diff --git a/arch/vc4/timer.c b/arch/vc4/timer.c
index 572f09083..0cfea8f64 100644
--- a/arch/vc4/timer.c
+++ b/arch/vc4/timer.c
@@ -10,11 +10,11 @@ static enum handler_return timer0_irq(void *arg);
 
 lk_bigtime_t current_time_hires(void) {
   //TODO, deal with rollover
-  return ( ((lk_bigtime_t)*REG32(ST_CHI)) << 32) | *REG32(ST_CLO);
+  return (( ((lk_bigtime_t)*REG32(ST_CHI)) << 32) | *REG32(ST_CLO)) / 1000;
 }
 
 lk_time_t current_time(void) {
-  return *REG32(ST_CLO);
+  return current_time_hires();
 }
 
 static platform_timer_callback timer_cb = 0;;
diff --git a/platform/bcm28xx/genet.c b/platform/bcm28xx/genet.c
new file mode 100644
index 000000000..a49ab780a
--- /dev/null
+++ b/platform/bcm28xx/genet.c
@@ -0,0 +1,27 @@
+// based on drivers/net/ethernet/broadcom/genet/bcmgenet.c from linux
+// for PHY control, look at the cmd_bits variable in drivers/net/ethernet/broadcom/genet/bcmmii.c
+
+#include <lk/reg.h>
+#include <stdio.h>
+#include <lk/console_cmd.h>
+#include <platform/bcm28xx.h>
+#include <lk/debug.h>
+
+static int cmd_genet_dump(int argc, const cmd_args *argv);
+
+STATIC_COMMAND_START
+STATIC_COMMAND("dump_genet", "print genet information", &cmd_genet_dump)
+STATIC_COMMAND_END(genet);
+
+#define SYS_REV_CTRL (GENET_BASE + 0x0)
+
+static int cmd_genet_dump(int argc, const cmd_args *argv) {
+  uint32_t reg = *REG32(SYS_REV_CTRL);
+  uint8_t major = (reg >> 24 & 0x0f);
+  if (major == 6) major = 5;
+  else if (major == 5) major = 4;
+  else if (major == 0) major = 1;
+
+  dprintf(INFO, "found GENET controller version %d\n", major);
+  return 0;
+}
diff --git a/platform/bcm28xx/include/platform/bcm28xx.h b/platform/bcm28xx/include/platform/bcm28xx.h
index f5a3a6082..1ec3a1dfc 100644
--- a/platform/bcm28xx/include/platform/bcm28xx.h
+++ b/platform/bcm28xx/include/platform/bcm28xx.h
@@ -41,6 +41,7 @@
 #define ARM_BASE                (BCM_PERIPH_BASE_VIRT + 0xB000)
 #define PM_BASE                 (BCM_PERIPH_BASE_VIRT + 0x100000)
 #define CM_BASE                 (BCM_PERIPH_BASE_VIRT + 0x101000)
+#define A2W_BASE                (BCM_PERIPH_BASE_VIRT + 0x102000)
 #define PCM_CLOCK_BASE          (BCM_PERIPH_BASE_VIRT + 0x101098)
 #define RNG_BASE                (BCM_PERIPH_BASE_VIRT + 0x104000)
 #define GPIO_BASE               (BCM_PERIPH_BASE_VIRT + 0x200000)
@@ -55,6 +56,7 @@
 #define SMI_BASE                (BCM_PERIPH_BASE_VIRT + 0x600000)
 #define BSC1_BASE               (BCM_PERIPH_BASE_VIRT + 0x804000)
 #define USB_BASE                (BCM_PERIPH_BASE_VIRT + 0x980000)
+#define GENET_BASE              (0x7d580000) // TODO, this is before the normal BCM_PERIPH_BASE_VIRT bank
 #define MCORE_BASE              (BCM_PERIPH_BASE_VIRT + 0x0000)
 
 #define ST_CS                   (ST_BASE + 0x0)
@@ -62,6 +64,8 @@
 #define ST_CHI                  (ST_BASE + 0x8)
 #define ST_C0                   (ST_BASE + 0xc)
 
+#define CM_VPUCTL               (CM_BASE + 0x008)
+#define CM_VPUDIV               (CM_BASE + 0x00c)
 #define CM_UARTCTL              (CM_BASE + 0xf0)
 #define CM_UARTDIV              (CM_BASE + 0xf4)
 
@@ -70,12 +74,14 @@
 #define IC0_SRC0                (IC0_BASE + 0x8)
 #define IC0_SRC1                (IC0_BASE + 0xc)
 #define IC0_VADDR               (IC0_BASE + 0x30)
+#define IC0_WAKEUP              (IC0_BASE + 0x34)
 
 #define IC1_C                   (IC1_BASE + 0x0)
 #define IC1_S                   (IC1_BASE + 0x4)
 #define IC1_SRC0                (IC1_BASE + 0x8)
 #define IC1_SRC1                (IC1_BASE + 0xc)
 #define IC1_VADDR               (IC1_BASE + 0x30)
+#define IC1_WAKEUP              (IC1_BASE + 0x34)
 
 #define PM_PASSWORD 0x5a000000
 #define PM_RSTC                 (PM_BASE + 0x1c)
@@ -83,6 +89,29 @@
 #define PM_WDOG                 (PM_BASE + 0x24)
 #define PM_WDOG_MASK            0x00000fff
 
+#define A2W_PASSWORD                                             0x5a000000
+#define A2W_PLLA_CTRL           (A2W_BASE + 0x100)
+#define A2W_PLLC_CTRL           (A2W_BASE + 0x120)
+#define A2W_PLLC_CTRL_PDIV_SET                             0x00007000
+#define A2W_PLLC_CTRL_NDIV_SET                             0x000003ff
+#define A2W_PLLC_CTRL_PDIV_LSB                             12
+#define A2W_PLLD_CTRL           (A2W_BASE + 0x140)
+#define A2W_PLLH_CTRL           (A2W_BASE + 0x160)
+#define A2W_PLLB_CTRL           (A2W_BASE + 0x1e0)
+#define A2W_PLLA_FRAC           (A2W_BASE + 0x200)
+#define A2W_PLLC_FRAC           (A2W_BASE + 0x220)
+#define A2W_PLLD_FRAC           (A2W_BASE + 0x240)
+#define A2W_PLLH_FRAC           (A2W_BASE + 0x260)
+#define A2W_PLLB_FRAC           (A2W_BASE + 0x2e0)
+#define A2W_PLLC_CORE1          (A2W_BASE + 0x420)
+#define A2W_PLLC_CORE0          (A2W_BASE + 0x620)
+#define A2W_PLLC_CORE0_DIV_SET                             0x000000ff
+#define A2W_PLLA_FRAC_MASK                                    0x000fffff
+#define A2W_PLLB_FRAC_MASK                                    0x000fffff
+#define A2W_PLLC_FRAC_MASK                                    0x000fffff
+#define A2W_PLLD_FRAC_MASK                                    0x000fffff
+#define A2W_PLLH_FRAC_MASK                                    0x000fffff
+
 #define ARMCTRL_BASE            (ARM_BASE + 0x000)
 #define ARMCTRL_INTC_BASE       (ARM_BASE + 0x200)
 #define ARMCTRL_TIMER0_1_BASE   (ARM_BASE + 0x400)
diff --git a/platform/bcm28xx/include/platform/bcm28xx/pll_read.h b/platform/bcm28xx/include/platform/bcm28xx/pll_read.h
index f7f95c9dc..3b28cd7fd 100644
--- a/platform/bcm28xx/include/platform/bcm28xx/pll_read.h
+++ b/platform/bcm28xx/include/platform/bcm28xx/pll_read.h
@@ -3,15 +3,15 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-uint32_t clk_get_input_freq(volatile uint32_t *ctlreg);
-uint32_t clk_get_freq(volatile uint32_t *divreg, volatile uint32_t *ctlreg);
-uint32_t get_vpu_per_freq();
-uint32_t get_uart_base_freq();
-uint32_t plla();
-uint32_t pllb();
-uint32_t pllc();
-uint32_t plld();
-uint32_t pllh();
+uint32_t clk_get_input_freq(uint32_t ctlreg);
+uint32_t clk_get_freq(uint32_t divreg, uint32_t ctlreg);
+uint32_t get_vpu_per_freq(void);
+uint32_t get_uart_base_freq(void);
+uint32_t plla(void);
+uint32_t pllb(void);
+uint32_t pllc(void);
+uint32_t plld(void);
+uint32_t pllh(void);
 extern uint32_t xtal_freq;
 #ifdef __cplusplus
 }
diff --git a/platform/bcm28xx/pll_read.c b/platform/bcm28xx/pll_read.c
index 795a107ba..156b009cf 100644
--- a/platform/bcm28xx/pll_read.c
+++ b/platform/bcm28xx/pll_read.c
@@ -1,21 +1,31 @@
-#include <hardware.h>
 #include <stdio.h>
 #include <platform/bcm28xx/pll_read.h>
+#include <platform/bcm28xx.h>
+#include <lk/reg.h>
+#include <lk/console_cmd.h>
+#include <lk/debug.h>
 
 uint32_t xtal_freq;
 
-uint32_t get_vpu_per_freq() {
-  return clk_get_freq(&CM_VPUDIV, &CM_VPUCTL);
+static int cmd_pll_dump(int argc, const cmd_args *argv);
+
+STATIC_COMMAND_START
+STATIC_COMMAND("dump_pll_state", "print all pll state", &cmd_pll_dump)
+STATIC_COMMAND_END(pll);
+
+uint32_t get_vpu_per_freq(void) {
+  return clk_get_freq(CM_VPUDIV, CM_VPUCTL);
 }
 
 uint32_t get_uart_base_freq() {
-  return clk_get_freq(&CM_UARTDIV, &CM_UARTCTL);
+  return clk_get_freq(CM_UARTDIV, CM_UARTCTL);
 }
 
 uint32_t compute_pll_freq(uint32_t ctrl, uint32_t frac) {
-  uint32_t ndiv = A2W_PLLC_CTRL & A2W_PLLC_CTRL_NDIV_SET;
-  uint32_t pdiv = (A2W_PLLC_CTRL & A2W_PLLC_CTRL_PDIV_SET) >> A2W_PLLC_CTRL_PDIV_LSB;
-  uint64_t mult1 = (ndiv << 20) | frac;
+  // FIXME, ignores the addr passed in
+  uint32_t ndiv = *REG32(ctrl) & A2W_PLLC_CTRL_NDIV_SET;
+  uint32_t pdiv = (*REG32(ctrl) & A2W_PLLC_CTRL_PDIV_SET) >> A2W_PLLC_CTRL_PDIV_LSB;
+  uint64_t mult1 = (ndiv << 20) | *REG32(frac);
   mult1 *= pdiv;
   // TODO, the optional /2 phase
   uint32_t freq = (xtal_freq * mult1) >> 20;
@@ -23,44 +33,44 @@ uint32_t compute_pll_freq(uint32_t ctrl, uint32_t frac) {
 }
 
 uint32_t plla() {
-  return compute_pll_freq(A2W_PLLA_CTRL, A2W_PLLA_FRAC & A2W_PLLA_FRAC_MASK);
+  return compute_pll_freq(*REG32(A2W_PLLA_CTRL), *REG32(A2W_PLLA_FRAC) & A2W_PLLA_FRAC_MASK);
 }
 
 uint32_t pllb() {
-  return compute_pll_freq(A2W_PLLB_CTRL, A2W_PLLB_FRAC & A2W_PLLB_FRAC_MASK);
+  return compute_pll_freq(*REG32(A2W_PLLB_CTRL), *REG32(A2W_PLLB_FRAC) & A2W_PLLB_FRAC_MASK);
 }
 
 uint32_t pllc() {
   //uint32_t ana1 = A2W_PLLC_ANA1;
-  uint32_t ctrl = A2W_PLLC_CTRL;
-  uint32_t frac = A2W_PLLC_FRAC & A2W_PLLC_FRAC_MASK;
+  uint32_t ctrl = *REG32(A2W_PLLC_CTRL);
+  uint32_t frac = *REG32(A2W_PLLC_FRAC) & A2W_PLLC_FRAC_MASK;
   return compute_pll_freq(ctrl, frac);
 }
 
 uint32_t plld() {
-  return compute_pll_freq(A2W_PLLD_CTRL, A2W_PLLD_FRAC & A2W_PLLD_FRAC_MASK);
+  return compute_pll_freq(*REG32(A2W_PLLD_CTRL), *REG32(A2W_PLLD_FRAC) & A2W_PLLD_FRAC_MASK);
 }
 
 uint32_t pllh() {
-  return compute_pll_freq(A2W_PLLH_CTRL, A2W_PLLH_FRAC & A2W_PLLH_FRAC_MASK);
+  return compute_pll_freq(*REG32(A2W_PLLH_CTRL), *REG32(A2W_PLLH_FRAC) & A2W_PLLH_FRAC_MASK);
 }
 
-uint32_t pllc_core0() {
-  uint32_t ctrl = A2W_PLLC_CORE0;
+uint32_t pllc_core0(void) {
+  uint32_t ctrl = *REG32(A2W_PLLC_CORE0);
   uint32_t div = ctrl & A2W_PLLC_CORE0_DIV_SET;
   uint32_t pllc_freq = pllc();
   return pllc_freq / div;
 }
 
-uint32_t clk_get_freq(volatile uint32_t *divreg, volatile uint32_t *ctlreg) {
-  uint32_t div = *divreg;
+uint32_t clk_get_freq(uint32_t divreg, uint32_t ctlreg) {
+  uint32_t div = *REG32(divreg);
   if (div == 0) return 0;
   uint64_t input_freq = clk_get_input_freq(ctlreg);
-  return ((input_freq << 12) / *divreg);
+  return ((input_freq << 12) / div);
 }
 
-uint32_t clk_get_input_freq(volatile uint32_t *ctlreg) {
-  uint32_t ctl = *ctlreg;
+uint32_t clk_get_input_freq(uint32_t ctlreg) {
+  uint32_t ctl = *REG32(ctlreg);
   switch (ctl & 0xf) {
   case 0: // GND clock source
     return 0;
@@ -85,3 +95,44 @@ uint32_t clk_get_input_freq(volatile uint32_t *ctlreg) {
     return 0;
   }
 }
+
+static uint32_t dump_pll_state(const char *prefix, uint32_t ctrl, uint32_t frac) {
+  uint32_t ctrl_val = *REG32(ctrl);
+  uint32_t frac_value = *REG32(frac);
+  dprintf(INFO, "A2W_%s_CTRL: 0x%x\n", prefix, ctrl_val);
+  dprintf(INFO, "A2W_%s_FRAC: 0x%x\n", prefix, frac_value);
+  uint32_t freq = compute_pll_freq(ctrl, frac);
+  dprintf(INFO, "%s freq: %u\n", prefix, freq);
+  return freq;
+}
+
+static void dump_plldiv_state(const char *prefix, uint32_t ctrl, uint32_t input) {
+  uint32_t ctrl_val = *REG32(ctrl);
+  dprintf(INFO, "\tA2W_%s: 0x%x\n", prefix, ctrl_val);
+  uint8_t div = ctrl_val & 0xff;
+  if (div == 0) return;
+  uint32_t freq = input / div;
+  dprintf(INFO, "\t%s freq: %u\n", prefix, freq);
+}
+
+static void dump_plldiv2_state(const char *prefix, uint32_t ctrl, uint32_t div) {
+  uint32_t ctrl_val = *REG32(ctrl);
+  uint32_t div_val = *REG32(div);
+  dprintf(INFO, "CM_%sCTL: 0x%x\n", prefix, ctrl_val);
+  dprintf(INFO, "CM_%sDIV: 0x%x\n", prefix, div_val);
+}
+
+static int cmd_pll_dump(int argc, const cmd_args *argv) {
+  dump_pll_state("PLLA", A2W_PLLA_CTRL, A2W_PLLA_FRAC);
+  dump_pll_state("PLLB", A2W_PLLB_CTRL, A2W_PLLB_FRAC);
+  uint32_t pllc_freq = dump_pll_state("PLLC", A2W_PLLC_CTRL, A2W_PLLC_FRAC);
+  if (pllc_freq > 0) {
+    dump_plldiv_state("PLLC_CORE0", A2W_PLLC_CORE0, pllc_freq);
+    dump_plldiv_state("PLLC_CORE1", A2W_PLLC_CORE1, pllc_freq);
+  }
+  dump_pll_state("PLLD", A2W_PLLD_CTRL, A2W_PLLD_FRAC);
+  dump_pll_state("PLLH", A2W_PLLH_CTRL, A2W_PLLH_FRAC);
+
+  dump_plldiv2_state("VPU", CM_VPUCTL, CM_VPUDIV);
+  return 0;
+}
diff --git a/platform/bcm28xx/rules.mk b/platform/bcm28xx/rules.mk
index 8fd2216f5..5948f5de4 100644
--- a/platform/bcm28xx/rules.mk
+++ b/platform/bcm28xx/rules.mk
@@ -5,12 +5,28 @@ MODULE := $(LOCAL_DIR)
 WITH_SMP := 1
 #LK_HEAP_IMPLEMENTATION ?= dlmalloc
 
-ifeq ($(ARCJ),arm)
-MODULE_DEPS := \
+# 1st pass to set arch
+ifeq ($(TARGET),rpi2)
+  ARCH := arm
+  ARM_CPU := cortex-a7
+  GLOBAL_DEFINES += CRYSTAL=19200000
+else ifeq ($(TARGET),rpi3)
+  ARCH := arm64
+  ARM_CPU := cortex-a53
+  GLOBAL_DEFINES += CRYSTAL=19200000
+else ifeq ($(TARGET),rpi4-vpu)
+  ARCH ?= vc4
+  GLOBAL_DEFINES += CRYSTAL=54000000
+endif
+
+
+ifeq ($(ARCH),arm)
+MODULE_DEPS += \
 	dev/timer/arm_generic \
 	lib/cbuf
-MODULE_SRCS +=
+MODULE_SRCS += \
 	$(LOCAL_DIR)/mailbox.c \
+	$(LOCAL_DIR)/intc.c \
 
 endif
 
@@ -24,7 +40,7 @@ endif
 MODULE_SRCS += \
 	$(LOCAL_DIR)/gpio.c \
 	$(LOCAL_DIR)/platform.c \
-	#$(LOCAL_DIR)/intc.c \
+	$(LOCAL_DIR)/pll_read.c \
 
 
 MEMBASE := 0x00000000
@@ -36,8 +52,6 @@ LINKER_SCRIPT += \
 	$(BUILDDIR)/system-onesegment.ld
 
 ifeq ($(TARGET),rpi2)
-ARCH := arm
-ARM_CPU := cortex-a7
 # put our kernel at 0x80000000
 KERNEL_BASE = 0x80000000
 KERNEL_LOAD_OFFSET := 0x00008000
@@ -50,8 +64,6 @@ MODULE_SRCS += \
 	$(LOCAL_DIR)/uart.c
 
 else ifeq ($(TARGET),rpi3)
-ARCH := arm64
-ARM_CPU := cortex-a53
 
 KERNEL_LOAD_OFFSET := 0x00080000
 MEMSIZE ?= 0x40000000 # 1GB
@@ -70,18 +82,16 @@ MODULE_DEPS += \
 	    app/tests \
 	    lib/fdt
 else ifeq ($(TARGET),rpi4-vpu)
-ARCH ?= vc4
 MEMSIZE ?= 0x1400000 # 20MB
 MEMBASE ?= 0
 GLOBAL_DEFINES += \
     BCM2XXX_VPU=1 SMP_MAX_CPUS=1 \
     MEMSIZE=$(MEMSIZE) \
     MEMBASE=$(MEMBASE) \
-    CRYSTAL=54000000 \
 
 MODULE_SRCS += \
 	$(LOCAL_DIR)/uart.c \
-	$(LOCAL_DIR)/pll_read.c \
+	$(LOCAL_DIR)/genet.c \
 
 endif
 
diff --git a/platform/bcm28xx/uart.c b/platform/bcm28xx/uart.c
index 9ff209fb3..6013a39d8 100644
--- a/platform/bcm28xx/uart.c
+++ b/platform/bcm28xx/uart.c
@@ -102,7 +102,6 @@ void uart_init(void) {
         // assumes interrupts are contiguous
         register_int_handler(INTERRUPT_VC_UART + i, &uart_irq, (void *)i);
         uint32_t divisor = calculate_baud_divisor(115200);
-        dprintf(INFO, "changing divisor to %d\n", divisor);
 
         uart_flush(i);