socfpga: map uart into virtual address space so that early_printk() works
Early printk code needs UART to be mapped early during boot. early_printk() is left there during the start-up; it is useful as our emulators are fairly slow. Signed-off-by: Pavel Machek <pavel@denx.de> Acked-by: Dinh Nguyen <dinguyen@altera.com> [olof: removed redundant newlines] Signed-off-by: Olof Johansson <olof@lixom.net>
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@ -37,6 +37,13 @@ static struct map_desc scu_io_desc __initdata = {
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.type = MT_DEVICE,
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.type = MT_DEVICE,
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};
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};
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static struct map_desc uart_io_desc __initdata = {
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.virtual = 0xfec02000,
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.pfn = __phys_to_pfn(0xffc02000),
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.length = SZ_8K,
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.type = MT_DEVICE,
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};
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static void __init socfpga_scu_map_io(void)
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static void __init socfpga_scu_map_io(void)
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{
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{
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unsigned long base;
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unsigned long base;
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@ -51,6 +58,8 @@ static void __init socfpga_scu_map_io(void)
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static void __init socfpga_map_io(void)
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static void __init socfpga_map_io(void)
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{
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{
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socfpga_scu_map_io();
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socfpga_scu_map_io();
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iotable_init(&uart_io_desc, 1);
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early_printk("Early printk initialized\n");
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}
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}
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const static struct of_device_id irq_match[] = {
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const static struct of_device_id irq_match[] = {
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