigned magic, unsigned hw_rev)
+{
+ boot_magic = magic;
+ boot_hw_rev = hw_rev;
+
+ while (1) {
+ struct hostif_ctrl ctrl = HOSTIF_CTRL;
+
+ if (ctrl.arvalid)
+ host_read(&ctrl);
+
+ if (ctrl.awvalid && ctrl.wvalid)
+ host_write(&ctrl);
}
}
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