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hw/arm/mps2-tz: Support running APB peripherals on different clock

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The AN547 runs the APB peripherals outside the SSE-300 on a different
and slightly slower clock than it runs the SSE-300 with.  Support
making the APB peripheral clock frequency board-specific.  (For our
implementation only the UARTs actually take a clock.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210219144617.4782-41-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2021-02-19 14:46:13 +00:00
parent 6ac8081894
commit ad28ca7e9f
1 changed files with 5 additions and 1 deletions
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6
hw/arm/mps2-tz.c
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@ -106,6 +106,7 @@ struct MPS2TZMachineClass {
MPS2TZFPGAType fpga_type;
uint32_t scc_id;
uint32_t sysclk_frq; /* Main SYSCLK frequency in Hz */
uint32_t apb_periph_frq; /* APB peripheral frequency in Hz */
uint32_t len_oscclk;
const uint32_t *oscclk;
uint32_t fpgaio_num_leds; /* Number of LEDs in FPGAIO LED0 register */
@ -379,7 +380,7 @@ static MemoryRegion *make_uart(MPS2TZMachineState *mms, void *opaque,
object_initialize_child(OBJECT(mms), name, uart, TYPE_CMSDK_APB_UART);
qdev_prop_set_chr(DEVICE(uart), "chardev", serial_hd(i));
qdev_prop_set_uint32(DEVICE(uart), "pclk-frq", mmc->sysclk_frq);
qdev_prop_set_uint32(DEVICE(uart), "pclk-frq", mmc->apb_periph_frq);
sysbus_realize(SYS_BUS_DEVICE(uart), &error_fatal);
s = SYS_BUS_DEVICE(uart);
sysbus_connect_irq(s, 0, get_sse_irq_in(mms, irqs[0]));
@ -1044,6 +1045,7 @@ static void mps2tz_an505_class_init(ObjectClass *oc, void *data)
mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m33");
mmc->scc_id = 0x41045050;
mmc->sysclk_frq = 20 * 1000 * 1000; /* 20MHz */
mmc->apb_periph_frq = mmc->sysclk_frq;
mmc->oscclk = an505_oscclk;
mmc->len_oscclk = ARRAY_SIZE(an505_oscclk);
mmc->fpgaio_num_leds = 2;
@ -1069,6 +1071,7 @@ static void mps2tz_an521_class_init(ObjectClass *oc, void *data)
mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m33");
mmc->scc_id = 0x41045210;
mmc->sysclk_frq = 20 * 1000 * 1000; /* 20MHz */
mmc->apb_periph_frq = mmc->sysclk_frq;
mmc->oscclk = an505_oscclk; /* AN521 is the same as AN505 here */
mmc->len_oscclk = ARRAY_SIZE(an505_oscclk);
mmc->fpgaio_num_leds = 2;
@ -1094,6 +1097,7 @@ static void mps3tz_an524_class_init(ObjectClass *oc, void *data)
mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m33");
mmc->scc_id = 0x41045240;
mmc->sysclk_frq = 32 * 1000 * 1000; /* 32MHz */
mmc->apb_periph_frq = mmc->sysclk_frq;
mmc->oscclk = an524_oscclk;
mmc->len_oscclk = ARRAY_SIZE(an524_oscclk);
mmc->fpgaio_num_leds = 10;